OpenCV for Android 环境搭建

OpenCV for Android 环境搭建

两种方式集成SDK

1.使用java API 依赖sdk，libs下依赖opencv_java?.so

build.gradle
implementation project(':openCVLibrary330')
//来自sdk/java 目录

//复制 sdk/native/libs 到项目中
sourceSets {
    main {
        jniLibs.srcDirs = ['libs']
    }
}

//application 或者 activity 里左初始化
private void iniLoadOpenCV() {
    boolean success = OpenCVLoader.initDebug();
    if(success) {
        Log.i(CV_TAG, "OpenCV Libraries loaded...");
    } else {
        Toast.makeText(this.getApplicationContext(), "WARNING: Could not load OpenCV Libraries!", Toast.LENGTH_LONG).show();
    }
}

1.使用c++ API，集成.a 文件到自己的so库

CMakeLists.txt

cmake_minimum_required(VERSION 3.4.1)

# ##################### OpenCV 环境 ############################
#设置OpenCV-android-sdk路径
set( OpenCV_DIR D:\\work\\opencv-4.3.0-android-sdk\\OpenCV-android-sdk\\sdk\\native\\jni )

find_package(OpenCV REQUIRED )
if(OpenCV_FOUND)
    include_directories(${OpenCV_INCLUDE_DIRS})
    message(STATUS "OpenCV library status:")
    message(STATUS "    version: ${OpenCV_VERSION}")
    message(STATUS "    libraries: ${OpenCV_LIBS}")
    message(STATUS "    include path: ${OpenCV_INCLUDE_DIRS}")
else(OpenCV_FOUND)
    message(FATAL_ERROR "OpenCV library not found")
endif(OpenCV_FOUND)

# ###################### 项目原生模块 ###########################

add_library( native-lib
            SHARED
            src/main/cpp/native-lib.cpp src/main/cpp/native-opencv.cpp)

target_link_libraries( native-lib
                    ${OpenCV_LIBS}
                    log
                    jnigraphics)