Implement Edge Detection Using OpenCV

In this tutorial, we will introduce how to detect edge using python opencv.

1. Install opencv

pip install opencv-python

2. Import library

import cv2

3. Create a VideoCapture object

vcapture= cv2.VideoCapture(0)

We will process each frame of this video

4. Get all frame of video

while True:
  ret, frame = vcapture.read()

5. Convert colorful frame to grayscale

if ret == True:
    grayscale = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

6. Implement edge detection

edge = cv2.Canny(grayscale, 75, 125)
cv2.imshow('Edge frame', edge)
if cv2.waitKey(20) == ord('q'):
  break

7. Release resources

vcapture.release()
cv2.destroyAllWindows()

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