Javaexamples-geometric-shapes-to-images
提供:Dev Guides
画像への幾何学的形状
問題の説明
Javaを使用して画像に幾何学的図形を描画する方法。
溶液
以下は、Javaを使用して幾何学的図形を画像に描画するプログラムです。
import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.Point;
import org.opencv.core.Scalar;
import org.opencv.imgcodecs.Imgcodecs;
import org.opencv.imgproc.Imgproc;
public class DrawingshapesOnImage {
public static void main(String args[]) {
//Loading the OpenCV core library
System.loadLibrary( Core.NATIVE_LIBRARY_NAME );
//Reading the Image from the file and storing it in to a Matrix object
String file = "C:/opencv/logo.jpg";
Mat matrix = Imgcodecs.imread(file);
/*
//Drawing an Ellipse
Imgproc.ellipse(matrix, //Matrix obj of the image
new RotatedRect( new Point(20, 150),new Size(260, 180), 180 ),
//RotatedRect(Point c, Size s, double a)
new Scalar(0, 0, 255), //Scalar object for color
10); //Thickness of the line
*/
//Drawing a Rectangle
Imgproc.rectangle(matrix, //Matrix obj of the image
new Point(10, 10), //p1
new Point(390, 390), //p2
new Scalar(0, 100, 255), //Scalar object for color
5); //Thickness of the line
//Writing image
Imgcodecs.imwrite("C:/opencv/drawingShapesOnImage.jpg", matrix);
System.out.println("Image processed");
}
}