libdcp/src/colour_conversion.cc, branch imf DCP handling library https://git.carlh.net/cgit/libdcp/atom?h=imf 2015-06-29T22:40:29Z Return to DCP-o-matic v1's gamma correction for Rec 601/709. 2015-06-29T22:40:29Z Carl Hetherington cth@carlh.net 2015-06-29T22:40:29Z urn:sha1:5769392a51631355fff96854911700b85d98eae5 Dennis points out that `there definitely *is* no right answer for BT.709 gamma' and `your formula [the DCP-o-matic v2 gamma function before this commmit] is what I'm calling the inverse of the BT.709 camera transfer function. The EBU would not have bothered to write: "Therefore the monitor gamma is not, and never has been, the inverse of the camera gamma." if no-one ever thought of using it'. At least the 2.2 gamma of v1 should not surprise anybody. No-op: whitespace. 2015-06-24T00:06:04Z Carl Hetherington cth@carlh.net 2015-06-24T00:06:04Z urn:sha1:9e523d8a4062ad52330dff6c2ba50e54184c9bb2 Add p3_to_xyz colour conversion preset. 2015-04-22T14:56:56Z Carl Hetherington cth@carlh.net 2015-04-22T14:56:56Z urn:sha1:fa1dddf081a35fde2479f6a23088b608ee956437 Fix crash in previous. 2015-04-22T13:01:19Z Carl Hetherington cth@carlh.net 2015-04-22T13:01:19Z urn:sha1:7ff5a08960fc0d8ab10ce9b0d79e677000cd07e0 Express colour conversions as chromaticities and adjust so that 2015-04-22T12:58:16Z Carl Hetherington cth@carlh.net 2015-04-22T12:58:16Z urn:sha1:86bfdeb77f55b379302a65b22f57fc0583ec6b3c everything is specified as something_to_xyz and then you can get an inverse LUT if you want one. Use 2.222222 for the power in the modified Rec. 709 input gamma 2015-02-17T20:03:30Z Carl Hetherington cth@carlh.net 2015-02-17T20:03:30Z urn:sha1:e94c6239d1a88c5a6d2b6eef7fb0f5fc28cb8777 correction, as per fnordware DCIconverter. Rec 709 -> XYZ and sRGB -> XYZ matrices are, it seems, the same; 2015-02-17T19:57:28Z Carl Hetherington cth@carlh.net 2015-02-17T19:57:28Z urn:sha1:4f68d50abb5a83628482fd166e40f3b4b281166b I'm getting this from fnordware DCIconverter. https://github.com/fnordware/DCIconverter/blob/master/src/DCIconverter.cpp Typo causing wrong matrix to be used for Rec. 709. 2015-02-17T19:42:22Z Carl Hetherington cth@carlh.net 2015-02-17T19:42:22Z urn:sha1:1e7e40ffb6e3632b65adb8372dc073106e3d4023 Try to fix static initialisation order problems. 2015-01-04T13:54:15Z Carl Hetherington cth@carlh.net 2015-01-04T13:54:15Z urn:sha1:c2018e0dae9ed2503b6244a47524a7ce16eedb0b Various fixes to XYZ/RGB transforms. 2015-01-03T21:33:30Z Carl Hetherington cth@carlh.net 2015-01-03T21:33:30Z urn:sha1:9655ed4740f08899698052f232256fcf7b77c58e