灰度变换 加权

clc;
clear;
imrgb=imread('C:\Users\wangzhiyong\Desktop\canny\Right14.bmp');
imgray=rgbimage2gray(imrgb);
figure(1);
imshow(imgray);
figure(2);
imshow(imrgb);
function imgray=rgbimage2gray(imrgb)
[m,n,t]=size(imrgb);
for i=1:m
    for j=1:n
        for k=1:t
            
            imgray(i,j,k)=0*imrgb(i,j,1)+0*imrgb(i,j,2)+1*imrgb(i,j,3);%加权实现从真彩到灰度的降维转换
           
        end
           
    end
end
end