Transform Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 1.2.5 GNOME Human Interface Guide Conformance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 1.2.6 when the tool is in ‘Traditional’ mode. Previously, only a transforming grid was shown. 1.2.5 GNOME Human Interface Guide Conformance A lot of work has been done on making the GIMP’s interface simpler and a file without losing resolution. In most cases the effects are too subtle to be detected by the human eye, but in some cases, mainly where there are large areas with slowly varying color gradients, the

when the tool is in "Traditional" mode. Previously, only a transforming grid was shown. GNOME Human Interface Guide conformance A lot of work has been done on making the GIMP's interface simpler and file without losing resolution. In most cases the effects are too subtle to be detected by the human eye, but in some cases, mainly where there are large areas with slowly varying color gradients, the layers, and running Unsharp Mask on the Value layer only, then recomposing. This works because the human eye has much finer resolution for brightness than for color. See the sections on Decompose and Compose

option produces slightly larger JPG files (than without the progressive option). Subsampling The human eye is not sensitive in the same way over the entire color spectrum. The compression can use this running Sharpen (Unsharp Mask) on the Value layer only, then recomposing. This works because the human eye has much finer resolution for brightness than for color. See the sections on Decompose and Compose the image, you won’t have much luck. For example, if you have a lovely beach scene, with a nasty human walking across the beach who you would like to teleport away, you will probably be able to find an

option to Optimize the image. JPEG uses lossy compression that takes advantage of the fact that the human brain cannot easily distinguish small differences in the Hue component of an image (see “Hue” on page portion that is part of both selections. While making additions or subtractions, remember “to err is human.” It’s a good idea to keep your middle finger prepared to press the right mouse but- ton. If you do al 2 1 1 C h a p ter 1 4 Gamut Gamut is the total number of colors a device can produce. The human eye can perceive a higher gamut than a 24 bit color monitor (RGB) can produce, but the gamut of a