在Java语言编程中,如何使用Java向图像添加文本?
注意:需要访问网址:http://book2s.com/java/jar/o/opencv/download-opencv-3.2.0-0.html , 下载一个OpenCV软件包。这里下载最新版本:opencv-3.2.0-vc14.exe并解压此文件到D:\software\opencv目录中。
项目结构如下图所示 -
添加一个用户自定义库:OpenCV3.2,并指配置构建路径为:D:\software\opencv\opencv\build\java\x64,如下图所示 -
注:可参考: http://blog.csdn.net/shawncheer/article/details/51098456
以下是使用Java向图像添加文本的程序 -
package com.yiibai;
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 AddingTextToImage {
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 = "images/zhonglou.jpg";
Mat matrix = Imgcodecs.imread(file);
// Adding Text
Imgproc.putText(matrix, // Matrix obj of the image
"Yiibai", // Text to be added
new Point(100, 390), // point
Core.FONT_HERSHEY_SIMPLEX, // front face
8.0, // front scale
new Scalar(0, 0, 0), // Scalar object for color
5); // Thickness
Imgcodecs.imwrite("images/addingTextOP.jpg", matrix);
System.out.println("Image Processed");
}
}
执行上面示例代码,得到以下结果 -
Image Processed
原图 -
在执行上面示例代码成功后,应该会在 F:\worksp\javaexamples\java_opencv\images 目录中有看到生成一个文件:addingTextOP.jpg 。
问题
F:\worksp\javaexamples\java_opencv
Exception in thread "main" java.lang.UnsatisfiedLinkError: no opencv_java320 in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at com.yiibai.CopyAndPasteAnImage.main(CopyAndPasteAnImage.java:13)
解决上述问题可通过参考: http://blog.csdn.net/shawncheer/article/details/51098456