Detect missing part of an object

[karinca]

Dear all,

I’m working on a project to detect missing part of an object. However, I couldn’t achieve to detect missing part by using adaptive threshold and contour functions. Do you have any idea to detect missing part by using OpenCV? Should I try Haar Cascade?

You can find the pictures of the objects enclosed.

Thanks in advance for your support,

[crackwitz]

crosspost:

Detect missing part of an object using python and opencv