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Getting problem in Matlab GUI code.

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Muhammad Danish
Muhammad Danish 2016-10-7
回答： Image Analyst 2016-10-14
I am new to matlab. Will u please help me in matlab code for generate negative of image, contrast value of image and average intensity value of pixel in the image.

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回答（2 个）

Walter Roberson
Walter Roberson 2016-10-7
For uint8 images,
negativeImage = uint8(255) - YourImage;
For average intensity, rgb2gray() and then mean2()
You need to explain what contrast value you are looking for. One possibility is at https://www.mathworks.com/matlabcentral/answers/81133-how-to-calculate-contrast-per-pixel-cpp-of-an-image#answer_90845
Image Analyst
Image Analyst 2016-10-14
Try imadjust() to change the image, or colormap() to change just how it's displayed.

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