open cv 4.6.0 导入maven库以及依赖包 安装教程

windows：

1.官网下载windows安装包

2.安装完成后，复制opencv\build\java\x64\opencv_java451.dll 到 C:\Windows 下

centos： 

参考https://www.cnblogs.com/huizhipeng/p/12732019.html

1.先安装cmake3 参考https://www.jianshu.com/p/20dfd94b717e

2.官网下载sources压缩包

3.解压unzip opencv.zip && cd opencv-4.5.1

4.创建build文件夹mkdir build

5.cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -DBUILD_TESTS=OFF ..

6.make -j8

7.make install

8.在opencv-4.5.1/build/lib中查看libopencv_java451.so文件和 jar文件

9.将libopencv_java451.so复制到usr/lib中

1.java调用：

1.maven依赖

<dependency>

    <groupId>org.openpnp</groupId>

    <artifactId>opencv</artifactId>

    <version>4.5.1-2</version>

</dependency>

2.加载库文件

System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

之后可进行其他代码操作

3.可能的报错

no opencv_javaXXX in java.library.path： 复制dll文件到C:\Windows 或复制os文件到usr/lib下

cant find dependent librarie

二、open cv 安装

cmake -D WITH_TBB=ON -D WITH_EIGEN=ON .. cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=user/local/opencv -D OPENCV_EXTRA_MODULES_PATH=/software/opencv-4.6.0/opencv_contrib-4.6.0/modules/ .. make&&make install

cmake -D WITH_TBB=ON -D WITH_EIGEN=ON .. cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/software/opencv-4.6.0/ -D OPENCV_EXTRA_MODULES_PATH=/software/opencv-4.6.0/opencv_contrib-4.6.0/modules/ .. make&&make install

yum install ant

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX= -DBUILD_TESTS=OFF ..

make -j8

make install

三、opencv依赖包安装