Super pixel allRGB

This application is inspired by the allRGB challenge:

The objective of allRGB is simple: To create images with one pixel for every RGB color (16,777,216); not one color missing, and not one color twice.

Strategy

1. All RGB values are first sorted. Different options are provided (by luminance, hue, value or distance to a reference color).
2. The sorted values are then split in blocs with the size of the super-pixels, and finally arranged according to a map of super-pixels.
3. A mozaic can easily be obtained by dispatching the super-pixels:

[0 0  1 1  2 2]        [0 1 2   0 1 2]
[0 0  1 1  2 2]        [3 4 5   3 4 5]
                       [6 7 8   6 7 8]
[3 3  4 4  5 5]   ->
[3 3  4 4  5 5]
                       [0 1 2   0 1 2]
[6 6  7 7  8 8]        [3 4 5   3 4 5]
[6 6  7 7  8 8]        [6 7 8   6 7 8]

Notes

• After having uploaded an image to be processed, you need to select Your image in the Super-pixel map selection box.
• The generated image is 4096×4096 pixels.
• The Super-pixel size parameter px defines the super-pixel-map size S = 4096 / px.
• The input image used to generate the super-pixel-map is cropped or padded to fit the S×S super-pixel-map.