how to do convolution without commands

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Sivakumar Rajagopal
评论： Sivakumar Rajagopal 2020-4-6
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
Ameer Hamza 2020-4-3
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Ameer Hamza
Ameer Hamza 2020-4-3
See the calculation of res2. That code compares built-in convolution with for loop.

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