Find Corner in image with low resolution (Checkerboard)

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!

Answer 1

[Rishabh Gupta]

Hi IIPadrino,

I hope you are using the 'corner' function in your algorithm.

https://in.mathworks.com/help/images/ref/corner.html

You may refer to the below File Exchange submissions to get more insight on how to improve the detection algorithm.

https://in.mathworks.com/matlabcentral/fileexchange/9272-harris-corner-detector

https://in.mathworks.com/matlabcentral/fileexchange/45704-harris-corner-detection