pixel by pixel squaring of image?

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RAVI KUMAR
RAVI KUMAR 2016-8-12
评论： Image Analyst 2019-11-22
If I have an image of size M by N then how can I do the square of each pixel individually?

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回答（1 个）

Sabarinathan Vadivelu
outImage = zeros(size(inputImage));
for i = 1 : size(inputImage, 1)
for j = 1 : size(inputImage, 2)
outImage(i, j) = inputImage(i,j)^2;
end
end
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maaham banu
maaham banu 2019-11-22
hi, why doesnt this algorithm work for a gray image? I am getting only 255
Image Analyst
Image Analyst 2019-11-22
Because if the value goes above 255, it clips to 255. You'll have to use uint16 or double. And don't use a for loop like this answer did. Use dot caret instead:
outImage = double(inputImage) .^ 2; % or uint16()

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