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Added Chapter 10
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25
Ch10/Code01_tw/Code1001.cabal
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25
Ch10/Code01_tw/Code1001.cabal
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@ -0,0 +1,25 @@
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-- Initial Code1001.cabal generated by cabal init. For further
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-- documentation, see http://haskell.org/cabal/users-guide/
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name: Code1001
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version: 0.1.0.0
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synopsis: Twitter sentiment analysis.
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-- description:
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homepage: haskelldata.com
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license: GPL-2
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license-file: ../LICENSE
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author: Nishant Shukla
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maintainer: nick722@gmail.com
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-- copyright:
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category: Network
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build-type: Simple
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-- extra-source-files:
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cabal-version: >=1.10
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executable Code1001
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main-is: Main.hs
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-- other-modules:
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other-extensions: OverloadedStrings, ConstraintKinds, FlexibleContexts
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build-depends: base >=4.6 && <4.7, yocto, twitter-conduit >=0.0 && <0.1, authenticate-oauth >=1.4 && <1.5, network >=2.5 && <2.6, http-conduit >=2.0 && <2.1, containers >=0.5 && <0.6, bytestring >=0.10 && <0.11, case-insensitive >=1.2 && <1.3, transformers >=0.3 && <0.4, transformers-base >=0.4 && <0.5, resourcet >=0.4 && <0.5, monad-logger >=0.3 && <0.4, lens >=4.1 && <4.2, conduit >=1.0 && <1.1, text >=0.11 && <0.12, HTTP >=4000.2 && <4000.3, twitter-types >=0.2 && <0.3
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-- hs-source-dirs:
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default-language: Haskell2010
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62
Ch10/Code01_tw/Common.hs
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62
Ch10/Code01_tw/Common.hs
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@ -0,0 +1,62 @@
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE ConstraintKinds #-}
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{-# LANGUAGE FlexibleContexts #-}
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module Common where
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import Web.Twitter.Conduit
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import Web.Authenticate.OAuth as OA
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import qualified Network.URI as URI
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import Network.HTTP.Conduit
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import qualified Data.Map as M
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import qualified Data.ByteString.Char8 as S8
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import qualified Data.CaseInsensitive as CI
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import Control.Applicative
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import Control.Monad.IO.Class
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import Control.Monad.Base
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import Control.Monad.Trans.Resource
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import System.Environment
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import Control.Monad.Logger
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import Control.Lens
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getOAuthTokens :: IO (OAuth, Credential)
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getOAuthTokens = do
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consumerKey <- getEnv' "OAUTH_CONSUMER_KEY"
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consumerSecret <- getEnv' "OAUTH_CONSUMER_SECRET"
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accessToken <- getEnv' "OAUTH_ACCESS_TOKEN"
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accessSecret <- getEnv' "OAUTH_ACCESS_SECRET"
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let oauth = twitterOAuth
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{ oauthConsumerKey = consumerKey
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, oauthConsumerSecret = consumerSecret
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}
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cred = Credential
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[ ("oauth_token", accessToken)
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, ("oauth_token_secret", accessSecret)
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]
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return (oauth, cred)
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where
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getEnv' = (S8.pack <$>) . getEnv
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getProxyEnv :: IO (Maybe Proxy)
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getProxyEnv = do
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env <- M.fromList . over (mapped . _1) CI.mk <$> getEnvironment
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let u = M.lookup "https_proxy" env <|>
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M.lookup "http_proxy" env <|>
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M.lookup "proxy" env >>= URI.parseURI >>= URI.uriAuthority
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return $ Proxy <$> (S8.pack . URI.uriRegName <$> u) <*> (parsePort . URI.uriPort <$> u)
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where
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parsePort :: String -> Int
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parsePort [] = 8080
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parsePort (':':xs) = read xs
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parsePort xs = error $ "port number parse failed " ++ xs
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runTwitterFromEnv :: (MonadIO m, MonadBaseControl IO m) => TW (ResourceT m) a -> m a
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runTwitterFromEnv task = do
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pr <- liftBase getProxyEnv
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(oa, cred) <- liftBase getOAuthTokens
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let env = (setCredential oa cred def) { twProxy = pr }
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runTW env task
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runTwitterFromEnv' :: (MonadIO m, MonadBaseControl IO m) => TW (ResourceT (NoLoggingT m)) a -> m a
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runTwitterFromEnv' = runNoLoggingT . runTwitterFromEnv
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65
Ch10/Code01_tw/Main.hs
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65
Ch10/Code01_tw/Main.hs
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{-# LANGUAGE OverloadedStrings #-}
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import qualified Data.Conduit as C
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import qualified Data.Conduit.List as CL
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import qualified Data.Text.IO as T
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import qualified Data.Text as T
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import Control.Monad.IO.Class (liftIO)
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import Network.HTTP (getResponseBody, getRequest, simpleHTTP, urlEncode)
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import Text.JSON.Yocto
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import Web.Twitter.Conduit (stream, statusesFilterByTrack)
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import Common
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import Control.Lens ((^!), act)
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import Data.Map ((!))
