opencv4 v4.10.0
- Created
- Updated
computer vision library
# License
Apache-2.0
# Supported Platforms
All platforms are supported
# Features
Default features: directml
, dnn
, dshow
, gapi
, gtk
, msmf
, win32ui
, calib3d
, fs
, highgui
, intrinsics
, jpeg
, png
, quirc
, thread
, tiff
, webp
# ade
graph api
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by ade )
- vcpkg-cmake-config (by ade )
# calib3d default
calib3d module
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# carotene
carotene module
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# contrib
opencv_contrib module
Dependencies:
hdf5
Platforms:
!uwp & !(windows & (arm | arm64)) & !ios
opencv4
Features:
calib3d
tesseract
Platforms:
!uwp & !(windows & (arm | arm64)) & !ios
and 12 transitive dependencies:
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by hdf5 )
- vcpkg-cmake-config (by hdf5 )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
# cuda
CUDA support for opencv
Dependencies:
and 14 transitive dependencies:
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by hdf5 )
- vcpkg-cmake-config (by hdf5 )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
# cudnn
cuDNN support for opencv
Dependencies:
and 15 transitive dependencies:
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by hdf5 )
- vcpkg-cmake-config (by hdf5 )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
# dc1394
Dc1394 support for opencv
Host Dependencies:
6 transitive dependencies:
- pkgconf (by vcpkg-pkgconfig-get-modules )
- vcpkg-cmake (by vcpkg-cmake-get-vars )
- vcpkg-cmake-get-vars (by vcpkg-msbuild )
vcpkg-msbuild (by libusb )
Platforms:
windows & !mingw
- vcpkg-pkgconfig-get-modules (by vcpkg-msbuild )
- vcpkg-tool-meson (by pkgconf )
# directml
Build with DirectML support
Supports: windows & !uwp & !mingw
- ✅ windows
- ❌
linux - ❌
osx - ❌
uwp
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# dnn
Enable dnn module
Supports: !android
- ✅ linux
- ✅ osx
- ✅ uwp
- ✅ windows
Dependencies:
and 2 transitive dependencies:
- abseil (by protobuf )
- utf8-range (by protobuf )
Host Dependencies:
flatbuffers
Features: (none)
and 2 transitive dependencies:
- vcpkg-cmake (by flatbuffers )
- vcpkg-cmake-config (by flatbuffers )
# dnn-cuda
Build dnn module with CUDA support
Dependencies:
opencv4
Features:
cudnn
,dnn
and 20 transitive dependencies:
- abseil (by protobuf )
cpu-features (by tesseract )
Platforms:
android
- cuda (by cudnn )
- cudnn (by opencv4 )
- flatbuffers (by opencv4 )
- giflib (by leptonica )
- leptonica (by tesseract )
- libaec (by hdf5 )
libarchive (by tesseract )
Features: (none)
- libjpeg-turbo (by leptonica )
- libpng (by leptonica )
- openjpeg (by leptonica )
- protobuf (by opencv4 )
- utf8-range (by protobuf )
- zlib (by hdf5 )
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by hdf5 )
- vcpkg-cmake-config (by hdf5 )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
# dshow
Enable DirectShow
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# eigen
Eigen support for opencv
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by eigen3 )
- vcpkg-cmake-config (by eigen3 )
# ffmpeg
ffmpeg support for opencv
Host Dependencies:
5 transitive dependencies:
# freetype
Freetype support for opencv
Dependencies:
and 3 transitive dependencies:
- gettext-libintl (by gettext )
libiconv (by gettext-libintl )
Platforms:
!linux
Host Dependencies:
5 transitive dependencies:
- vcpkg-cmake (by freetype )
- vcpkg-cmake-config (by freetype )
- vcpkg-cmake-get-vars (by vcpkg-make )
- vcpkg-make (by gettext-libintl )
- vcpkg-tool-meson (by harfbuzz )
# fs default
Enable filesystem support
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# gapi
Enable gapi module
Supports: !uwp
- ✅ linux
- ✅ osx
- ✅ windows
- ❌
uwp
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# gdcm
GDCM support for opencv
# gstreamer
gstreamer support for opencv
Dependencies:
gstreamer
Features:
plugins-base
and 10 transitive dependencies:
- dirent (by glib )
- egl-registry (by opengl-registry )
- gettext-libintl (by glib )
- glib (by gstreamer )
- libffi (by glib )
libiconv (by gettext-libintl )
