使用PILLOW（PIL）检测简单的几何形状

Question

I have this project were I need Python to detect simple geometric shapes inside an image. Only using Pillow, for example:

After searching the internet, I still don't know how to achieve this. Thanks in advance for any help

Answer 1

Get edges first.

Magnitude = sqrt(dx2+dy2)

Threshold and convert to 0,1 magnitude image. Follow lines and look for corners, following perimeters of shapes.

Or write more complex corner detection algorithms as found in OpenCV .

Shape is based in number of corners found. (Looks like GTKbai !)