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CinePaint is an open source computer program for painting and retouching bitmap frames of films.

Friday, June 4, 2010

CinePaint is an open source computer program for painting and retouching bitmap frames of films.

It is a fork of version 1.0.4 of the GNU Image Manipulation Program (GIMP).

It is likely the most successful open source tool in feature motion picture work today. It is free software under the GNU General Public License.

Under its former name Film Gimp, CinePaint was used for films such as Scooby-Doo, Harry Potter and the Philosopher's Stone, The Last Samurai and Stuart Little.

Features that set CinePaint apart from its photo-editing predecessor include the frame manager, onion skinning, and the ability to work with 16-bit and floating point pixels for high dynamic range imaging (HDR). CinePaint supports a 16-bit color managed workflow for photographers and printers, including CIE*Lab and CMYK editing. It supports the Cineon, DPX, and OpenEXR image file formats. HDR creation from bracketed exposures is easy.

CinePaint is available for Linux, BSD, UNIX-like OSes, Mac OS X, and SGI IRIX.

Glasgow, a completely new code architecture being used for CinePaint, is expected to make a new Windows version possible and is currently under production. The Glasgow effort is FLTK based.

CinePaint is a professional open-source raster graphics editor, not a video editor. Per-channel color engine core: 8-bit, 16-bit, and 32-bit. The image formats it supports include BMP, CIN, DPX, EXR, GIF, JPEG, OpenEXR, PNG, TIFF, and XCF. Examples of the software's application in the movie industry include Elf, Looney Tunes: Back in Action, League of Extraordinary Gentlemen, Duplex, The Last Samurai, Showtime, Blue Crush, 2 Fast 2 Furious, the Harry Potter series, Cats & Dogs, Dr. Dolittle 2, Little Nicky, The Grinch, The 6th Day, Stuart Little, Planet of the Apes, Stuart Little 2, and Spider-Man.

The program is available on Linux, OS X, FreeBSD and NetBSD. Its main proprietary competitor is Adobe Photoshop.

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Features.

* display ICC colour correction
* preference dialog for default profiles and conversion behaviour (target for Oyranos integration)
* display / editing / assumed input / proofing profile settings
* profile missmatch behaviour selectable
* ICC 8/16-bit editing and corrected viewing
* 32-bit HDR colour corrected viewing
* CMYK/Lab/CineonLog editing
* Cineon profiles are available as part of the Oyranos project at Oyranos download page (http://www.behrmann.name/index.php?option=com_content&task=view&id=34&Itemid=68#profiles)
* on the fly manipulation (look) profiles assignable and useable for conversion
* film playback with colour correction and effects; slow, needs further improvement
* capablility to show image colours in an 3D colour viewer including various gamuts (3D histogram) - ICC Examin (http://www.behrmann.name/index.php?option=com_content&task=view&id=32&Itemid=70)
* littleCMS is a fixed dependency CMM
* standard paths: /usr/share/color/icc;~/.color/icc + free selectable additional directories
* one proofing profile per loaded image
* ICC print separation dialog uses the proofing profile by default
* for lcms > 1.15 is Cmyk->Cmyk black preserving enabled; non selectable
* OpenEXR <-> ICC conversion roundtripping (solved with lcms on the fly profiles)
* BPC is on by default (v0.20-3)
* Oyranos is the default configurator if available

Investigation.

* 16-bit XYZ editing and displaying
* print dialog needs system wide colour management
* inconsitent colour UI for the legacy Gtk1 version (channel names, alpha handling, partitial colour space specific dialogs)
* automate Cineon -> ICC profile selection; currently manual
* tonemapping
* missed floating point precision colour transforms

Screenshots.








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