how to do convolution without commands
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I=img;
b=rgb2gray(I); [Gx,Gy]=imgradientxy(b); figure();
[Gmag, Gdir] = imgradient(Gx,Gy);
gx=[-1 0 1; -2 0 2; -1 0 1];
gy=transpose(gx);
gi=gray2ind(b);
Fx=conv2(double(b),gx,'same')
In the above coding how to do convolution without conv2
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Ameer Hamza
2020-4-3
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See the answer by Iman Ansari on this question: https://www.mathworks.com/matlabcentral/answers/75073-built-in-2d-convolution-vs-for-loop-convolution-differences
3 个评论
Sivakumar Rajagopal
2020-4-3
Ameer Hamza
2020-4-3
See the calculation of res2. That code compares built-in convolution with for loop.
Sivakumar Rajagopal
2020-4-6
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