I have a high resolution texture with only seven colors that I apply to a makehuman model and I want in my rendered result also just those seven colors (plus a black background).
So far I have tried to to deactivate MIP Map and Interpolation, and different filters with small filter sizes in the Image Sampling panel. However, the result is as depicted in the following image:
Further, I tried to deactivate the Anti-Aliasing in the Render options, but still I do not get the desired result:
You see that the color fades, especially on color borders. The rendered image is rather small (160x120), but also if I increase the dimension, the problem remains.