Java|Java OpenCV图像处理之图形与文字绘制 JavaOpenCV图像处理之图形与文字

前言
核心代码
效果图

前言代码地址

序號	名稱	方法
1	圖像添加文字	Imgproc.putText
2	圖像畫直綫	Imgproc.line
3	圖像畫橢圓	Imgproc.ellipse
4	圖像畫矩形	Imgproc.rectangle
5	圖像畫園	Imgproc.circle
6	圖像填充	Imgproc.fillConvexPoly

核心代码

package com.xu.opencv.canva; import java.io.File; import java.util.ArrayList; import java.util.List; import org.opencv.core.Mat; import org.opencv.core.MatOfPoint; import org.opencv.core.Point; import org.opencv.core.Scalar; import org.opencv.core.Size; import org.opencv.highgui.HighGui; import org.opencv.imgcodecs.Imgcodecs; import org.opencv.imgproc.Imgproc; /** * @version V-1.0 * @Title: Canvas.java * @Package com.xu.opencv.canvas * @Description: TODO * @author: hyacinth * @date: 2019年1月26日下午5:08:18 * @Copyright: 2019 hyacinth */public class Canvas {static {String os = System.getProperty("os.name"); String type = System.getProperty("sun.arch.data.model"); if (os.toUpperCase().contains("WINDOWS")) {File lib; if (type.endsWith("64")) {lib = new File("lib\\OpenCV-455\\x64\\" + System.mapLibraryName("opencv_java455")); } else {lib = new File("lib\\OpenCV-455\\x86\\" + System.mapLibraryName("opencv_java455")); }System.load(lib.getAbsolutePath()); }}public static void main(String[] args) {fillPoly(); }/*** OpenCV-4.0.0 图像文字** @return: void* @date: 2019年1月26日下午5:37:04*/public static void putText() {Mat src = https://www.it610.com/article/Imgcodecs.imread("D:\\OneDrive\\桌面\\5.jpeg"); Imgproc.putText(src, "test text", new Point(60, 60), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar(0, 255, 0), 1, Imgproc.LINE_AA, false); HighGui.imshow("putText", src); HighGui.waitKey(1); }/*** OpenCV-4.0.0 图像画线** @return: void* @date: 2019年1月17日下午8:32:41*/public static void line() {Mat src = https://www.it610.com/article/Imgcodecs.imread("D:\\OneDrive\\桌面\\5.jpeg"); Imgproc.line(src, new Point(10, 50), new Point(100, 50), new Scalar(0, 0, 255), 1, Imgproc.LINE_AA); HighGui.imshow("图像画线", src); HighGui.waitKey(1); }/*** OpenCV-4.0.0 图像椭圆** @return: void* @date: 2019年1月17日下午8:32:56*/public static void ellipse() {Mat src = https://www.it610.com/article/Imgcodecs.imread("D:\\OneDrive\\桌面\\5.jpeg"); Imgproc.ellipse(src, new Point(200, 200), new Size(90, 50), 0, 0, 360, new Scalar(0, 0, 255), 1, Imgproc.LINE_AA); HighGui.imshow("图像椭圆", src); HighGui.waitKey(1); }/*** OpenCV-4.0.0 图像矩形** @return: void* @date: 2019年1月17日下午8:33:08*/public static void rectangle() {Mat src = https://www.it610.com/article/Imgcodecs.imread("D:\\OneDrive\\桌面\\5.jpeg"); Imgproc.rectangle(src, new Point(10, 10), new Point(200, 200), new Scalar(0, 255, 0)); HighGui.imshow("图像矩形", src); HighGui.waitKey(1); }/*** OpenCV-4.0.0 图像画圆** @return: void* @date: 2019年1月17日下午8:33:27*/public static void circle() {Mat src = https://www.it610.com/article/Imgcodecs.imread("D:\\OneDrive\\桌面\\5.jpeg"); Imgproc.circle(src, new Point(50, 50), 20, new Scalar(0, 255, 0), 2, Imgproc.LINE_8); HighGui.imshow("图像画圆", src); HighGui.waitKey(1); }/*** OpenCV-4.0.0 图像填充** @return: void* @date: 2019年1月26日下午6:25:55*/public static void fillPoly() {Mat src = https://www.it610.com/article/Imgcodecs.imread("D:\\OneDrive\\桌面\\5.jpeg"); // 1List points1 = new ArrayList<>(); points1.add(new Point(0, 100)); points1.add(new Point(50, 50)); points1.add(new Point(100, 100)); points1.add(new Point(150, 50)); points1.add(new Point(200, 100)); points1.add(new Point(100, 250)); Point[] array = points1.stream().toArray(Point[]::new); MatOfPoint point = new MatOfPoint(array); Imgproc.fillConvexPoly(src, point, new Scalar(0, 255, 0), Imgproc.LINE_AA); // 2List points2 = new ArrayList<>(); points2.add(new Point(100, 100)); points2.add(new Point(150, 50)); points2.add(new Point(200, 100)); Imgproc.fillConvexPoly(src, new MatOfPoint(points2.stream().toArray(Point[]::new)), new Scalar(0, 255, 0), Imgproc.LINE_AA); HighGui.imshow("图像填充", src); HighGui.waitKey(1); }}

效果图