Platforms:
!linux
- opengl-registry (by opengl )
- zlib (by glib )
Host Dependencies:
6 transitive dependencies:
- vcpkg-cmake (by vcpkg-cmake-get-vars )
- vcpkg-cmake-config (by pcre2 )
- vcpkg-cmake-get-vars (by vcpkg-make )
- vcpkg-make (by gettext-libintl )
- vcpkg-tool-meson (by glib )
# gtk
GTK support for opencv
Supports: !windows & !osx & !ios & !android
- ✅ linux
- ✅ uwp
- ❌
osx - ❌
windows
Dependencies:
gtk3
Features: (none)
and 39 transitive dependencies:
at-spi2-atk (by gtk3 )
Platforms:
linux
- at-spi2-core (by at-spi2-atk )
- atk (by at-spi2-atk )
- brotli (by freetype )
- bzip2 (by freetype )
dbus (by at-spi2-core )
Platforms:
linux
- dirent (by glib )
egl-registry (by libepoxy )
Platforms:
!osx & !windows
- expat (by dbus )
- fontconfig (by cairo )
freetype (by fontconfig , harfbuzz , pango )
Features:
brotli
,bzip2
,png
,zlib
- fribidi (by pango )
- gdk-pixbuf (by gtk3 )
- gettext (by atk )
- gettext-libintl (by glib )
- glib (by at-spi2-core )
- libcap (by libsystemd )
- libepoxy (by gtk3 )
- libffi (by glib )
libiconv (by gettext-libintl )
Platforms:
!linux
- libjpeg-turbo (by gdk-pixbuf )
- liblzma (by libsystemd )
- libmount (by libsystemd )
- libpng (by cairo )
libsystemd (by dbus )
Platforms:
linux
libuuid (by fontconfig )
Platforms:
!osx & !windows
- libxcrypt (by libsystemd )
- libxml2 (by at-spi2-atk )
- lz4 (by libsystemd )
- pango (by gtk3 )
- pixman (by cairo )
- pthread (by cairo )
- pthreads (by pthread )
tiff (by gdk-pixbuf )
Features: (none)
- zlib (by glib )
- zstd (by libsystemd )
Host Dependencies:
6 transitive dependencies:
- gperf (by libsystemd )
- vcpkg-cmake (by expat )
- vcpkg-cmake-config (by expat )
- vcpkg-cmake-get-vars (by libcap )
- vcpkg-make (by gettext-libintl )
- vcpkg-tool-meson (by libsystemd )
# halide
Halide support for opencv
Dependencies:
- halide
opencv4
Features: (none)
opencv4
Features:
calib3d
,directml
,dnn
,dshow
,fs
,gapi
,gtk
,highgui
,intrinsics
,jpeg
,msmf
,png
,quirc
,thread
,tiff
,webp
,win32ui
and 48 transitive dependencies:
- abseil (by protobuf )
at-spi2-atk (by gtk3 )
Platforms:
linux
- at-spi2-core (by at-spi2-atk )
- atk (by at-spi2-atk )
- brotli (by freetype )
- bzip2 (by freetype )
dbus (by at-spi2-core )
Platforms:
linux
- dirent (by glib )
egl-registry (by libepoxy )
Platforms:
!osx & !windows
- expat (by dbus )
- flatbuffers (by opencv4 )
- fontconfig (by cairo )
freetype (by fontconfig , harfbuzz , pango )
Features:
brotli
,bzip2
,png
,zlib
- fribidi (by pango )
- gdk-pixbuf (by gtk3 )
- gettext (by atk )
- gettext-libintl (by glib )
- glib (by at-spi2-core )
- libcap (by libsystemd )
- libepoxy (by gtk3 )
- libffi (by glib )
libiconv (by gettext-libintl )
Platforms:
!linux
- libjpeg-turbo (by gdk-pixbuf )
- liblzma (by libsystemd )
- libmount (by libsystemd )
- libpng (by cairo )
libsystemd (by dbus )
Platforms:
linux
libuuid (by fontconfig )
Platforms:
!osx & !windows
- libxcrypt (by libsystemd )
- libxml2 (by at-spi2-atk )
- lz4 (by libsystemd )
- pango (by gtk3 )
- pixman (by cairo )
- protobuf (by opencv4 )
- pthread (by cairo )
- pthreads (by pthread )
- quirc (by opencv4 )
tiff (by gdk-pixbuf )
Features: (none)
- utf8-range (by protobuf )
- zlib (by glib )
- zstd (by libsystemd )
Host Dependencies:
6 transitive dependencies:
- gperf (by libsystemd )
- vcpkg-cmake (by llvm )
- vcpkg-cmake-config (by llvm )
- vcpkg-cmake-get-vars (by llvm )
- vcpkg-make (by gettext-libintl )
- vcpkg-tool-meson (by libsystemd )
# highgui default
highgui module
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# intrinsics default
Enable intrinsics
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# ipp
Enable Intel Integrated Performance Primitives
Supports: (osx & x64) | (windows & (x64 | x86)) | (linux & (x64 | x86))
- ✅ linux
- ✅ osx
- ✅ windows-x64
- ✅ windows-x86
- ❌
uwp - ❌
windows-arm64
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# jasper
JPEG 2000 support for opencv (deprecated)
Dependencies:
and 5 transitive dependencies:
- egl-registry (by opengl-registry )
- libjpeg-turbo (by jasper )
- opengl (by freeglut )
- opengl-registry (by opengl )