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import Data.List (isInfixOf, or)
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import Web.Twitter.Types (userScreenName, statusUser, statusText, StreamingAPI(..))
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-- Streaming Twitter for real-time sentiment analysis
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main :: IO ()
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main = do
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let query = "x-men"
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T.putStrLn $ T.concat [ "Streaming Tweets that match \""
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, query, "\"..."]
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analyze query
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analyze :: T.Text -> IO ()
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analyze query = runTwitterFromEnv' $ do
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src <- stream $ statusesFilterByTrack query
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src C.$$+- CL.mapM_ (^! act (liftIO . process))
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process :: StreamingAPI -> IO ()
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process (SStatus s) = do
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let theUser = userScreenName $ statusUser s
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let theTweet = statusText s
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T.putStrLn $ T.concat [theUser, ": ", theTweet]
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val <- sentiment $ T.unpack theTweet
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let record = (T.unpack theUser) ++ "," ++ (show.fromRational) val ++ "\n"
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appendFile "output.csv" record
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print val
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process s = return ()
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clean :: String -> String
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clean str = unwords $ filter
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(\w -> not (or
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[ isInfixOf "@" w
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, isInfixOf "#" w
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, isInfixOf "http://" w ]))
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(words str)
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sentiment :: String -> IO Rational
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sentiment str = do
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let baseURL = "http://www.sentiment140.com/api/classify?text="
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resp <- simpleHTTP $ getRequest $ baseURL ++ (urlEncode.clean) str
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body <- getResponseBody resp
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let p = polarity (decode body) / 4.0
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return p
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polarity :: Value -> Rational
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polarity (Object m) = polarity' $ m ! "results"
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where polarity' (Object m) = fromNumber $ m ! "polarity"
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fromNumber (Number n) = n
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polarity _ = -1
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5
Ch10/Code01_tw/Makefile
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5
Ch10/Code01_tw/Makefile
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@ -0,0 +1,5 @@
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default:
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cabal install --bindir=./
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clean:
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rm -rf dist Setup.hs Code1001 *~
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25
Ch10/Code02_irc/Code1002.cabal
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25
Ch10/Code02_irc/Code1002.cabal
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-- Initial Code1002.cabal generated by cabal init. For further
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-- documentation, see http://haskell.org/cabal/users-guide/
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name: Code1002
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version: 0.1.0.0
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synopsis: IRC example.
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-- description:
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homepage: haskelldata.com
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license: GPL-2
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license-file: ../LICENSE
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author: Nishant Shukla
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maintainer: nick722@gmail.com
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-- copyright:
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category: Network
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build-type: Simple
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-- extra-source-files:
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cabal-version: >=1.10
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executable Code1002
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main-is: Main.hs
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-- other-modules:
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-- other-extensions:
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build-depends: base >=4.6 && <4.7, network >=2.5 && <2.6
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-- hs-source-dirs:
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default-language: Haskell2010
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28
Ch10/Code02_irc/Main.hs
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28
Ch10/Code02_irc/Main.hs
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import Network
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import System.IO
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import Text.Printf
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import Control.Monad (forever)
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server = "irc.freenode.org"
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port = 6667
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chan = "#haskelldata"
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nick = "awesome-haskell-bot"
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-- Reading IRC chat room messages
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main = do
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h <- connectTo server (PortNumber (fromIntegral port))
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hSetBuffering h NoBuffering
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write h "NICK" nick
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write h "USER" (nick++" 0 * :tutorial bot")
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write h "JOIN" chan
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listen h
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write :: Handle -> String -> String -> IO ()
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write h s t = do
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hPrintf h "%s %s\r\n" s t
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printf "> %s %s\n" s t
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listen :: Handle -> IO ()
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listen h = forever $ do
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s <- hGetLine h
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putStrLn s
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5
Ch10/Code02_irc/Makefile
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5
Ch10/Code02_irc/Makefile
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@ -0,0 +1,5 @@
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default:
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cabal install --bindir=./
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clean:
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rm -rf dist Setup.hs Code1002 *~
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25
Ch10/Code03_irc2/Code1003.cabal
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25
Ch10/Code03_irc2/Code1003.cabal
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@ -0,0 +1,25 @@
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-- Initial Code1003.cabal generated by cabal init. For further
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-- documentation, see http://haskell.org/cabal/users-guide/
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name: Code1003
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version: 0.1.0.0
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synopsis: Using an IRC library.
