Question

I’m trying to plot a histogram in matlab of a dicom image. This is a medical image format, and the colormap is not the standard [0 255] gray levels. so the imhist is not working for me. any suggestions?

Answer 1

If I remember correctly, DICOM images use uint16 for their pixels’ values.

Have you tried

imhist( I, max(I(:)) );

To force imhist to use the full range of uint16 values?

Alternatively, you can always use hist instead of imhist.

hist( I(:), max(I(:)) );