opencv3_java 图像的修剪裁剪Trimming Rect

图像的修剪裁剪Trimming Rect

package opencv_java_demo;

import org.opencv.core.*;
import org.opencv.imgcodecs.*;
import org.opencv.imgproc.Imgproc;

public class Trimming {

	public static void main(String[] args) {
		try{
			System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
			
			Mat src=Imgcodecs.imread("./images/lenna.jpg");
			//读取图像到矩阵中
			if(src.empty()){
				throw new Exception("no file");
			}
			
			Rect roi=new Rect(40,40,src.cols()-40,src.rows()-40);
			//指定图像格式大小
			Mat dst=new Mat(src,roi);
			Imgcodecs.imwrite("./images/Trimming.jpg", dst);
		}catch(Exception e){
			System.out.println("例外：" + e);
		}

	}

}