opencv
Funciones de dibujo en Java

Dibujar el rectángulo en la imagen

public class DrawRectangle {
 
    public static void main(String[] args) {
    //Load native library
    System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
    //image container object
    Mat goruntuDizisi=new Mat();
    //Read image in file system
    goruntuDizisi=Imgcodecs.imread("C:\\image.jpg");    
    //Draw rectangle
    //Parameters: mat object for drawing, point coordinates (x1,y1,x2,y2) and color BGR
    Imgproc.rectangle(goruntuDizisi, new Point(10,100), new Point(100,200),new Scalar(76,255,0));
    Imgcodecs.imwrite("C:\\Yeni_kiz_kulesi.jpg", goruntuDizisi);
    System.out.println("Writed");
    }
}