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-- description:
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homepage: haskelldata.com
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license: GPL-2
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license-file: ../LICENSE
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author: Nishant Shukla
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maintainer: nick722@gmail.com
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-- copyright:
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category: Network
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build-type: Simple
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-- extra-source-files:
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cabal-version: >=1.10
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executable Code1003
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main-is: Main.hs
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-- other-modules:
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other-extensions: OverloadedStrings
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build-depends: base >=4.6 && <4.7, simpleirc >=0.3 && <0.4, bytestring >=0.10 && <0.11
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-- hs-source-dirs:
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default-language: Haskell2010
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30
Ch10/Code03_irc2/Main.hs
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30
Ch10/Code03_irc2/Main.hs
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@ -0,0 +1,30 @@
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{-# LANGUAGE OverloadedStrings #-}
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import Network.SimpleIRC
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import Data.Maybe
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import qualified Data.ByteString.Char8 as B
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-- Responding to IRC messages
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onMessage :: EventFunc
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onMessage s m = do
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case msg of
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"host?" -> sendMsg s chan $ botMsg
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otherwise -> return ()
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where chan = fromJust $ mChan m
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msg = mMsg m
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host = case mHost m of
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Just h -> h
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Nothing -> "unknown"
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nick = case mNick m of
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Just n -> n
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Nothing -> "unknown user"
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botMsg = B.concat ["Hi ", nick, ", your host is ", host]
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events = [(Privmsg onMessage)]
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freenode = (mkDefaultConfig "irc.freenode.net" "awesome-bot")
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{ cChannels = ["#haskelldata"] -- Channels to join on connect
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, cEvents = events -- Events to bind
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}
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main = connect freenode False True
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5
Ch10/Code03_irc2/Makefile
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5
Ch10/Code03_irc2/Makefile
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@ -0,0 +1,5 @@
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default:
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cabal install --bindir=./
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clean:
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rm -rf dist Setup.hs Code1003 *~
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25
Ch10/Code04_poll/Code1004.cabal
Normal file
25
Ch10/Code04_poll/Code1004.cabal
Normal file
@ -0,0 +1,25 @@
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-- Initial Code1004.cabal generated by cabal init. For further
|
||||
-- documentation, see http://haskell.org/cabal/users-guide/
|
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|
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name: Code1004
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version: 0.1.0.0
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synopsis: Polling a webserver.
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-- description:
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homepage: haskelldata.com
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license: GPL-2
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license-file: ../LICENSE
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author: Nishant Shukla
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maintainer: nick722@gmail.com
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-- copyright:
|
||||
category: Network
|
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build-type: Simple
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-- extra-source-files:
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cabal-version: >=1.10
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|
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executable Code1004
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main-is: Main.hs
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-- other-modules:
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-- other-extensions:
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build-depends: base >=4.6 && <4.7, HTTP >=4000.2 && <4000.3, text >=0.11 && <0.12
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-- hs-source-dirs:
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default-language: Haskell2010
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28
Ch10/Code04_poll/Main.hs
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28
Ch10/Code04_poll/Main.hs
Normal file
@ -0,0 +1,28 @@
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import Network.HTTP
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import Control.Concurrent (threadDelay)
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import qualified Data.Text as T
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url = "http://www.reddit.com/r/pics/new.json"
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latest :: IO String
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latest = simpleHTTP (getRequest url) >>= getResponseBody
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|
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-- Polling a web server
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doWork str = length $ T.breakOnAll
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(T.pack "imgur.com/") (T.pack str)
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|
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poll :: IO a
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poll = do
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body <- latest
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print $ doWork body
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threadDelay (10 * 10^6)
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poll
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|
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main :: IO a
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main = do
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putStrLn $ "Polling " ++ url ++ " ..."
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poll
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|
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|
5
Ch10/Code04_poll/Makefile
Normal file
5
Ch10/Code04_poll/Makefile
Normal file
@ -0,0 +1,5 @@
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default:
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cabal install --bindir=./
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|
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clean:
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rm -rf dist Setup.hs Code1004 *~
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25
Ch10/Code05_file/Code1005.cabal
Normal file
25
Ch10/Code05_file/Code1005.cabal
Normal file
@ -0,0 +1,25 @@
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-- Initial Code1005.cabal generated by cabal init. For further
|
||||
-- documentation, see http://haskell.org/cabal/users-guide/
|
||||
|
||||
name: Code1005
|
||||
version: 0.1.0.0
|
||||
synopsis: Detecting file-system modifications.
