http://www.registry.gimp.org/taxonomy/term/762 The taxonomy view with a depth of 0. en http://www.registry.gimp.org/node/17171 <p>FX-Foundry/Color/Separate Luminance...</p> <p>Creates two new layers: one containing the Luminance, and the other the Chroma information in the form of a Grain Merge. Optionally, it will color-enhance (maximize saturation in) the Chroma layer while still keeping it luminance-neutral.</p> <p>This allows you to do noise-reduction and sharpening on the two layers separately.</p> <p>Update (23-Jul-2009):<br /> Noticed that highly-saturated colors exceed the ability of the grain-extract/grain-merge to handle without clipping the color, so I have made the excess color get folded into the luminance layer. Most of the time, it will be un-noticeable, and even when it is, it shouldn't make any real difference. If you want to be sure your Lum layer is pure luminosity, you can check <b>Excess color on separate layer</b>. When merging, always merge onto the Lum layer rather than merging the two color layers together.</p> http://www.registry.gimp.org/node/17171#comments any Public Domain Script-Fu chroma color decomposition enhance luminance retouch Thu, 02 Jul 2009 18:43:26 +0200 Roy Johnson 17171 at http://www.registry.gimp.org