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Adjust Image Intensity Values to Specified Range

This example shows how to increase the contrast in a low-contrast grayscale image by remapping the data values to fill the entire available intensity range [0, 255].

Read image into the workspace.

I = imread('pout.tif');

Adjust the contrast of the image using imadjust.

J = imadjust(I);

Display the original image and the adjusted image, side-by-side. Note the increased contrast in the adjusted image.


Plot the histogram of the adjust image. Note that the histogram of the adjusted image uses values across the whole range.