matlab 显示一张图片到三维坐标

close all;
inputimage=imread('66_input.png');
Rchannel = inputimage(:,:,1); 
Gchannel = inputimage(:,:,2); 
Bchannel = inputimage(:,:,3); 


figure;
scatter3(Rchannel(:),Gchannel(:),Bchannel(:));


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