Mikhail Matrosov wrote: Hi, > I wonder, whether it is a tool in argyll, which allows to generate a > synthetic image of a chart, given its description in .cht, .cie, or other > formats? Images like these: > http://www.babelcolor.com/main_level/ColorChecker.htm#ColorChecker_images Not at present. It's an interesting idea though. For an x,y reader (like the spectroscan) it would be useful to use .cht like information to locate the patches, but the print and scan sides of Argyll aren't that well integrated at the moment. > For now I manually parse .cht file for layout of color patches and > reference XYZ colors, and drow it myself in Matlab. Is there a simpler way? A lot of the nessesary logic is in scanin. I guess it could be modified to do this. > And, by the way, why colors in .cht file are just approximates and one need > .cie file to run colprof? Wouldn't it be simpler just to include reference > colors in the same .cht file? Because a .cht defines chart layout for recognition purposes, while the reference values depend on the chart instance. So the same .cht can be used with any number of different manufacturers or instances of (say) an IT8/7 chart, while (ideally) each one needs a different set of reference values. Graeme Gill.