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![Drawing rectangles - Mastering OpenCV 4 with Python [Book]](https://www.oreilly.com/library/view/mastering-opencv-4/9781789344912/assets/481682d2-4a6b-4d40-ad30-b1435338768f.png "Drawing rectangles - Mastering OpenCV 4 with Python [Book]")
Drawing rectangles - Mastering OpenCV 4 with Python [Book]
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GitHub - mathandy/python-opencv-rectangle-tracker: Use python and opencv to track a piece of letter-size printer paper while it's being written on.
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