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How to draw geometric shapes to an image using Java
Problem Description
How to draw geometric shapes to an image using java.
Solution
Following is the program to draw geometric shapes to an image using java.
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"); } }
Input
Output
java_opencv
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