Re: [darktable-user] Anyone know where to find a cie/it8 file for the Color Checker Passport?
That did it, thanks! On 02/28/2018 02:53 AM, Tobias Ellinghaus wrote: Am Mittwoch, 28. Februar 2018, 11:12:57 CET schrieb Tobias Ellinghaus: Am Mittwoch, 28. Februar 2018, 04:46:26 CET schrieb Robert Bieber: I'm curious if anyone's had any luck building a profile with dt-chart using a cie/it8 file for the second step in the process. I've gotten it to work successfully by using the chart file that ships with Argyll, but if I try to use the corresponding cie file for the next step, I get an error message "error with the IT8 file, can't find the SAMPLE_ID column." I'm guessing that even though the option says cie/it8 file, maybe only it8 files are well supported? Or maybe the one that Argyll ships with is just malformed. Does anyone have an idea where I might find a usable it8 file for the ColorChecker passport? This seems like something that should be prominently published by the manufacturer, but the only place I was able to find cht and cie files at all was in the Argyll distribution The file ColorCheckerPassport.cie as shipped by Argyll uses "SAMPLE_LOC" instead of "SAMPLE_ID" to refer to the colors. Just changing the line SAMPLE_LOC XYZ_X XYZ_Y XYZ_Z LAB_L LAB_A LAB_B to SAMPLE_ID XYZ_X XYZ_Y XYZ_Z LAB_L LAB_A LAB_B made it work for me. At least darktable-chart no longer complained. That being said, the Lab values dt-chart computes from the XYZ reference numbers look off to me. I'll have a look. I had a look. It seems that lcms2 fails to properly parse float numbers when the current locale uses anything else than '.' as the decimal separator. So please make sure to run dt-chart with LANG=C. :-( Thanks, Robby Tobias darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
Re: [darktable-user] Anyone know where to find a cie/it8 file for the Color Checker Passport?
Am Mittwoch, 28. Februar 2018, 11:12:57 CET schrieb Tobias Ellinghaus: > Am Mittwoch, 28. Februar 2018, 04:46:26 CET schrieb Robert Bieber: > > I'm curious if anyone's had any luck building a profile with dt-chart > > using a cie/it8 file for the second step in the process. I've gotten it > > to work successfully by using the chart file that ships with Argyll, but > > if I try to use the corresponding cie file for the next step, I get an > > error message "error with the IT8 file, can't find the SAMPLE_ID column." > > > > I'm guessing that even though the option says cie/it8 file, maybe only > > it8 files are well supported? Or maybe the one that Argyll ships with > > is just malformed. Does anyone have an idea where I might find a usable > > it8 file for the ColorChecker passport? This seems like something that > > should be prominently published by the manufacturer, but the only place > > I was able to find cht and cie files at all was in the Argyll distribution > > The file ColorCheckerPassport.cie as shipped by Argyll uses "SAMPLE_LOC" > instead of "SAMPLE_ID" to refer to the colors. Just changing the line > > SAMPLE_LOC XYZ_X XYZ_Y XYZ_Z LAB_L LAB_A LAB_B > > to > > SAMPLE_ID XYZ_X XYZ_Y XYZ_Z LAB_L LAB_A LAB_B > > made it work for me. At least darktable-chart no longer complained. That > being said, the Lab values dt-chart computes from the XYZ reference numbers > look off to me. I'll have a look. I had a look. It seems that lcms2 fails to properly parse float numbers when the current locale uses anything else than '.' as the decimal separator. So please make sure to run dt-chart with LANG=C. :-( > > Thanks, > > Robby > > Tobias signature.asc Description: This is a digitally signed message part.
Re: [darktable-user] Anyone know where to find a cie/it8 file for the Color Checker Passport?
Am Mittwoch, 28. Februar 2018, 04:46:26 CET schrieb Robert Bieber: > I'm curious if anyone's had any luck building a profile with dt-chart > using a cie/it8 file for the second step in the process. I've gotten it > to work successfully by using the chart file that ships with Argyll, but > if I try to use the corresponding cie file for the next step, I get an > error message "error with the IT8 file, can't find the SAMPLE_ID column." > > I'm guessing that even though the option says cie/it8 file, maybe only > it8 files are well supported? Or maybe the one that Argyll ships with > is just malformed. Does anyone have an idea where I might find a usable > it8 file for the ColorChecker passport? This seems like something that > should be prominently published by the manufacturer, but the only place > I was able to find cht and cie files at all was in the Argyll distribution The file ColorCheckerPassport.cie as shipped by Argyll uses "SAMPLE_LOC" instead of "SAMPLE_ID" to refer to the colors. Just changing the line SAMPLE_LOC XYZ_X XYZ_Y XYZ_Z LAB_L LAB_A LAB_B to SAMPLE_ID XYZ_X XYZ_Y XYZ_Z LAB_L LAB_A LAB_B made it work for me. At least darktable-chart no longer complained. That being said, the Lab values dt-chart computes from the XYZ reference numbers look off to me. I'll have a look. > Thanks, > Robby Tobias signature.asc Description: This is a digitally signed message part.
