Representation of the 3D joint RGB histogram

This code plots a qualitative 3D RGB Histogram

This code plots a qualitative 3D RGB Histogram. The code waits for user input (to select an area) , processes the input and plots the result. In the result figure, each square represent a non-empty seed in the quantized 3D joint RGB histogram which its area is proportional to the value of the corresponding seed in the histogram.