Martin Weberg wrote:Device K needed to meet L* of target K (iterative user input): icclu -ff -ia -s100 Device_Profile.icc
On Tue, Jan 27, 2009 at 09:41, Klaus Karcher wrote:you could also use xicclu -fif -kx instead of iteratively searching for the appropriate K value: xicclu -fif -kx -ia -s100 Device_Profile.iccI'll try that, thank you.
I guess it will work well as long as your paper and black chromaticities are close to the aim values -- otherwise there can be significant abouts of C, M or Y in the xicclu -fif result (You can avoid at least the paper tint issues by using the relative colorimetric intent when necessary). The xicclu -fif -kx result can be useful anyway: It helps to narrow down the interval for the iterative search: when xicclu -fif returns c, m, y and k, one can assume that the sought-after K value is in the interval [k ... k + max(c,m,y)]. Another approach would be to invert a K -> L table extracted from your measurements or calculated with icclu. Klaus