Noel Carboni wrote: > To us negative values can't possibly make sense.
Note that in some contexts they do. Viewed as a 3D space, there are an infinite range of possible coordinates. When transforming through different appearance spaces, you can end up with intermediate values that are valid (in the sense that they mean something) but that are imaginary (they correspond to no realizable color). If you are gamut mapping, then you would like even imaginary values to be mapped in a way that preserves their fundamental characteristics (hue, lightness, saturation) as much as possible, as well as their relationships between each other. Clipping -ve per component values is easy to implement, but just like the whiter than the white point case, you can end up with hue shifts and other undesirable changes to the intended color. Graeme Gill. ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://sdm.link/zohodev2dev _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
