<dependencies>
        <dependency>
            <groupId>org.bytedeco</groupId>
            <artifactId>javacv-platform</artifactId>
            <version>1.5.5</version>
        </dependency>
    </dependencies>

import org.bytedeco.opencv.opencv_core.Mat;

import static org.bytedeco.opencv.global.opencv_highgui.destroyAllWindows;
import static org.bytedeco.opencv.global.opencv_highgui.imshow;
import static org.bytedeco.opencv.global.opencv_highgui.waitKey;
import static org.bytedeco.opencv.global.opencv_imgcodecs.imread;
import static org.bytedeco.opencv.global.opencv_imgcodecs.imwrite;

public class OpenCV111 {
    public static void main(String[] args) {

        String parent = "E:/opencv/";
        //读取图片
        Mat imread = imread(parent + "image/test.png");
        //显示窗口
        imshow("demo",imread);
        //按任意键退出程序
        waitKey(0);
        //关闭所有窗口
        destroyAllWindows();
        //保存图片
        imwrite(parent+"out/test1.png",imread);


    }
}