官网地址:Releases - OpenCV
下载地址:Download OpenCV from SourceForge.net
这里我用的opencv440的windows版本
下载完成后点击exe进行安装,安装完成后会生成opencv文件夹,里面有各个环境文件
1.在opencv\build\java\以及opencv\build\java\x64下提取jar包以及动态库。
2.在resources下创建lib/opencv文件夹,并将这两个包放进去。
3.在pom.xml添加依赖如下(或者在项目之中添加jar包)
<dependency> <groupId>org</groupId> <artifactId>opencv</artifactId> <scope>system</scope> <systemPath>${project.basedir}\src\main\resources\lib\opencv\opencv-440.jar</systemPath> </dependency>
4. 灰化图片Demo
package com.me.lab.lab_tool; import org.junit.jupiter.api.Test; import org.junit.runner.RunWith; import org.opencv.core.CvType; import org.opencv.core.Mat; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; import java.net.URL; import static org.opencv.highgui.HighGui.imshow; import static org.opencv.highgui.HighGui.waitKey; import static org.opencv.imgcodecs.Imgcodecs.imread; import static org.opencv.imgcodecs.Imgcodecs.imwrite; import static org.opencv.imgproc.Imgproc.COLOR_RGB2GRAY; import static org.opencv.imgproc.Imgproc.cvtColor; /** * @author An * @title: DemoApplicationTests * @projectName me_lab * @description: 灰化图片 * @date 2022/1/5 0005下午 22:06 */ @RunWith(SpringRunner.class) @SpringBootTest public class DemoApplicationTests { /** * @return * @Description * @Param * @Author zhangsan * @Date 2020.09.05 9:43 **/ @Test public void testOpencv() throws Exception { // 解决awt报错问题 System.setProperty("java.awt.headless", "false"); System.out.println(System.getProperty("java.library.path")); // 加载动态库 URL url = ClassLoader.getSystemResource("lib/opencv/opencv_java440.dll"); System.load(url.getPath()); // 读取图像 Mat image = imread("D:\\IDEA\\me\\me_lab\\lab_tool\\img\\11.jpg"); if (image.empty()) { throw new Exception("image is empty"); } imshow("Original Image", image); // 创建输出单通道图像 Mat grayImage = new Mat(image.rows(), image.cols(), CvType.CV_8SC1); // 进行图像色彩空间转换 cvtColor(image, grayImage, COLOR_RGB2GRAY); imshow("Processed Image", grayImage); imwrite("D:\\IDEA\\me\\me_lab\\lab_tool\\img\\hui11.jpg", grayImage); waitKey(); } }
效果图