MATLAB: Darkest pixel in image

histogramMATLAB

i want to get the darkest pixel in an image. the histogram represents the tonal distributions. the pixels that are darkest of all will be at the first line in histogram. how to get the pixels values that are in the darkest gray levels from an histogram. Please anybody help me.

Best Answer

X = rand(100);
[C,I] = min(X(:));

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MATLAB: How the Peak value of the image histogram can be obtaind

[pixelCounts, grayLevels] = imhist(grayImage);
[maxCount, indexOfMax] = max(pixelCounts);
grayLevelAtMax = grayLevels(indexOfMax);

MATLAB: Image histogram for color constancy

We have no knowledge of your color constancy program so we can't say why it will not display. In a regular MATLAB program with an axes, you'd do something like this:

[pixelCounts grayLevels] = imhist(grayImage, 256);
bar(grayLevels, pixelCounts, 'BarWidth', 1.0);

but that's for a gray scale image, not a color image. I also don't know what an "error ration" is. Finally, explain how you got the gray level image from the "original" image.

Best Answer

Related Solutions

MATLAB: How the Peak value of the image histogram can be obtaind

MATLAB: Image histogram for color constancy

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