How to change a range of pixel values in a Grayscale JPEG image?

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Margery
Margery 2015-4-9
评论： Margery 2015-4-9
Hello, I want to change pixels from a given range e.g. 60-95 to 255. How can I do it? I did look at lots of codes but they are all just for single values and I'm new to Matlab

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David Young
David Young 2015-4-9
Like this (where A is the array containing the image):
A(A >= 60 & A <= 95) = 255;
By the way, that the image is stored on disk in JPEG format isn't relevant - once you've read it, it is just an array.

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