Leaf recognition, color feature extraction, defect detection, etc

In the recognition of color histogram

 

function G = lianghua_hsv(A)
% take hsv Spatial nonuniform quantization .
% h Quantized into 8 level
% s Quantized into 3 level
% v Quantized into 3 level

[M,N,O] = size(A);
% Image denoising with median filter
[h s v] = zz_jiangzao(A);

h = h*360;
% h Component quantization
for i = 1:M
    for j = 1:N
        if h(i,j)>=0 && h(i,j)<=20
            H(i,j) = 0;
        end
        if h(i,j)>=21 && h(i,j)<=40
            H(i,j) = 1;
        end
        if h(i,j)>=41 && h(i,j)<=75
            H(i,j) = 2;
        end
        if h(i,j)>=76 && h(i,j)<=155