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Ubuntu+Cmake-gui+OpenCV+Opencv_contrib+Android的讲解

这篇文章主要介绍了Ubuntu+Cmake-gui+OpenCV+Opencv_contrib+Android的讲解,通过具体代码讲解7455并且分析了Ubuntu+Cmake-gui+OpenCV+Opencv_contrib+Android的讲解的详细步骤与相关技巧,需要的朋友可以参考下

本文实例讲述了Ubuntu+Cmake-gui+OpenCV+Opencv_contrib+Android的讲解。分享给大家供大家参考文章查询地址https://www.b2bchain.cn/7455.html。具体如下:

Using Cmake-gui to build OpenCV and Opencv_contrib for Android on Ubuntu !

一、Compiler Environment & Tools Versions

1.Cmake-gui 3.18.0
2.OpenCV 4.3.0
3.Opencv_contrib 4.3.0
4.Ubuntu 18.04

二、Cmake-gui configuration

1.select source directory & output directoryUbuntu+Cmake-gui+OpenCV+Opencv_contrib+Android
2.Add Entry for Android

  • ANDROID_NDK type is PATH,enter NDK path
  • ANDROID_SDK type is PATH,enter SDK path
  • ANDROID_ABI type is STRING,default is armeabi-v7a
  • ANDROID_NATIVE_API_LEVEL type is STRING,default is 21
  • ANDROID_STL type is STRING,enter c++_static or c++_shared(default gnustl_static
  • CMAKE_TOOLCHAIN_FILE type is FILEPATH,

Option1:Ubuntu+Cmake-gui+OpenCV+Opencv_contrib+Android
Ubuntu+Cmake-gui+OpenCV+Opencv_contrib+Android

Option2: enter NDK cmake path. likeandroid-ndk-r16b/build/cmake/android.toolchain.cmake

  • more info can be found in xxx/opencv/platforms/android/android.toolchain.cmake

then click the button Configure in bottom. if no errors, it will be show logs as below:

Parallel framework:            pthreads    Trace:                         YES (with Intel ITT)    Other third-party libraries:     Custom HAL:                  NO     Protobuf:                    build (3.5.1)    Python (for build):            /usr/bin/python3    Java:                          export all functions     ant:                         NO     Java wrappers:               YES     Java tests:                  NO    Install to:                    /home/xxx/Document/player/build-opencv-for-android/opencv430/build/install -----------------------------------------------------------------  Configuring done 

3.Set Configuration for OpenCV(Options)

  • OPENCV_EXTRA_MODULES_PATH set value:xxx/Document/player/build-opencv-for-android/opencv_contrib430/modules
  • BUILD_ANDROID_PROJECTS=ON Build Android projects providing APK files.
  • BUILD_ANDROID_EXAMPLES=OFF
  • BUILD_PERF_TESTS=OFF
  • BUILD_TESTS=OFF
  • BUILD_opencv_world=OFF
  • BUILD_SHARED_LIBS=OFF
  • WITH_CUDA=OFF
  • CMAKE_BUILD_TYPE=Release

then click the button Configure in bottom again. Also if no errors, it will be show logs as below:

GUI:     Media I/O:      ZLib:                        z (ver 1.2.3)     JPEG:                        build-libjpeg-turbo (ver 2.0.4-62)     WEBP:                        build (ver encoder: 0x020f)     PNG:                         build (ver 1.6.37)     TIFF:                        build (ver 42 - 4.0.10)     JPEG 2000:                   build Jasper (ver 1.900.1)     OpenEXR:                     build (ver 2.3.0)     HDR:                         YES     SUNRASTER:                   YES     PXM:                         YES     PFM:                         YES    Video I/O:    Parallel framework:            pthreads    Trace:                         YES (with Intel ITT)    Other third-party libraries:     Custom HAL:                  NO     Protobuf:                    build (3.5.1)    Python (for build):            /usr/bin/python3    Java:                          export all functions     ant:                         NO     Java wrappers:               YES     Java tests:                  NO    Install to:                    xxx/Document/player/build-opencv-for-android/opencv430/build/install -----------------------------------------------------------------  Configuring done 

Finally, click the button Generate, and it will be show logs as below:

----------------------------------------------------------------- Configuring done Generating done 

三、Build

Note!
Do the stuff below before building:
Copy file xfeatures2d.hpp and directory xfeatures2d
from xxx/opencv_contrib430/modules/xfeatures2d/include/opencv2
to xxx/opencv430/modules/features2d/include/opencv2
result like:
Ubuntu+Cmake-gui+OpenCV+Opencv_contrib+Android

otherwise, will occurse error like:

In file included from /home/xxx/Document/player/build-opencv-for-android/opencv-4.3.0/modules/java/generator/src/cpp/opencv_java.cpp:8: In file included from /home/xxx/Document/player/build-opencv-for-android/opencv-4.3.0/output/modules/java_bindings_generator/gen/cpp/opencv_jni.hpp:18: /home/xxx/Document/player/build-opencv-for-android/opencv-4.3.0/output/modules/java_bindings_generator/gen/cpp/xfeatures2d.inl.hpp:12:10: fatal error: 'opencv2/xfeatures2d.hpp' file not found #include "opencv2/xfeatures2d.hpp" 

1.Command line build

cd /home/xxx/Document/player/build-opencv-for-android/opencv430/build make -j8 

No errors, exeute

make install 

references:

  1. Windows环境下为Android编译OpenCV4.3
  2. Ubuntu 16.04下为Android编译OpenCV 3.2.0 Manager
  3. build-opencv-for-android
  4. Windows 下 OpenCV 3.4.0 + Contrib 部署文档 (VS2015 & Android)
  5. Ubuntu16.04编译OpenCV for Android
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