display cv2 image in jupyter notebook

1# matplotlib interprets images in RGB format, but OpenCV uses BGR format
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3# so to convert the image so that it's properly loaded, convert it before loading
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5img = cv2.imread('filename.ext')		# this is read in BGR format
6rgb_img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)		# this converts it into RGB
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8plt.imshow(rgb_img)
9plt.show()
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