This is flood fill or paint bucket tool in matlab. scanline algoritm used because it fast. Seeds shown as red dots. The function itslef is flood_fill.m
zz_flood_fill_test.m - run it to test flood_fill.m
zz_flood_fill_test_movie.m - run it to get animation
zz_flood_fill_movie.m used in animation
explane.png - this picture explane how scanline works
smile.png - used in flood fill test
The idea is fill the object with horizontal lines. during line scan the line set seeds up and down if there is a place (explane.png). In next iteration new scan lines start from seeds. seed accumulated to a stack.
Maxim Vedenyov (2022). flood fill (scanline) (https://www.mathworks.com/matlabcentral/fileexchange/28716-flood-fill-scanline), MATLAB Central File Exchange. Retrieved .
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