This section presents some results on the studied techniques.

 
 Chart tests
  The following tests were performed from a 24-bit color reference chart in order to evaluate the color conversion.

24-bit chart (Wikipedia1)	Chart on Screen 5	Chart on Screen 8

  Reference: http://en.wikipedia.org/wiki/List_of_8-bit_computer_hardware_palettes


  MSX colors adaptation:

Windows Wallpaper Number of colors: 15 (MSX 1) Method: Eucidian Distance	Smurfs Number of colors: 15 (MSX 1) Method: Fuzzy Logic

Brazil volley team Number of colors: 16/512 (MSX 2) Method: Error Diffusion Palette: optimized	Fantastic 4 Number of colors: 256 (MSX 2) Method: Ordered Dithering

Girl - normal image Number of colors: 15 (MSX 1) Method: Error Diffusion	Girl - interlaced image Number of colors: 15 (MSX 1) Method: Error Diffusion

Girl Number of colors: 16/512 (MSX 2) Method: Eucidian Distance Palette: optimized	Girl Number of colors: 16/512 (MSX 2) Method: Error Diffusion Palette: optimized

Grayscale image Number of colors: 256 (MSX 2) Method: Error Diffusion	Grayscale image - bug fix Number of colors: 256 (MSX 2) Method: Error Diffusion

GSCREEN 14 Number of colors: 64 (V9990) Method: Error Diffusion	GSCREEN 26 Number of colors: 32768 (V9990) Method: Quantization

Download:

File	Description
error.zip	Octave/Matlab program using error diffusion.
euclideana.zip	Octave/Matlab program using Eucidian Distance.
examples.zip	Disk image with the example above.