MATLAB: Area calculation for patches

patch area calculation

Dear sir,
I want to find the area of the patches,which is the no of pixels within the region.How it is calculated? also i want to calculate the area of patches in the black region only.Please help sir

Best Answer

I = imread('capture1.jpg');
 [L,N] = superpixels(I,100);
 figure
BW = boundarymask(L);
imshow(imoverlay(I,BW,'cyan'),'InitialMagnification',67)
% Area of each patch 
A = zeros(N,1) ;
for i = 1:N
    A(i) = nnz(L==i) ;  % area in pixels 
end
Related Question