how to equalise the brightness of an image

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selim
selim 2012-7-10
Hello everybody, i have a rgb image ''cup''.
www.uploadpic.org/v.php?img=kDONT2KPu
As we see, this has a non-uniform image right side of which is brighter.
I want to make addition only left side or maybe i can subtract from right side and create a new image.
I tried this : ...
cup=imread('cup.jpg');
sizeofcup=size(Image1);
middleofcoloumn=sizeofcup(2)/2;
NewImage= cup(:,1:middleofcoloumn)+50;
but it changes into gray and it is cropped.
how can i make it rgb and montage?

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采纳的回答

Image Analyst
Image Analyst 2012-7-10
You forgot that it is a color image. Try
NewImage = cup; % Initialize
New(:, 1:middleofcoloumn, :) = New(:, 1:middleofcoloumn, :) +50;

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