Extract patches and save its coordinate points

I have an image [800 x 900 x 4 ]. I want to extract patches [patch size= 17 x 17] and at the same time save its corresponding coordinate (center).Can anyone give me suggestions or code for that?.

Thanks

[Walter Roberson]

Overlapping patches or not overlapping ?

[MD RESHAD UL HOQUE]

Overlapping patches

Answer 1

[Rik]

You previous question suggests you already have the center coordinates, why not save that variable as well? Anyway, you can easily extend the solution there to include the center coordinate.

(Also, it's better not to overwrite the patch function with a variable)

selected_patches = cell(length(x),2);
for i=1:length(x)
    xtemp=x(i)+[-8 8];
    xtemp(xtemp<1)=1;xtemp(xtemp>size(IM,1))=size(IM,1);
    ytemp=y(i)+[-8 8];
    ytemp(ytemp<1)=1;ytemp(ytemp>size(IM,2))=size(IM,2);
    selected_patches{i,1}=IM(xtemp,ytemp,:);
    selected_patches{i,2}=[x(i) y(i)];
end

[MD RESHAD UL HOQUE]

Thanks you