说明：  linux centos java opencv4.5.1开发依赖，由于在本地是windows环境，直接在opencv官网下载windows版本下载后，即可得到opencv-451.jar和opencv_java451.dll，可以愉快的开发及测试，但是测通过之后需要部署到服务器，服务器是centos环境，jar包是跨平台的，但是dll不能，所以只能下载最新版的opencv源码，进行编译安装，并且打包成静态文件，大家只需要把libopencv_java451.so放到 java.library.path下面就行了
(Linux CentOS Java opencv4.5.1 development depends on. Because it is a Windows environment locally, opencv-451.jar and opencv can be obtained directly after downloading the Windows version on the opencv official website_ Java451.dll, can be developed and tested happily. However, after the test is passed, it needs to be deployed to the server. The server is a CentOS environment. Jar package is cross platform, but DLL cannot, so only the latest version of OpenCV source code can be downloaded for compilation and installation, and it is packaged into static files. You only need to download libopencv_ Java451.so put into java.library.path Here's all)