I would like to know the minimum and maximum intensity level in a grayscale picture? How do I find this?

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Victor Fletcher
Victor Fletcher 2018-11-24
评论： Image Analyst 2018-11-26
I have used imfinfo and I have figured out the size of the image (256x256)
I would now like to know the intensity levels of each of the pixels.
In particular what is the highest and lowest value of the intensity levels.

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Image Analyst
Image Analyst 2018-11-24
编辑：Image Analyst 2018-11-24
Try this:
impixelinfo; % Let's you mouse around and see gray levels. Or you could use impixel().
% Extrac min and max from the image array
minGrayLevel = min(grayImage(:));
maxGrayLevel = max(grayImage(:));
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Image Analyst
Image Analyst 2018-11-26
You have to have an image displayed for impixelinfo to work. It's instant, doesn't take 30 minutes. It will show you the results in a status bar in the lower left of your GUI if you mouse around above the image.

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