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by libjpeg-turbo )
- vcpkg-cmake-config (by libjpeg-turbo )
# jpeg default
JPEG support for opencv
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by libjpeg-turbo )
- vcpkg-cmake-config (by libjpeg-turbo )
# msmf
Microsoft Media Foundation support for opencv
Supports: windows & !uwp & !mingw
- ✅ windows
- ❌
linux - ❌
osx - ❌
uwp
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# nonfree
allow nonfree and unredistributable libraries
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# opencl
Enable opencl support
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by opencl )
- vcpkg-cmake-config (by opencl )
# openexr
OpenEXR support for opencv
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by imath )
- vcpkg-cmake-config (by imath )
# opengl
opengl support for opencv
Dependencies:
and 2 transitive dependencies:
- egl-registry (by opengl-registry )
- opengl-registry (by opengl )
Host Dependencies:
No dependencies.
# openjpeg
JPEG 2000 support for opencv
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by openjpeg )
- vcpkg-cmake-config (by openjpeg )
# openmp
Enable OpenMP support
Supports: !osx
- ✅ linux
- ✅ uwp
- ✅ windows
- ❌
osx
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# openvino
OpenVINO support for OpenCV DNN
Supports: !uwp & !x86
- ✅ linux
- ✅ osx
- ✅ windows-arm64
- ✅ windows-x64
- ❌
uwp - ❌
windows-x86
Dependencies:
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by flatbuffers )
- vcpkg-cmake-config (by flatbuffers )
- vcpkg-get-python-packages (by openvino )
# ovis
opencv_ovis module
Supports: !(windows & static)
- ✅ linux
- ✅ osx
- ✅ uwp
- ✅ windows-dynamic
- ❌
windows-static
Dependencies:
and 39 transitive dependencies:
- assimp (by ogre )
- brotli (by freetype )
- bzip2 (by freetype )
cpu-features (by tesseract )
Platforms:
android
- draco (by assimp )
- expat (by dbus )
- freetype (by imgui , ogre )
- giflib (by leptonica )
- imath (by freeimage )
- jhasse-poly2tri (by assimp )
- jxrlib (by freeimage )
- kubazip (by assimp )
- lcms (by libraw )
- leptonica (by tesseract )
- libaec (by hdf5 )
libarchive (by tesseract )
Features: (none)
- libdeflate (by openexr )
- libjpeg-turbo (by freeimage )
- libpng (by freeimage )
- libraw (by freeimage )
- minizip (by assimp )
- openexr (by freeimage )
- openjpeg (by freeimage )
- polyclipping (by assimp )
- pugixml (by ogre )
- rapidjson (by assimp )
- stb (by ogre )
- utfcpp (by assimp )
- zlib (by ogre )
Host Dependencies:
4 transitive dependencies:
- vcpkg-cmake (by freetype )
- vcpkg-cmake-config (by freetype )
- vcpkg-cmake-get-vars (by minizip )
- vcpkg-tool-meson (by lcms )
# png default
PNG support for opencv
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by libpng )
- vcpkg-cmake-config (by libpng )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
# python
Python wrapper support for opencv
Dependencies:
python3
Features:
extensions
and 11 transitive dependencies:
- gettext-libintl (by gettext )
libiconv (by gettext-libintl )
Platforms:
!linux
- zlib (by python3 )
Host Dependencies:
9 transitive dependencies:
- pkgconf (by vcpkg-pkgconfig-get-modules )
- vcpkg-cmake (by vcpkg-cmake-get-vars )
- vcpkg-cmake-config (by libuuid )
- vcpkg-cmake-get-vars (by vcpkg-make )
- vcpkg-get-python (by python3 )
- vcpkg-make (by gettext-libintl )
vcpkg-msbuild (by python3 )
Platforms:
windows
- vcpkg-pkgconfig-get-modules (by vcpkg-msbuild )
- vcpkg-tool-meson (by pkgconf )
# qt
Qt GUI support for opencv
Dependencies:
and 12 transitive dependencies:
- double-conversion (by qtbase )
- egl-registry (by opengl-registry )
- opengl-registry (by opengl )
qtdeclarative (by qt5compat )
Features: (none)
- qtlanguageserver (by qtdeclarative )
qtshadertools (by qtdeclarative )
Features: (none)
- qtsvg (by qtdeclarative )
- zlib (by qtbase )
Host Dependencies:
4 transitive dependencies:
- vcpkg-cmake (by vcpkg-cmake-get-vars )
- vcpkg-cmake-config (by pcre2 )
- vcpkg-cmake-get-vars (by vcpkg-make )
- vcpkg-make (by libb2 )
# quality
Build opencv_quality module
Supports: !uwp
- ✅ linux
- ✅ osx
- ✅ windows
- ❌
uwp
