I have an image (picture in JPG-format, 256-bit color). I know how to plot histograms of different colors of my picture. But I want to plot histogram of color regions (regions square and color are a variable values).
I am afraid that Origin7.5 does not support it yet. But in Origin8.0, you can plot histogram of RED, GREEN and BLUE in image. You can download Origin8.0 demo from our website to try it.