Hi, I have experimented with an IT8.7 calibration target for building scene-specific color profiles. The results are good, but the workflow could be quicker.
My workflow so far: I am using an IT8.7 target from targets.coloraid.de, model C1. - Take a picture of the scene with the calibration target. Too much noise can keep argyll from detecting the target, but the exposure may be corrected afterwards (even +1,25 stops in my case). - Crop the target, export as TIFF and generate ICC profile as described here: https://encrypted.pcode.nl/blog/2010/06/28/darktable-camera-color-profiling/ - Create a preset from the custom whitebalance used for the TIFF export - apply ICC profile and custom whitebalance to all pictures taken under the same lighting conditions The result works definitely better than a simple whitebalance. Eg under an "energy-saving" fluorescent bulb, a whitebalance on a greycard alone can't fully remove the greenish-yellowish cast. But the result using the ICC profile looks natural, like overcast daylight. Now I am looking for a way to speed up the process. Any tips? (Ideally, I would like to use a script, so that I can simply crop the calibration picture to size and then select an action that creates the ICC profile, copies it to my .config/darktable, creates the whitebalance, and creates a style that enables both the ICC profile and the whitebalance. Then I could apply this style to all images that fit. But that's just an idea...) Cheers Michael ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
