convert image and linear stretch

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RuiQi
RuiQi 2017-2-27
回答： Walter Roberson 2017-2-27
If i have an array of type double, how can i convert it to uint8 and linearly stretch all the values such that min = 0 and max = 255 ? do I have too write my own code for this ? Would this be the correct code ?
K = (depth - min(depth(:)))/(max(depth(:)) - min(depth(:)))*255;

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回答（2 个）

KSSV
KSSV 2017-2-27
doc uint8 inbuilt function which converts double to uint8.
https://in.mathworks.com/help/matlab/ref/uint8.html
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RuiQi
RuiQi 2017-2-27
thanks ! but i think it truncates the values that are above the limit. Id like to perform a scaling operation as well.

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Walter Roberson
Walter Roberson 2017-2-27
im2uint8( mat2gray(depth) )

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