Remove unwanted regions in binary image

Question

Syed Haider 2018-1-18

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/377774-remove-unwanted-regions-in-binary-image

回答： Image Analyst 2018-1-18

I have the following input image.

I want to remove the unwanted regions highlighted with red ellipses. This binary image can be tilted at any angle. Hence, counting the white pixels in each row and applying thresholding didn't work for tilted image.

After removing unwanted regions, I want to reduce the thickness of this rectangle to single pixel thickness. I want to only consider the black pixels that are next to the white pixels and remove the outer black pixels. I have tried thin and skel morphological operations but didn't work for me.

Thanks in advance,

Syed