It might do something with the fact, that your display uses RGB, but some images can be stored using CMYK or different color representations. To recalculate these representations to RGB with the respect to capabilities of your output device (to map the colors as precisely as possible) the application should have some information about the output device - therefore it may use the ICM profile for that.
I have visited the web page http://www.color.org/version4html.xalter with and without ICM profile loaded into Firefox and the difference was shocking. In both cases the display was calibrated.
David H. Vree napsal(a):
Personally, I would love to see/contribute to a wiki. I've been in the field of computer science my whole life, and I find the subject of color management incredibly complicated & confusing.I still don't *really* understand why we need color management in the applications when Argyll loads the created profile into the video card!edmund ronald wrote:Maybe we need a FAQ or a Wiki? I don't know whether the fact that we get so few questions is encouraging or discouraging. 2009/4/8 Karel Lemr <lemr@xxxxxxxxxxxxxx>:Hello all, I am new to ArgyllCMS. I've just bought a Eye-One colorimeter. I have successfully calibrated my LCD monitor using the dispcal utility. I have just a few simple questions which I haven't found any satisfactory answer to yet. 1. How can I measure the ambient light color temperature? I've tried using spotread, but the measured values are a bit weird. They show the color temperature about 3000K which seams too low for daylight. 2. Is there any recommended procedure to verify that the monitor is well calibrated? E.g. to verify that I have used the calibration device and ArgyllCMS well. 3. What is the meaning of "ICC aware application"? I thought that if the display is well tuned, all colors look like they should. How can that depend on the specific application (web browser, image editor, ...) I would be extremely happy if someone finds the time to answer my newcomer questions. Have a nice day. Karel