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by hdf5 )
- vcpkg-cmake-config (by hdf5 )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
# quirc default
Enable QR code module
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by quirc )
- vcpkg-cmake-config (by quirc )
# rgbd
Build opencv_rgbd module
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by hdf5 )
- vcpkg-cmake-config (by hdf5 )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
# sfm
opencv_sfm module
Dependencies:
and 15 transitive dependencies:
Host Dependencies:
3 transitive dependencies:
- vcpkg-cmake (by eigen3 )
- vcpkg-cmake-config (by eigen3 )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
# tbb
Enable Intel Threading Building Blocks
Supports: !static
- ✅ linux-dynamic
- ✅ osx-dynamic
- ✅ uwp-dynamic
- ✅ windows-dynamic
- ❌
linux-static - ❌
osx-static - ❌
uwp-static - ❌
windows-static
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by tbb )
- vcpkg-cmake-config (by tbb )
# thread default
Enable thread support
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# tiff default
TIFF support for opencv
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by tiff )
- vcpkg-cmake-config (by tiff )
# vtk
vtk support for opencv
Dependencies:
opencv4
Features:
calib3d
,contrib
,directml
,dnn
,dshow
,fs
,gapi
,gtk
,highgui
,intrinsics
,jpeg
,msmf
,png
,quirc
,thread
,tiff
,webp
,win32ui
vtk
Features: (none)
and 69 transitive dependencies:
- abseil (by protobuf )
at-spi2-atk (by gtk3 )
Platforms:
linux
- at-spi2-core (by at-spi2-atk )
- atk (by at-spi2-atk )
- brotli (by freetype )
- bzip2 (by freetype )
cpu-features (by tesseract )
Platforms:
android
dbus (by at-spi2-core )
Platforms:
linux
- dirent (by glib )
- double-conversion (by vtk )
egl-registry (by libepoxy )
Platforms:
!osx & !windows
- eigen3 (by vtk )
- expat (by dbus )
- exprtk (by vtk )
- fast-float (by vtk )
- flatbuffers (by opencv4 )
- fmt (by vtk )
- fontconfig (by cairo )
freetype (by fontconfig , harfbuzz , pango , vtk )
Features:
brotli
,bzip2
,png
,zlib
- fribidi (by pango )
- gdk-pixbuf (by gtk3 )
- gettext (by atk )
- gettext-libintl (by glib )
- giflib (by leptonica )
- glew (by vtk )
- glib (by at-spi2-core )
- jsoncpp (by vtk )
- leptonica (by tesseract )
- libaec (by hdf5 )
libarchive (by tesseract )
Features: (none)
- libcap (by libsystemd )
- libepoxy (by gtk3 )
- libffi (by glib )
libiconv (by gettext-libintl )
Platforms:
!linux
- libjpeg-turbo (by leptonica )
- liblzma (by libsystemd )
- libmount (by libsystemd )
- libpng (by leptonica )
libsystemd (by dbus )
Platforms:
linux
libuuid (by fontconfig )
Platforms:
!osx & !windows
- libwebp (by leptonica , libwebp , opencv4 )
- libxcrypt (by libsystemd )
libxml2 (by at-spi2-atk , vtk )
Features:
iconv
,lzma
,zlib
- lz4 (by libsystemd )
- nlohmann-json (by vtk )
- opengl (by glew )
- opengl-registry (by opengl )
- openjpeg (by leptonica )
- pango (by gtk3 )
- pegtl (by vtk )
- pixman (by cairo )
- protobuf (by opencv4 )
- pthread (by cairo )
- pthreads (by pthread )
- pugixml (by vtk )
- quirc (by opencv4 )
- utf8-range (by protobuf )
- utfcpp (by vtk )
- verdict (by vtk )
- zlib (by hdf5 )
- zstd (by libsystemd )
Host Dependencies:
6 transitive dependencies:
- gperf (by libsystemd )
- vcpkg-cmake (by hdf5 )
- vcpkg-cmake-config (by hdf5 )
vcpkg-cmake-get-vars (by libpng )
Platforms:
arm & android
- vcpkg-make (by gettext-libintl )
- vcpkg-tool-meson (by libsystemd )
# vulkan
Vulkan support for opencv dnn
Dependencies:
opencv4
Features:
dnn
and 4 transitive dependencies:
- abseil (by protobuf )
- flatbuffers (by opencv4 )
- protobuf (by opencv4 )
- utf8-range (by protobuf )
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by flatbuffers )
- vcpkg-cmake-config (by flatbuffers )
# webp default
WebP support for opencv
Host Dependencies:
2 transitive dependencies:
- vcpkg-cmake (by libwebp )
- vcpkg-cmake-config (by libwebp )
# win32ui
Enable win32ui
Supports: windows & !uwp
- ✅ windows
- ❌
linux - ❌
osx - ❌
uwp
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# world
Compile to a single package support for opencv
Dependencies:
No dependencies.
