How to rescale a part of a 2D Matrix?

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Kevin San Diego
Kevin San Diego 2019-8-27
评论： Kevin San Diego 2019-8-27
Hello,
I have read an image using imread() and it returns a 2D Matrix of uint8.
I proceed to get the indeces of parts of the image which meet some conditions. For example, I store make_zero = image < 100 as I want to make these values zero. And I do, scale_above = image >= 100 which I want to rescale from x to y. I was hoping to use the rescale function.
However, after I get this 2D Matrix logical where the conditions meet, I am unsure how to proceed on how to use these indeces.
Thank you for your help!

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采纳的回答

Matt J
Matt J 2019-8-27
编辑：Matt J 2019-8-27
Why not as follows?
image(scale_above) = rescale(image(scale_above),____)
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Kevin San Diego
Kevin San Diego 2019-8-27
Thank you so much! I have been way to concerned with vectorisation and I feel as though it's changing the way I think about simple conditional statements.

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