Find Corner in image with low resolution (Checkerboard)

Question

IlPadrino 2019-1-10

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/439213-find-corner-in-image-with-low-resolution-checkerboard

回答： Rishabh Gupta 2019-1-17

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Hi Guys,

i need some help with a corner detection.

I printed a checkerboard and created an image of this checkerboard with a webcam. The problem is that the webcam has a low resolution, therefore it do not find all corners. So i enhanced the number of searched corner. Now it finds all corner but different one for the same Corner.

All Points are stored in a matrix therefore i don't know which element depends to which point.

(I can not use the checkerboard function because the fuction is not available in my Matlab Version)

My Question:

Is it possible to search the Extrema of all the point clouds to get 1 Point for each Corner? Or has sb an idea what i could do ? --> Please see the attached photo

Thanks for your help!