Reduce color information (quantization) of a 24-bit RGB bitmap down to 8-bit palette-based bitmap.
make
or
mingw32-make # for MinGW32/64 users
or
makedos.bat # MS-DOS target
No external dependencies required. It was tested on macOS Monterey (clang) Windows 10 (LLVM MinGW64) and MS-DOS (DJGPP).
./unipal input.bmp [output.bmp] [-d[ither]]
Whereas:
input.bmp: image to be quantized, must be a 24-bit Windows bitmap.output.bmp: name of the file to store the output image.-d,-dither: enable dithering using 4x4 ordered matrix
If not specified, the output image will be stored as a 8-bit Windows bitmap under the default name output.bmp.
Left: Original; Middle: 8-bit undithered; Right 8-bit dithered.
