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[opencv/en] Fix some typos, grammar and spelling (#5032)

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@ -5,11 +5,11 @@ filename: learnopencv.py
contributors: contributors:
- ["Yogesh Ojha", "http://github.com/yogeshojha"] - ["Yogesh Ojha", "http://github.com/yogeshojha"]
--- ---
### Opencv ### OpenCV
OpenCV (Open Source Computer Vision) is a library of programming functions mainly aimed at real-time computer vision. OpenCV (Open Source Computer Vision) is a library of programming functions mainly aimed at real-time computer vision.
Originally developed by Intel, it was later supported by Willow Garage then Itseez (which was later acquired by Intel). Originally developed by Intel, it was later supported by Willow Garage then Itseez (which was later acquired by Intel).
OpenCV currently supports wide variety of languages like, C++, Python, Java etc OpenCV currently supports wide variety of languages like, C++, Python, Java, etc.
#### Installation #### Installation
Please refer to these articles for installation of OpenCV on your computer. Please refer to these articles for installation of OpenCV on your computer.
@ -18,7 +18,7 @@ Please refer to these articles for installation of OpenCV on your computer.
* Mac Installation Instructions (High Sierra): [https://medium.com/@nuwanprabhath/installing-opencv-in-macos-high-sierra-for-python-3-89c79f0a246a](https://medium.com/@nuwanprabhath/installing-opencv-in-macos-high-sierra-for-python-3-89c79f0a246a) * Mac Installation Instructions (High Sierra): [https://medium.com/@nuwanprabhath/installing-opencv-in-macos-high-sierra-for-python-3-89c79f0a246a](https://medium.com/@nuwanprabhath/installing-opencv-in-macos-high-sierra-for-python-3-89c79f0a246a)
* Linux Installation Instructions (Ubuntu 18.04): [https://www.pyimagesearch.com/2018/05/28/ubuntu-18-04-how-to-install-opencv](https://www.pyimagesearch.com/2018/05/28/ubuntu-18-04-how-to-install-opencv) * Linux Installation Instructions (Ubuntu 18.04): [https://www.pyimagesearch.com/2018/05/28/ubuntu-18-04-how-to-install-opencv](https://www.pyimagesearch.com/2018/05/28/ubuntu-18-04-how-to-install-opencv)
### Here we will be focusing on python implementation of OpenCV ### Here we will be focusing on Python implementation of OpenCV
```python ```python
# Reading image in OpenCV # Reading image in OpenCV
@ -28,21 +28,21 @@ img = cv2.imread('cat.jpg')
# Displaying the image # Displaying the image
# imshow() function is used to display the image # imshow() function is used to display the image
cv2.imshow('Image', img) cv2.imshow('Image', img)
# Your first arguement is the title of the window and second parameter is image # Your first argument is the title of the window and second parameter is image
# If you are getting error, Object Type None, your image path may be wrong. Please recheck the pack to the image # If you are getting an error, Object Type None, your image path may be wrong. Please recheck the path to the image
cv2.waitKey(0) cv2.waitKey(0)
# waitKey() is a keyboard binding function and takes arguement in milliseconds. For GUI events you MUST use waitKey() function. # waitKey() is a keyboard binding function and takes an argument in milliseconds. For GUI events you MUST use waitKey() function.
# Writing an image # Writing an image
cv2.imwrite('catgray.png', img) cv2.imwrite('catgray.png', img)
# first arguement is the file name and second is the image # The first argument is the file name and second is the image
# Convert image to grayscale # Convert image to grayscale
gray_image = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) gray_image = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
# Capturing Video from Webcam # Capturing Video from Webcam
cap = cv2.VideoCapture(0) cap = cv2.VideoCapture(0)
# 0 is your camera, if you have multiple camera, you need to enter their id # 0 is your camera, if you have multiple cameras, you need to enter their id
while True: while True:
# Capturing frame-by-frame # Capturing frame-by-frame
_, frame = cap.read() _, frame = cap.read()