Earlier quoted context omitted.
Indeed, I have observed for it to work better in the raw space. Even going to linear gamma space seems to hurt. However, it's not clear to me why should this be so. For a given wavelength, I would understand that mixing in physical space would be better, i.e., this may apply to lightness. Why should it not work better when applied more generically in a perceptual space (Note: I have worked with displays with more tha…
If you're trying to show raw space RG (50, 50), then when you show (100, 0) and (0, 100) in adjacent pixels, there are exactly 50 * 2 units of light distributed over each pair of pixels, so your eyes will see (50, 50) if the pixels are small/far enough. Another way to put this is that dithering works because of physical blending of photons due to an insufficiently sharp eye lens before perceptual mechanisms in the br…
Further, the question still remains why is it that mixing of photons spatially as you explained works better imperceptible pixels, and yet we need these non-linear color spaces when having larger areas.
Goes without saying that the intensity hit for 50 need not be the midpoint of that hit for 0 and 100 given the gamma curve, and actual mapping of the value to intensity for the pixel.