PPT Slide
Iteration over Color Sets
The algorithm back projects those color sets that meet certain criteria.
This corresponds to the image’s support for each color in
the color set. A color set is used for back projection only
if for m, c[m] = 1, there are ra pixels of color m.
This corresponds to the un-allocated colors from the
histogram. A color set is used for back projection only
if for m such that c[m]=1, there are at least r2 pixels in
the global residue histogram of the color m.