|
||||
-- description:
|
||||
homepage: haskelldata.com
|
||||
license: GPL-2
|
||||
license-file: ../LICENSE
|
||||
author: Nishant Shukla
|
||||
maintainer: nick722@gmail.com
|
||||
-- copyright:
|
||||
category: System
|
||||
build-type: Simple
|
||||
-- extra-source-files:
|
||||
cabal-version: >=1.10
|
||||
|
||||
executable Code1005
|
||||
main-is: Main.hs
|
||||
-- other-modules:
|
||||
other-extensions: OverloadedStrings
|
||||
build-depends: base >=4.6 && <4.7, system-filepath >=0.4 && <0.5, fsnotify >=0.1 && <0.2, system-fileio >=0.3 && <0.4
|
||||
-- hs-source-dirs:
|
||||
default-language: Haskell2010
|
29
Ch10/Code05_file/Main.hs
Normal file
29
Ch10/Code05_file/Main.hs
Normal file
@ -0,0 +1,29 @@
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
import Filesystem.Path.CurrentOS
|
||||
|
||||
import System.FSNotify
|
||||
import Filesystem
|
||||
import Filesystem.Path (filename)
|
||||
|
||||
-- Detecting real-time file changes
|
||||
main :: IO ()
|
||||
main = do
|
||||
-- let wd = "."
|
||||
wd <- getWorkingDirectory
|
||||
print wd
|
||||
man <- startManager
|
||||
watchTree man wd (const True) doWork
|
||||
putStrLn "press return to stop"
|
||||
getLine
|
||||
putStrLn "watching stopped, press return to exit"
|
||||
stopManager man
|
||||
getLine
|
||||
return ()
|
||||
|
||||
doWork :: Event -> IO ()
|
||||
doWork (Added filepath time) =
|
||||
putStrLn $ (show $ filename filepath) ++ " added"
|
||||
doWork (Modified filepath time) =
|
||||
putStrLn $ (show $ filename filepath) ++ " modified"
|
||||
doWork (Removed filepath time) =
|
||||
putStrLn $ (show $ filename filepath) ++ " removed"
|
5
Ch10/Code05_file/Makefile
Normal file
5
Ch10/Code05_file/Makefile
Normal file
@ -0,0 +1,5 @@
|
||||
default:
|
||||
cabal install --bindir=./
|
||||
|
||||
clean:
|
||||
rm -rf dist Setup.hs Code1005 *~
|
25
Ch10/Code06_socket/Code1006.cabal
Normal file
25
Ch10/Code06_socket/Code1006.cabal
Normal file
@ -0,0 +1,25 @@
|
||||
-- Initial Code1006.cabal generated by cabal init. For further
|
||||
-- documentation, see http://haskell.org/cabal/users-guide/
|
||||
|
||||
name: Code1006
|
||||
version: 0.1.0.0
|
||||
synopsis: Socket programming.
|
||||
-- description:
|
||||
homepage: haskelldata.com
|
||||
license: GPL-2
|
||||
license-file: ../LICENSE
|
||||
author: Nishant Shukla
|
||||
maintainer: nick722@gmail.com
|
||||
-- copyright:
|
||||
category: System
|
||||
build-type: Simple
|
||||
-- extra-source-files:
|
||||
cabal-version: >=1.10
|
||||
|
||||
executable Code1006
|
||||
main-is: Main.hs
|
||||
-- other-modules:
|
||||
-- other-extensions:
|
||||
build-depends: base >=4.6 && <4.7, network >=2.5 && <2.6
|
||||
-- hs-source-dirs:
|
||||
default-language: Haskell2010
|
32
Ch10/Code06_socket/Main.hs
Normal file
32
Ch10/Code06_socket/Main.hs
Normal file
@ -0,0 +1,32 @@
|
||||
import Network (listenOn, withSocketsDo, accept, PortID(..), Socket)
|
||||
import System.Environment (getArgs)
|
||||
import System.IO (hSetBuffering, hGetLine, hPutStrLn, BufferMode(..), Handle)
|
||||
import Control.Concurrent (forkIO)
|
||||
|
||||
-- Communicating in real-time with sockets
|
||||
main :: IO ()
|
||||
main = withSocketsDo $ do
|
||||
let port = PortNumber 9001
|
||||
socket <- listenOn port
|
||||
putStrLn "Listening..."
|
||||
sockHandler socket
|
||||
|
||||
sockHandler :: Socket -> IO ()
|
||||
sockHandler socket = do
|
||||
(h, _, _) <- accept socket
|
||||
putStrLn "Connected!"
|
||||
hSetBuffering h LineBuffering
|
||||
forkIO $ process h
|
||||
forkIO $ respond h
|
||||
sockHandler socket
|
||||
|
||||
respond h = withSocketsDo $ do
|
||||
txt <- getLine
|
||||
hPutStrLn h txt
|
||||
respond h
|
||||
|
||||
process :: Handle -> IO ()
|
||||
process h = do
|
||||
line <- hGetLine h
|
||||
print line
|
||||
process h
|
5
Ch10/Code06_socket/Makefile
Normal file
5
Ch10/Code06_socket/Makefile
Normal file
@ -0,0 +1,5 @@
|
||||
default:
|
||||
cabal install --bindir=./
|
||||
|
||||
clean:
|
||||
rm -rf dist Setup.hs Code1006 *~
|
25
Ch10/Code06_socket/client.hs
Normal file
25
Ch10/Code06_socket/client.hs
Normal file
@ -0,0 +1,25 @@
|
||||
import Network (connectTo, withSocketsDo, PortID(..))
