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how to detect shape of polygons after canny edge detection

after performing canny edge detection of my image(triangle) i have to make the program to identify what shape it is and type it out by detecting number of edges ,please help one more problem is that canny image consists of two concentric triangles ,since orignal image had a black thick border along the triangle please help!thank you

how to detect shape of polygons after canny edge detection

a.jpg after performing canny edge detection of my image(triangle) i have to make the program to identify what shape it is and type it out by detecting number of edges ,please help one more problem is that canny image consists of two concentric triangles ,since orignal image had a black thick border along the triangle please help!thank you

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updated 2016-11-28 09:12:30 -0600

berak gravatar image

how to detect shape of polygons after canny edge detection

a.jpga.jpg after performing canny edge detection of my image(triangle) i have to make the program to identify what shape it is and type it out by detecting number of edges ,please help one more problem is that canny image consists of two concentric triangles ,since orignal image had a black thick border along the triangle please help!thank you