convert image and linear stretch

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;

Answer 1

[KSSV]

doc uint8 inbuilt function which converts double to uint8.

https://in.mathworks.com/help/matlab/ref/uint8.html

[RuiQi]

thanks ! but i think it truncates the values that are above the limit. Id like to perform a scaling operation as well.

Answer 2

[Walter Roberson]

im2uint8( mat2gray(depth) )