|
||||
import System.Environment (getArgs)
|
||||
import System.IO (hSetBuffering, hPutStrLn, hGetLine, BufferMode(..))
|
||||
import Control.Concurrent (forkIO)
|
||||
|
||||
main = withSocketsDo $ do
|
||||
let port = PortNumber 9001
|
||||
h <- connectTo "localhost" port
|
||||
putStrLn "Connected!"
|
||||
hSetBuffering h LineBuffering
|
||||
forkIO $ respond h
|
||||
forkIO $ process h
|
||||
loop
|
||||
|
||||
loop = loop
|
||||
|
||||
respond h = do
|
||||
txt <- getLine
|
||||
hPutStrLn h txt
|
||||
respond h
|
||||
|
||||
process h = do
|
||||
line <- hGetLine h
|
||||
print line
|
||||
process h
|
25
Ch10/Code07_cam/Code1007.cabal
Normal file
25
Ch10/Code07_cam/Code1007.cabal
Normal file
@ -0,0 +1,25 @@
|
||||
-- Initial Code1007.cabal generated by cabal init. For further
|
||||
-- documentation, see http://haskell.org/cabal/users-guide/
|
||||
|
||||
name: Code1007
|
||||
version: 0.1.0.0
|
||||
synopsis: Facial detection.
|
||||
-- description:
|
||||
homepage: haskelldata.com
|
||||
license: GPL-2
|
||||
license-file: ../LICENSE
|
||||
author: Nishant Shukla
|
||||
maintainer: nick722@gmail.com
|
||||
-- copyright:
|
||||
category: Graphics
|
||||
build-type: Simple
|
||||
-- extra-source-files:
|
||||
cabal-version: >=1.10
|
||||
|
||||
executable Code1007
|
||||
main-is: Main.hs
|
||||
-- other-modules:
|
||||
-- other-extensions:
|
||||
build-depends: base >=4.6 && <4.7, cv-combinators >=0.1 && <0.2, HOpenCV >=0.1 && <0.2, allocated-processor >=0.0 && <0.1
|
||||
-- hs-source-dirs:
|
||||
default-language: Haskell2010
|
39
Ch10/Code07_cam/Main.hs
Normal file
39
Ch10/Code07_cam/Main.hs
Normal file
@ -0,0 +1,39 @@
|
||||
--sudo apt-get install libopencv-dev libsdl1.2-dev ftgl-dev
|
||||
--cabal install cv-combinators
|
||||
|
||||
import AI.CV.ImageProcessors
|
||||
|
||||
import qualified AI.CV.OpenCV.CV as CV
|
||||
import qualified Control.Processor as Processor
|
||||
import Control.Processor((--<))
|
||||
import AI.CV.OpenCV.Types (PImage)
|
||||
import AI.CV.OpenCV.CxCore(CvRect(..), CvSize(..))
|
||||
|
||||
import Prelude hiding (id)
|
||||
import Control.Arrow ((&&&), (***))
|
||||
import Control.Category ((>>>), id)
|
||||
|
||||
captureDev :: ImageSource
|
||||
--captureDev = videoFile "./video.mpeg"
|
||||
captureDev = camera 0
|
||||
|
||||
resizer :: ImageProcessor
|
||||
resizer = resize 320 240 CV.CV_INTER_LINEAR
|
||||
|
||||
edges :: ImageProcessor
|
||||
edges = canny 30 190 3
|
||||
|
||||
faceDetect :: Processor.IOProcessor PImage [CvRect]
|
||||
faceDetect = haarDetect "/usr/share/opencv/haarcascades/haarcascade_frontalface_alt.xml" 1.1 3 CV.cvHaarFlagNone (CvSize 20 20)
|
||||
|
||||
eyeDetect :: Processor.IOProcessor PImage [CvRect]
|
||||
eyeDetect = haarDetect "/usr/share/opencv/haarcascades/haarcascade_eye.xml" 1.1 3 CV.cvHaarFlagNone (CvSize 20 20)
|
||||
|
||||
faceRects = (id &&& faceDetect) >>> drawRects
|
||||
eyeRects = (id &&& eyeDetect) >>> drawRects
|
||||
|
||||
start = captureDev >>> resizer --< (faceRects *** eyeRects) >>> (window 0 *** window 1)
|
||||
|
||||
-- Detecting faces and eyes through a camera stream
|
||||
main :: IO ()
|
||||
main = runTillKeyPressed start
|
5
Ch10/Code07_cam/Makefile
Normal file
5
Ch10/Code07_cam/Makefile
Normal file
@ -0,0 +1,5 @@
|
||||
default:
|
||||
cabal install --bindir=./
|
||||
|
||||
clean:
|
||||
rm -rf dist Setup.hs Code1007 *~
|
25
Ch10/Code08_cam/Code1008.cabal
Normal file
25
Ch10/Code08_cam/Code1008.cabal
Normal file
@ -0,0 +1,25 @@
|
||||
-- Initial Code1008.cabal generated by cabal init. For further
|
||||
-- documentation, see http://haskell.org/cabal/users-guide/
|
||||
|
||||
name: Code1008
|
||||
version: 0.1.0.0
|
||||
synopsis: Template matching.
