AvenSun / OpenCvSlim

Slim Build of OpenCv

OpenCvSlim

• This project provides the slim build of OpenCv library for the Android, Windows and ARM Linux platforms.

• Currently there're binary packages for OpenCv 2.4.13.7 , 3.4.20 and 4.8.1.

Size Details

package	size
OpenCvSlim-2.4.13.7-android.zip (arm64,armeabi,x64,x86)	8.2MB
OpenCvSlim-2.4.13.7-armlinux.zip (aarch64,arm-linux-gnueabi,arm-linux-gnueabihf)	7.9MB
OpenCvSlim-2.4.13.7-ubuntu-2004.zip	2.8MB
OpenCvSlim-2.4.13.7-ubuntu-2204.zip	2.8MB
OpenCvSlim-2.4.13.7-webassembly.zip (basic,simd,simd-threads)	6.2MB
OpenCvSlim-2.4.13.7-win-vs2015.zip (x64,x86)	6.7MB
OpenCvSlim-2.4.13.7-win-vs2017.zip (x64,x86)	6.9MB
OpenCvSlim-2.4.13.7-win-vs2019.zip (x64,x86)	7.5MB
OpenCvSlim-2.4.13.7-win-vs2022.zip (x64,x86)	7.5MB
OpenCvSlim-3.4.20-android.zip (arm64,armeabi,x64,x86)	16.4MB
OpenCvSlim-3.4.20-armlinux.zip (aarch64,arm-linux-gnueabi,arm-linux-gnueabihf)	14.4MB
OpenCvSlim-3.4.20-ubuntu-2004.zip	6.5MB
OpenCvSlim-3.4.20-ubuntu-2204.zip	6.6MB
OpenCvSlim-3.4.20-webassembly.zip (basic,simd,simd-threads)	11.2MB
OpenCvSlim-3.4.20-win-vs2015.zip (x64,x86)	14.8MB
OpenCvSlim-3.4.20-win-vs2017.zip (x64,x86)	15.4MB
OpenCvSlim-3.4.20-win-vs2017.zip (x64,x86)	15.9MB
OpenCvSlim-3.4.20-win-vs2022.zip (x64,x86)	15.9MB
OpenCvSlim-4.8.1-android.zip (arm64,armeabi,x64,x86)	17.7MB
OpenCvSlim-4.8.1-armlinux.zip (aarch64,arm-linux-gnueabi,arm-linux-gnueabihf)	16.1MB
OpenCvSlim-4.8.1-ubuntu-2004.zip	7.1MB
OpenCvSlim-4.8.1-ubuntu-2204.zip	7.1MB
OpenCvSlim-4.8.1-webassembly.zip (basic,simd,simd-threads)	12.5MB
OpenCvSlim-4.8.1-win-vs2015.zip (x64,x86)	17.1MB
OpenCvSlim-4.8.1-win-vs2017.zip (x64,x86)	17.1MB
OpenCvSlim-4.8.1-win-vs2017.zip (x64,x86)	18.4MB
OpenCvSlim-4.8.1-win-vs2022.zip (x64,x86)	18.4MB

Tips

• The OpenCvSlim only build basic OpenCv operators and common image processing functions.

• cv::imread and cv::imwrite are reimplemented using stb for smaller size.

Modules included

module	note
opencv_core	Mat, matrix operations ...
opencv_imgproc	resize, cvtColor, warpAffine, HoughLines, erode ...
opencv_highgui	imread, imwrite, imdecode, imencode ...
opencv_features2d	keypoint feature and matcher ...
opencv_photo	inpaint , fastNlMeansDenoising ...
opencv_video	opticalflow, KalmanFilter ...

• you can get more details in head file within directory of opencv2 .

Usage Android

1. Extract Zip to <project dir>/app/src/main/jni/
2. Modify <project dir>/app/src/main/jni/CMakeListst.txt to link OpenCv

set(OpenCV_DIR ${CMAKE_SOURCE_DIR}/OpenCvSlim-x.x.x-android/sdk/native/jni)
find_package(OpenCV REQUIRED)

target_link_libraries(target ${OpenCV_LIBS})

Usage ARM Linux, Windows, Linux

1. Extract Zip to <project dir>/
2. Modify <project dir>/CMakeListst.txt to link OpenCv
3. Set -DOpenCV_STATIC=ON to cmake option for windows build

set(OpenCV_DIR ${CMAKE_SOURCE_DIR}/OpenCvSlim-x.x.x-armlinux/aarch64-linux-gnu/lib/cmake/opencv2)
find_package(OpenCV REQUIRED)

target_link_libraries(target ${OpenCV_LIBS})