Hello! I spent the Christmas break writing a color grading and correction filter for CV named Blue Banana. A few people on IRC have been trying it out for about two weeks, and I think it's more or less ready for a wider audience. I've put some effort into balancing the techniques used to give intuitive, measured results rather than just tossing some basic equations behind a stick-figure UI.
Blue Banana offers slider-based range and non-linear (gamma) adjustment for red, green, blue, hue, saturation and value. It provides feedback both through the compositor window and realtime color histograms embedded in each adjustment slider. It can operate on the entire frame, select specific subset of colors, the current masked region, or a combination of a selection and a mask. It is also able to highlight the selected region with a marching zebra. Screenshot: http://people.xiph.org/~xiphmont/blue_banana_builds/bluebanana-20130108.png The plugin should work on any CinelerraCV 2.x version, including latest master and my experimental branch. It will *not* work with the HV version. I hope to have some quickstart docs up in the next few days. Anyone who wants to try it out quickly can grab a prebuilt plugin: http://people.xiph.org/~xiphmont/blue_banana_builds/LATEST ... is a link to a tar.gz file containing the plugin .so. Simply place the bluebanana.so file into your Cinelerra library directory (eg, /usr/local/lib/cinelerra for those of you who have previously built from source, or /usr/lib/cinelerra, /usr/lib32/cinelerra, or /usr/lib64/cinelerra depending on your distro). Restart CinelerraCV and it should be there. For those who prefer to build from source, it currently lives in git at: https://git.xiph.org/?p=users/xiphmont/bluebanana.git;a=summary The source expects to be added in a new plugin subdirectory under plugins/ in an existing CinelerraCV checkout. The subdir will also need to be added to plugins/Makefile.am. Einar-- again, sorry, my non-Cinelerra-compliant indent style. I'll find a reformatter eventually, I promise. :-) I also intend to port the three-way-color correction filter from HV in a bit if no one else gets to it. Cheers, Monty _______________________________________________ Cinelerra mailing list [email protected] https://lists.skolelinux.org/listinfo/cinelerra
