Elena [service address] wrote:
Yes, but have a look a the result (srgb->cmyk) http://www.elenadomain.it/pub/argyll/ConversionRGB.jpg http://www.elenadomain.it/pub/argyll/ConversionCMYK.tif still a lot of bumps near the center, which start showing up already at moderate saturation. Still because of the K curve ? Any hint to avoid them ?
Hi, I think I've covered this fairly extensively in previous posts. To summarisz: These are likely the result of two factors, neither of which can be solved with the current code: 1) While adjusting the black generation curve can smooth the transition to the gamut surface on the neutral axis, there is no way of ensuring a smooth transition everywhere. 2) The black value on the gamut surface may itself be non-smooth. While not perfect, the result you have seems reasonable. Whether it is satisfactory depends on the type of imagery you are reproducing. If the imagery does not often have transitions that go to the gamut surface in problematic areas, it is likely to be satisfactory. Graeme Gill.