How to add a mask of a target in a picture

Matplotlib yes Python Amazing visualization library for array two-dimensional graphs in . Matplotlib It's based on NumPy Multi platform data visualization library constructed by array , Aimed at the wider SciPy Stack is used together . Axes Class contains most graphical elements ：Axis、Tick、Line2D、Text、Polygon etc. , And set the coordinate system . Axes The instance of supports callback through callback property . matplotlib In the axis module of the Library Matplotlib.axes.Axes.add_patch() Method is used to add a patch to the patch of the axis ; Return to patch .

Reference article ：
How to add a patch in a plot in Python ?
Python Image processing library (OpenCV,PIL,matplotlib and scikit-image)
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