heya, sounds weird, will try to reproduce. the fitting of this function is using a spline, which may be prone to ringing, in between the colours you fixed. it has a linear part that fixes this issue for purely b/w, but may lead to issues for b/w + single colour.
cheers, -jo On Tue, Jul 11, 2017 at 10:23 PM, Heiko Bauke <[email protected]> wrote: > Hi, > > recently I became aware of some (to me) unexpected behavior of the color > look up table module. > > To reproduce the (possible) bug: > > * Activate the color look up module with its standard parameters (which > causes no color change to the image). > > * Remove successively all color patches by a right-click on the patch except > gray shaded patches. > > > Observed behavior: > > * The image color changes dramatically as soon as all color patches are > removed except one colorful patch and the gray shaded patches. > > > Expected behavior: > > The image should not be affected by the color look up table module as long > as the source color of each patch equals the target color. > > > I am not sure if this actually is a bug. Possibly just my expectation is > wrong. May be some of the darktable core developers can comment on this. > In case that this is an actual bug I will open a ticket. > > > Regards, > > Heiko > > > -- > -- Number Crunch Blog @ https://www.numbercrunch.de > -- Cluster Computing @ http://www.clustercomputing.de > -- Professional @ https://www.mpi-hd.mpg.de/personalhomes/bauke > -- Social Networking @ https://www.researchgate.net/profile/Heiko_Bauke > ___________________________________________________________________________ > darktable developer mailing list > to unsubscribe send a mail to [email protected] > ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to [email protected]
