s047.m

来自「简单的数字图像处理程序」· M 代码 · 共 13 行

% 灰度图像对数变换  s047
I47=imread('1.jpg');
I470=rgb2gray(I47);
I471=im2double(I470);
[m,n]=size(I470);
q=1/log10(50);  
for i=1:m
    for j=1:n
        I472(i,j)=q*log10(1+49*I471(i,j));
    end
end
I473=im2uint8(I472);
imshow(I473)