Graeme Gill wrote: > yahvuu wrote: >> The only sane way to achieve this is, like James says, to "choose a >> single color space >> and stick with it". This is possible with floating point processing >> (GEGL). >> All imported image data gets convert to, say scRGB, processing take >> places, and on export >> data may be converted to a different color space, if necessary. > > This would be ridiculous - by misinterpreting the device dependent colors > you > would be applying visual adjustments that differ between images, rather > than > being the same. The fact that you have applied uniform changes to the > device > values is not what you want, since the device values have different > meanings > for different device colorspaces. > I think it is important to remember that these visual adjustments that we are applying are really just abstract mathematical formulas that we find visually useful. In some cases this is quite explicit (eg the multiply blend mode), and sometimes we try to hide this (eg contrast). The contrast tool does not add contrast to an image. The contrast tool runs the image through a particular mathematical formula. For every image where running an image through this formula results in an image with more apparent contrast I can show you an image where that formula will result in image with less apparent contrast. Device independent color space or not. That being said - the contrast tool could benefit from being color space aware. What is important is that the result of all this math is accurately displayed on screen in a timely manner. Running every blending layer and adjustment through a CMS is counterproductive to this end. I think there is a role to play for device independent color adjustments, but they are the exception, not the rule. If you need all your tools to be more consistent between images, then you can convert all your images to the same profile. > Graeme Gill. > _______________________________________________ > Gimp-developer mailing list > Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx > https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer > _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