Host Dependencies:
No dependencies.
# Dependencies
No transitive dependencies.
# Host Dependencies
No transitive dependencies.
# Dependents
- dv-processing
- libcaer (feature
opencv
) - opencv
- opencv (feature
ade
) - opencv (feature
calib3d
) - opencv (feature
contrib
) - opencv (feature
cuda
) - opencv (feature
cudnn
) - opencv (feature
dc1394
) - opencv (feature
directml
) - opencv (feature
dnn
) - opencv (feature
dnn-cuda
) - opencv (feature
dshow
) - opencv (feature
eigen
) - opencv (feature
ffmpeg
) - opencv (feature
freetype
) - opencv (feature
fs
) - opencv (feature
gapi
) - opencv (feature
gdcm
) - opencv (feature
gstreamer
) - opencv (feature
gtk
) - opencv (feature
halide
) - opencv (feature
highgui
) - opencv (feature
intrinsics
) - opencv (feature
ipp
) - opencv (feature
jasper
) - opencv (feature
jpeg
) - opencv (feature
msmf
) - opencv (feature
nonfree
) - opencv (feature
opencl
) - opencv (feature
openexr
) - opencv (feature
opengl
) - opencv (feature
openjpeg
) - opencv (feature
openmp
) - opencv (feature
openvino
) - opencv (feature
ovis
) - opencv (feature
png
) - opencv (feature
python
) - opencv (feature
qt
) - opencv (feature
quality
) - opencv (feature
quirc
) - opencv (feature
rgbd
) - opencv (feature
sfm
) - opencv (feature
tbb
) - opencv (feature
thread
) - opencv (feature
tiff
) - opencv (feature
vtk
) - opencv (feature
vulkan
) - opencv (feature
webp
) - opencv (feature
win32ui
) - opencv (feature
world
) - opencv4 (feature
contrib
) - opencv4 (feature
cuda
) - opencv4 (feature
cudnn
) - opencv4 (feature
dnn-cuda
) - opencv4 (feature
halide
) - opencv4 (feature
openvino
) - opencv4 (feature
ovis
) - opencv4 (feature
quality
) - opencv4 (feature
rgbd
) - opencv4 (feature
sfm
) - opencv4 (feature
vtk
) - opencv4 (feature
vulkan
)
# Host Dependents
No dependents.
# Contributors
Stefano Sinigardi
Victor Romero
NiHoel
shelper
Don Venable
huangqinjin
Alexander Neumann
ras0219
Matioupi
Fei Chong
Jack·Boos·Yu
Billy O'Neal
NancyLi1013
Phoebe
Carlos O'Ryan
Kai Pastor
Yury Bura
Bobby Reynolds
hh10k
Lily Wang
autoantwort
Russell Greene
Cheney Wang
Cedric GNIEWEK
Matthew Oliver
Xinyu Wang
Paul Skopnik
Ilya Lavrenov
Kyle O'Connor
JonLiu1993
sethome
MonicaLiu
jim wang
Thomas1664
Wentsing Nee
gerard-ryan-immersaview
DownerCase
Davide Pianca
WangWeiLin-MV
# Changelog
and 81 more commits:
999c198
[opencv] add tesseract to fix downstream linking