|
||||
-- description:
|
||||
homepage: haskelldata.com
|
||||
license: GPL-2
|
||||
license-file: ../LICENSE
|
||||
author: Nishant Shukla
|
||||
maintainer: nick722@gmail.com
|
||||
-- copyright:
|
||||
category: Graphics
|
||||
build-type: Simple
|
||||
-- extra-source-files:
|
||||
cabal-version: >=1.10
|
||||
|
||||
executable Code1008
|
||||
main-is: Main.hs
|
||||
-- other-modules:
|
||||
-- other-extensions:
|
||||
build-depends: base >=4.6 && <4.7, CV >=0.3 && <0.4
|
||||
-- hs-source-dirs:
|
||||
default-language: Haskell2010
|
26
Ch10/Code08_cam/Main.hs
Normal file
26
Ch10/Code08_cam/Main.hs
Normal file
@ -0,0 +1,26 @@
|
||||
{-#LANGUAGE ScopedTypeVariables#-}
|
||||
module Main where
|
||||
import CV.Image (loadImage, rgbToGray, getSize)
|
||||
import CV.Video (captureFromCam, streamFromVideo)
|
||||
import Utils.Stream (runStream_, takeWhileS, sideEffect)
|
||||
import CV.HighGUI (showImage, waitKey)
|
||||
import CV.TemplateMatching (simpleTemplateMatch, MatchType(..))
|
||||
import CV.ImageOp ((<#))
|
||||
import CV.Drawing (circleOp, ShapeStyle(..))
|
||||
|
||||
-- Streaming camera frames for template matching
|
||||
main = do
|
||||
Just t <- loadImage "lena.jpg"
|
||||
Just c <- captureFromCam 0
|
||||
runStream_ . sideEffect (process t) .
|
||||
takeWhileS (\_ -> True) $ streamFromVideo c
|
||||
|
||||
process t img = do
|
||||
let gray = rgbToGray img
|
||||
let ((mx, my), _) = simpleTemplateMatch CCOEFF_NORMED gray t
|
||||
let circleSize = (fst (getSize t)) `div` 2
|
||||
let circleCenter = (mx + circleSize, my + circleSize)
|
||||
showImage "test" (img <# circleOp (0,0,0)
|
||||
circleCenter circleSize (Stroked 3))
|
||||
waitKey 100
|
||||
return ()
|
5
Ch10/Code08_cam/Makefile
Normal file
5
Ch10/Code08_cam/Makefile
Normal file
@ -0,0 +1,5 @@
|
||||
default:
|
||||
cabal install --bindir=./
|
||||
|
||||
clean:
|
||||
rm -rf dist Setup.hs Code1008 *~
|
BIN
Ch10/Code08_cam/lena.jpg
Normal file
BIN
Ch10/Code08_cam/lena.jpg
Normal file
Binary file not shown.
After Width: | Height: | Size: 37 KiB |
339
Ch10/LICENSE
Normal file
339
Ch10/LICENSE
Normal file
@ -0,0 +1,339 @@
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
License is intended to guarantee your freedom to share and change free
|
||||
software--to make sure the software is free for all its users. This
|
||||
General Public License applies to most of the Free Software
|
||||
Foundation's software and to any other program whose authors commit to
|
||||
using it. (Some other Free Software Foundation software is covered by
|
||||
the GNU Lesser General Public License instead.) You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
this service if you wish), that you receive source code or can get it
|
||||
if you want it, that you can change the software or use pieces of it
|
||||
in new free programs; and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
anyone to deny you these rights or to ask you to surrender the rights.
|
||||
These restrictions translate to certain responsibilities for you if you
|
||||
distribute copies of the software, or if you modify it.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must give the recipients all the rights that
|
||||
you have. You must make sure that they, too, receive or can get the
|
||||
source code. And you must show them these terms so they know their
|
||||
rights.
|
||||
|
||||
We protect your rights with two steps: (1) copyright the software, and
|
||||
(2) offer you this license which gives you legal permission to copy,
|
||||
distribute and/or modify the software.
|
||||
|
||||
Also, for each author's protection and ours, we want to make certain
|
||||
that everyone understands that there is no warranty for this free
|
||||
software. If the software is modified by someone else and passed on, we
|
||||
want its recipients to know that what they have is not the original, so
|
||||
that any problems introduced by others will not reflect on the original
|
||||
authors' reputations.
