opencv3_java 图像上加水印TextOnImg Rect

图像上加水印TextOnImg Rect

package opencv_java_demo;import org.opencv.core.*;import org.opencv.imgcodecs.*;import org.opencv.imgproc.*;public class TextOnImg {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");}Mat dst = src.clone();//复制矩阵进入dstPoint p=new Point(50.0,src.rows()/2-50);//定义文本输入点Imgproc.putText(dst, "hello opencv3", p, Core.FONT_HERSHEY_SIMPLEX, 0.8, new Scalar(50,60,80),2);//在dst图像中写入hello opencv3，2为字体粗度Imgcodecs.imwrite("./images/textonimg.jpg", dst);//输出图像}catch(Exception e){System.out.println("例外：" + e);}}}