OpenCV，作为计算机视觉领域的领头羊，提供了丰富的工具集，让Python开发者能够轻松实现各种图像处理任务。 今天，我们就来探索OpenCV在Python中的9个惊艳应用实例，从基础到进阶，一步步带你领略图像处理的魅力。

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Thus the opencv-python package could maintain backwards compatibility by simply being a meta package that requires opencv-python-base and opencv-python-graphics. I'm not sure if this is easy / ...

OpenCV's real-time GUI interactions receive input from user through windows by creating trackbars, reading mouse movements and keyboard taps.

There are no wheels for Python 3.9 so pip tries to build from source. That fails because you do not have build tools installed as indicated by the error: ...