|
||||
|
||||
Finally, any free program is threatened constantly by software
|
||||
patents. We wish to avoid the danger that redistributors of a free
|
||||
program will individually obtain patent licenses, in effect making the
|
||||
program proprietary. To prevent this, we have made it clear that any
|
||||
patent must be licensed for everyone's free use or not licensed at all.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||
|
||||
0. This License applies to any program or other work which contains
|
||||
a notice placed by the copyright holder saying it may be distributed
|
||||
under the terms of this General Public License. The "Program", below,
|
||||
refers to any such program or work, and a "work based on the Program"
|
||||
means either the Program or any derivative work under copyright law:
|
||||
that is to say, a work containing the Program or a portion of it,
|
||||
either verbatim or with modifications and/or translated into another
|
||||
language. (Hereinafter, translation is included without limitation in
|
||||
the term "modification".) Each licensee is addressed as "you".
|
||||
|
||||
Activities other than copying, distribution and modification are not
|
||||
covered by this License; they are outside its scope. The act of
|
||||
running the Program is not restricted, and the output from the Program
|
||||
is covered only if its contents constitute a work based on the
|
||||
Program (independent of having been made by running the Program).
|
||||
Whether that is true depends on what the Program does.
|
||||
|
||||
1. You may copy and distribute verbatim copies of the Program's
|
||||
source code as you receive it, in any medium, provided that you
|
||||
conspicuously and appropriately publish on each copy an appropriate
|
||||
copyright notice and disclaimer of warranty; keep intact all the
|
||||
notices that refer to this License and to the absence of any warranty;
|
||||
and give any other recipients of the Program a copy of this License
|
||||
along with the Program.
|
||||
|
||||
You may charge a fee for the physical act of transferring a copy, and
|
||||
you may at your option offer warranty protection in exchange for a fee.
|
||||
|
||||
2. You may modify your copy or copies of the Program or any portion
|
||||
of it, thus forming a work based on the Program, and copy and
|
||||
distribute such modifications or work under the terms of Section 1
|
||||
above, provided that you also meet all of these conditions:
|
||||
|
||||
a) You must cause the modified files to carry prominent notices
|
||||
stating that you changed the files and the date of any change.
|
||||
|
||||
b) You must cause any work that you distribute or publish, that in
|
||||
whole or in part contains or is derived from the Program or any
|
||||
part thereof, to be licensed as a whole at no charge to all third
|
||||
parties under the terms of this License.
|
||||
|
||||
c) If the modified program normally reads commands interactively
|
||||
when run, you must cause it, when started running for such
|
||||
interactive use in the most ordinary way, to print or display an
|
||||
announcement including an appropriate copyright notice and a
|
||||
notice that there is no warranty (or else, saying that you provide
|
||||
a warranty) and that users may redistribute the program under
|
||||
these conditions, and telling the user how to view a copy of this
|
||||
License. (Exception: if the Program itself is interactive but
|
||||
does not normally print such an announcement, your work based on
|
||||
the Program is not required to print an announcement.)
|
||||
|
||||
These requirements apply to the modified work as a whole. If
|
||||
identifiable sections of that work are not derived from the Program,
|
||||
and can be reasonably considered independent and separate works in
|
||||
themselves, then this License, and its terms, do not apply to those
|
||||
sections when you distribute them as separate works. But when you
|
||||
distribute the same sections as part of a whole which is a work based
|
||||
on the Program, the distribution of the whole must be on the terms of
|
||||
this License, whose permissions for other licensees extend to the
|
||||
entire whole, and thus to each and every part regardless of who wrote it.
|
||||
|
||||
Thus, it is not the intent of this section to claim rights or contest
|
||||
your rights to work written entirely by you; rather, the intent is to
|
||||
exercise the right to control the distribution of derivative or
|
||||
collective works based on the Program.
|
||||
|
||||
In addition, mere aggregation of another work not based on the Program
|
||||
with the Program (or with a work based on the Program) on a volume of
|
||||
a storage or distribution medium does not bring the other work under
|
||||
the scope of this License.
|
||||
|
||||
3. You may copy and distribute the Program (or a work based on it,
|
||||
under Section 2) in object code or executable form under the terms of
|
||||
Sections 1 and 2 above provided that you also do one of the following:
|
||||
|
||||
a) Accompany it with the complete corresponding machine-readable
|
||||
source code, which must be distributed under the terms of Sections
|
||||
1 and 2 above on a medium customarily used for software interchange; or,
|
||||
|
||||
b) Accompany it with a written offer, valid for at least three
|
||||
years, to give any third party, for a charge no more than your
|
||||
cost of physically performing source distribution, a complete
|
||||
machine-readable copy of the corresponding source code, to be
|
||||
distributed under the terms of Sections 1 and 2 above on a medium
|
||||
customarily used for software interchange; or,
|
||||
|
||||
c) Accompany it with the information you received as to the offer
|
||||
to distribute corresponding source code. (This alternative is
|
||||
allowed only for noncommercial distribution and only if you
|
||||
received the program in object code or executable form with such
|
||||
an offer, in accord with Subsection b above.)
