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This folder contains libraries and headers of a few very popular still image codecs
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used by imgcodecs module.
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The libraries and headers are preferably to build Win32 and Win64 versions of OpenCV.
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On UNIX systems all the libraries are automatically detected by configure script.
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In order to use these versions of libraries instead of system ones on UNIX systems you
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should use BUILD_<library_name> CMake flags (for example, BUILD_PNG for the libpng library).
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------------------------------------------------------------------------------------
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libjpeg (deprecated) The Independent JPEG Group's JPEG software.
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Copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding.
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See IGJ home page http://www.ijg.org
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for details and links to the source code
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libjpeg-turbo libjpeg-turbo is covered by three compatible BSD-style open source licenses.
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Refer to [LICENSE.md](libjpeg-turbo/LICENSE.md) for a roll-up of license terms.
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Site: https://github.com/libjpeg-turbo/libjpeg-turbo
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API is compatible with original libjpeg.
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WITH_JPEG CMake option must be ON to add libjpeg or libjpeg-turbo support to imgcodecs.
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BUILD_JPEG=ON selects libjpeg-turbo by default (since OpenCV 3.4.2).
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Enable BUILD_JPEG_TURBO_DISABLE=ON to force using of libjpeg (this option is removed in OpenCV 4.0).
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------------------------------------------------------------------------------------
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libpng Portable Network Graphics library.
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The license and copyright notes can be found in libpng/LICENSE.
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See libpng home page http://www.libpng.org
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for details and links to the source code
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WITH_PNG CMake option must be ON to add libpng support to imgcodecs.
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------------------------------------------------------------------------------------
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libtiff Tag Image File Format (TIFF) Software
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Copyright (c) 1988-1997 Sam Leffler
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Copyright (c) 1991-1997 Silicon Graphics, Inc.
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See libtiff home page http://www.libtiff.org/
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for details and links to the source code
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WITH_TIFF CMake option must be ON to add libtiff & zlib support to imgcodecs.
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------------------------------------------------------------------------------------
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zlib General purpose LZ77 compression library
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Copyright (C) 1995-2012 Jean-loup Gailly and Mark Adler.
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See zlib home page http://www.zlib.net
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for details and links to the source code
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------------------------------------------------------------------------------------
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jasper JasPer is a collection of software
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(i.e., a library and application programs) for the coding
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and manipulation of images. This software can handle image data in a
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variety of formats. One such format supported by JasPer is the JPEG-2000
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format defined in ISO/IEC 15444-1.
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Copyright (c) 1999-2000 Image Power, Inc.
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Copyright (c) 1999-2000 The University of British Columbia
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Copyright (c) 2001-2003 Michael David Adams
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See JasPer official GitHub repository
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https://github.com/jasper-software/jasper.git
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for details and links to source code
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------------------------------------------------------------------------------------
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openexr OpenEXR is a high dynamic-range (HDR) image file format developed
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by Industrial Light & Magic for use in computer imaging applications.
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Copyright (c) 2006, Industrial Light & Magic, a division of Lucasfilm
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Entertainment Company Ltd. Portions contributed and copyright held by
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others as indicated. All rights reserved.
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The project homepage: http://www.openexr.com
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------------------------------------------------------------------------------------
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ffmpeg FFmpeg is a complete, cross-platform solution to record,
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convert and stream audio and video. It includes libavcodec -
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the leading audio/video codec library, and also libavformat, libavutils and
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other helper libraries that are used by OpenCV (in videoio module) to
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read and write video files.
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Copyright (c) 2001 Fabrice Bellard
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The project homepage: http://ffmpeg.org/.
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* On Linux/OSX we link user-installed ffmpeg (or ffmpeg fork libav).
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* On Windows we use pre-built ffmpeg binaries,
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see opencv/3rdparty/ffmpeg/readme.txt for details and licensing information
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------------------------------------------------------------------------------------
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