How to enhance image according to a transformation function

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kristie bell
kristie bell 2015-3-23
编辑： kristie bell 2015-3-23
Hi guys,
I am new to Matlab. I wanted to design a GUI that allows me to enhance a color image. I wanted to map the image according to a user input piecewise function that he clicked from the graphing axis.
for eg. the original image pixel value 5 enhanced to value 7, value 10 to value 13 etc. according to a linear plot.
Any advices on how i could do it?
Please help me! Any advice will be appreciated!

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