|
||||
|
||||
The source code for a work means the preferred form of the work for
|
||||
making modifications to it. For an executable work, complete source
|
||||
code means all the source code for all modules it contains, plus any
|
||||
associated interface definition files, plus the scripts used to
|
||||
control compilation and installation of the executable. However, as a
|
||||
special exception, the source code distributed need not include
|
||||
anything that is normally distributed (in either source or binary
|
||||
form) with the major components (compiler, kernel, and so on) of the
|
||||
operating system on which the executable runs, unless that component
|
||||
itself accompanies the executable.
|
||||
|
||||
If distribution of executable or object code is made by offering
|
||||
access to copy from a designated place, then offering equivalent
|
||||
access to copy the source code from the same place counts as
|
||||
distribution of the source code, even though third parties are not
|
||||
compelled to copy the source along with the object code.
|
||||
|
||||
4. You may not copy, modify, sublicense, or distribute the Program
|
||||
except as expressly provided under this License. Any attempt
|
||||
otherwise to copy, modify, sublicense or distribute the Program is
|
||||
void, and will automatically terminate your rights under this License.
|
||||
However, parties who have received copies, or rights, from you under
|
||||
this License will not have their licenses terminated so long as such
|
||||
parties remain in full compliance.
|
||||
|
||||
5. You are not required to accept this License, since you have not
|
||||
signed it. However, nothing else grants you permission to modify or
|
||||
distribute the Program or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
|
||||
modifying or distributing the Program (or any work based on the
|
||||
Program), you indicate your acceptance of this License to do so, and
|
||||
all its terms and conditions for copying, distributing or modifying
|
||||
the Program or works based on it.
|
||||
|
||||
6. Each time you redistribute the Program (or any work based on the
|
||||
Program), the recipient automatically receives a license from the
|
||||
original licensor to copy, distribute or modify the Program subject to
|
||||
these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties to
|
||||
this License.
|
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
|
||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Program at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Program by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Program.
|
||||
|
||||
If any portion of this section is held invalid or unenforceable under
|
||||
any particular circumstance, the balance of the section is intended to
|
||||
apply and the section as a whole is intended to apply in other
|
||||
circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system, which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
8. If the distribution and/or use of the Program is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Program under this License
|
||||
may add an explicit geographical distribution limitation excluding
|
||||
those countries, so that distribution is permitted only in or among
|
||||
countries not thus excluded. In such case, this License incorporates
|
||||
the limitation as if written in the body of this License.
|
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions
|
||||
of the General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Program
|
||||
specifies a version number of this License which applies to it and "any
|
||||
later version", you have the option of following the terms and conditions
|
||||
either of that version or of any later version published by the Free
|
||||
Software Foundation. If the Program does not specify a version number of
|
||||
this License, you may choose any version ever published by the Free Software
|
||||
Foundation.
|
||||
|
||||
10. If you wish to incorporate parts of the Program into other free
|
||||
programs whose distribution conditions are different, write to the author
|
||||
to ask for permission. For software which is copyrighted by the Free
|
||||
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||
make exceptions for this. Our decision will be guided by the two goals
|
||||
of preserving the free status of all derivatives of our free software and
|
||||
of promoting the sharing and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||
REPAIR OR CORRECTION.
|
||||
|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
when it starts in an interactive mode:
|
||||
|
||||
Gnomovision version 69, Copyright (C) year name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, the commands you use may
|
||||
be called something other than `show w' and `show c'; they could even be
|
||||
mouse-clicks or menu items--whatever suits your program.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Lesser General
|
||||
Public License instead of this License.
|
@ -6,8 +6,17 @@ Refer to the book for step-by-step explanations.
|
||||
|
||||
<p align="center"><a href="http://haskelldata.com" target="_blank"><img src="http://haskelldata.com/images/ch10.png"/></a></p>
|
||||
|
||||
# How to use
|
||||
# Recipes:
|
||||
* **Code01**: Streaming Twitter for real-time sentiment analysis
|
||||
* **Code02**: Reading IRC chat room messages
|
||||
* **Code03**: Responding to IRC messages
|
||||
* **Code04**: Polling a web server for the latest updates
|
||||
* **Code05**: Detecting real-time file directory changes
|
||||
* **Code06**: Communicating in real time through sockets
|
||||
* **Code07**: Detecting faces and eyes through a camera stream
|
||||
* **Code08**: Streaming camera frames for template matching
|
||||
|
||||
# How to use
|
||||
### Setting up the environment
|
||||
Install the [Haskell Platform](http://www.haskell.org/platform/).
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user