Unable to perform assignment because the left and right sides have a different number of elements. Picture is 464x464 pixels.

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Jonathan Harris 2019-4-17

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https://ww2.mathworks.cn/matlabcentral/answers/456986-unable-to-perform-assignment-because-the-left-and-right-sides-have-a-different-number-of-elements-p

评论： Walter Roberson 2019-4-17

wingding-star.jpg

img=imread('wingding-star.jpg');
%Task 1.B take white pixels and make them into random color
% Generate random number
rng(0,'twister');
a=0;
b=255;
random=(b-a).*rand(1000,1)+a;
%capture all white pixels
wpixels=red==255&green==255&blue==255;
% make white pixels random
red(wpixels)=random;
blue(wpixels)=random;
green(wpixels)=random;
rgbImage=cat(3,red,green,blue);
subplot(2,2,3);imshow(rgbImage);