Open Source Computer Vision Library https://opencv.org/
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Alexander Alekhin 4fb0541916 Merge remote-tracking branch 'upstream/3.4' into merge-3.4 8 months ago
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carotene Merge pull request #24271 from Kumataro:fix24163 12 months ago
cpufeatures Merge remote-tracking branch 'upstream/3.4' into merge-3.4 4 years ago
ffmpeg ffmpeg/4.x: update FFmpeg wrapper 2023.12 12 months ago
flatbuffers Update FlatBuffers source code to 23.5.9 2 years ago
include speed up vulkan dnn, and support ios and apple m1 chip. (#23349) 2 years ago
ippicv Merge remote-tracking branch 'upstream/3.4' into merge-3.4 8 months ago
ittnotify Merge pull request #21937 from Kumataro:4.x-fix-21911 3 years ago
libjasper Fixed typo. 9 months ago
libjpeg Merge pull request #25092 from klatism:libjpeg-upgrade 8 months ago
libjpeg-turbo Fixed jpeg-turbo diagnostics and build options in default configuration. 8 months ago
libpng Warning supression fix for XCode 13.1 and newer. Backport #23203 2 years ago
libspng Update 3rdparty libspng to 0.7.4 12 months ago
libtiff Merge pull request #25257 from Kumataro:fix25256 8 months ago
libtim-vx Merge pull request #21036 from fengyuentau:timvx_backend_support 3 years ago
libwebp Merge pull request #24274 from vrabaud:webp_1.3.2 1 year ago
openexr fix warning in Clang 10 1 year ago
openjpeg Merge pull request #24205 from PeterJohnson:fix-msvc-arm64 1 year ago
openvx Merge remote-tracking branch 'upstream/3.4' into merge-3.4 3 years ago
orbbecsdk fix download file hash value mismatch issue 8 months ago
protobuf Merge pull request #23109 from seanm:misc-warnings 1 year ago
quirc fix_warnings_quirc 2 years ago
tbb Fixed lcense and readme filenames after TBB update 9 months ago
zlib Merge pull request #25123 from klatism:zlib-upgrade 9 months ago
.gitattributes Disabled whitespace checking for 3rdparty. 11 years ago
readme.txt 3rdparty: update libtiff URLs 12 months ago

readme.txt

This folder contains libraries and headers of a few very popular still image codecs
used by imgcodecs module.
The libraries and headers are preferably to build Win32 and Win64 versions of OpenCV.
On UNIX systems all the libraries are automatically detected by configure script.
In order to use these versions of libraries instead of system ones on UNIX systems you
should use BUILD_<library_name> CMake flags (for example, BUILD_PNG for the libpng library).

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libjpeg (deprecated) The Independent JPEG Group's JPEG software.
Copyright (C) 1991-2012, Thomas G. Lane, Guido Vollbeding.
See IGJ home page http://www.ijg.org
for details and links to the source code

libjpeg-turbo libjpeg-turbo is covered by three compatible BSD-style open source licenses.
Refer to [LICENSE.md](libjpeg-turbo/LICENSE.md) for a roll-up of license terms.

Site: https://github.com/libjpeg-turbo/libjpeg-turbo
API is compatible with original libjpeg.

WITH_JPEG CMake option must be ON to add libjpeg or libjpeg-turbo support to imgcodecs.
BUILD_JPEG=ON selects libjpeg-turbo by default (since OpenCV 3.4.2).
Enable BUILD_JPEG_TURBO_DISABLE=ON to force using of libjpeg (this option is removed in OpenCV 4.0).
SIMD instructions are enabled by default. Use ENABLE_LIBJPEG_TURBO_SIMD to control SIMD instructions.
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libpng Portable Network Graphics library.
The license and copyright notes can be found in libpng/LICENSE.
See libpng home page http://www.libpng.org
for details and links to the source code

WITH_PNG CMake option must be ON to add libpng support to imgcodecs.

libspng Portable Network Graphics library.
The license and copyright notes can be found in libspng/LICENSE.
See libspng home page https://libspng.org
for details and links to the source code

WITH_SPNG CMake option must be ON to add libspng support to imgcodecs
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libtiff Tag Image File Format (TIFF) Software
Copyright (c) 1988-1997 Sam Leffler
Copyright (c) 1991-1997 Silicon Graphics, Inc.
See libtiff home page #1 http://www.simplesystems.org/libtiff/
#2 https://libtiff.gitlab.io/libtiff/
for details and links to the source code

WITH_TIFF CMake option must be ON to add libtiff & zlib support to imgcodecs.
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zlib General purpose LZ77 compression library
Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler.
See zlib home page http://www.zlib.net
for details and links to the source code
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jasper JasPer is a collection of software
(i.e., a library and application programs) for the coding
and manipulation of images. This software can handle image data in a
variety of formats. One such format supported by JasPer is the JPEG-2000
format defined in ISO/IEC 15444-1.

Copyright (c) 1999-2000 Image Power, Inc.
Copyright (c) 1999-2000 The University of British Columbia
Copyright (c) 2001-2003 Michael David Adams

See JasPer official GitHub repository
https://github.com/jasper-software/jasper.git
for details and links to source code
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openexr OpenEXR is a high dynamic-range (HDR) image file format developed
by Industrial Light & Magic for use in computer imaging applications.

Copyright (c) 2006, Industrial Light & Magic, a division of Lucasfilm
Entertainment Company Ltd. Portions contributed and copyright held by
others as indicated. All rights reserved.

The project homepage: http://www.openexr.com
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ffmpeg FFmpeg is a complete, cross-platform solution to record,
convert and stream audio and video. It includes libavcodec -
the leading audio/video codec library, and also libavformat, libavutils and
other helper libraries that are used by OpenCV (in videoio module) to
read and write video files.

Copyright (c) 2001 Fabrice Bellard

The project homepage: http://ffmpeg.org/.

* On Linux/OSX we link user-installed ffmpeg (or ffmpeg fork libav).
* On Windows we use pre-built ffmpeg binaries,
see opencv/3rdparty/ffmpeg/readme.txt for details and licensing information
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