I had composed a response, and then shortly before sending, WIFI on my laptop conked out. I think yahvuu covered most of what I was going to say, though. I'll send it anyway when I pull the laptop out again. --xsdg On 02/10/2010 07:09 PM, yahvuu wrote: > Martin Nordholts wrote: >> On 02/07/2010 04:55 AM, Omari Stephens wrote: >> "1) When an image is opened with no associated color profile, we assume >> that it is encoded in sRGB space." >> >> I don't think we should assume that, do you have an example use case >> where that is a good idea? > > I think the best guess is sRGB, assuming a file that was produced by a legacy device. > Which were (back then) to be viewed on monitors with a profile similar to sRGB. > > Another source for images of these kind are web developers who want to > achieve consistent colors cross a web page -- the rationale beeing: > if the browser has no color profile information, the colors may be wrong, > but at least consistent. > > Among garden-variety photo labs, it's pretty much standard to discard any > color profile information and just assume sRGB. > > >> I think we should rather assume the image is in the working space color >> space. > > The user's choice of a working space does not reveal any information about > an unknown image. I don't think the chosen working space should be > used as input for import heuristics. > >> My thinking is that it is the same working space color profile >> that is used for the GIMP color picker and also for images without a >> color profile attached. So when you pick RGB 128,128,128 in the GIMP >> color picker and open an image with no color profile, RGB 128, 128, 128 >> in the image will be displayed the same as RGB 128,128,128 in the GIMP >> color picker. > > OK, the color picker's colors must match, of course. Probably that means > that the color picker can't show any numbers as long it's not yet clear > which color space it will be assigned to. > Or, perhaps better: the color picker gets disabled when no image is open. > > But the same problem still occurs when switching between images with > different working color spaces. The very same color may have different > RGB values in different color spaces. Assuming a calibrated monitor, > the color picker displays absolute colors, so i think the RGB values > should change, not the colors. > > > regards, > yahvuu > > _______________________________________________ > 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
