Crop an Image Tutorial and Example in Python OpenCV

It is easy to crop a part of image from a big image. In this tutorial, we will use an example to show you how to do.

1.Import opencv

import cv2

2.Read an image and get its width and height

img = cv2.imread("pyimg.jpg")
height, width = img.shape[0:2]

3.Determine the position of cropped image

startRow = int(height*.15)
startCol = int(width*.15)
endRow = int(height*.85)
endCol = int(width*.85)

In this tutorial, we will use the height of width of original image to get the position of cropped image.

4.Get cropped image

croppedImage = img[startRow:endRow, startCol:endCol]

5.Display the original and cropped image

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