opencv 人脸识别 java版------2
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代码下载地址 http://download.csdn.net/detail/u013378306/9656546
1.环境搭建:见上一篇博客
整个项目的结构图:
- package com.njupt.zhb.test;
- import org.opencv.core.Core;
- import org.opencv.core.Mat;
- import org.opencv.core.MatOfRect;
- import org.opencv.core.Point;
- import org.opencv.core.Rect;
- import org.opencv.core.Scalar;
- import org.opencv.highgui.Highgui;
- import org.opencv.objdetect.CascadeClassifier;
- //
- // Detects faces in an image, draws boxes around them, and writes the results
- // to "faceDetection.png".
- //
- public class DetectFaceDemo {
- public void run() {
- System.out.println("\nRunning DetectFaceDemo");
- System.out.println(getClass().getResource("lbpcascade_frontalface.xml").getPath());
- // Create a face detector from the cascade file in the resources
- // directory.
- //CascadeClassifier faceDetector = new CascadeClassifier(getClass().getResource("lbpcascade_frontalface.xml").getPath());
- //Mat image = Highgui.imread(getClass().getResource("lena.png").getPath());
- //注意:源程序的路径会多打印一个‘/’,因此总是出现如下错误
- /*
- * Detected 0 faces Writing faceDetection.png libpng warning: Image
- * width is zero in IHDR libpng warning: Image height is zero in IHDR
- * libpng error: Invalid IHDR data
- */
- //因此,我们将第一个字符去掉
- String xmlfilePath=getClass().getResource("lbpcascade_frontalface.xml").getPath().substring(1);
- CascadeClassifier faceDetector = new CascadeClassifier(xmlfilePath);
- Mat image = Highgui.imread(getClass().getResource("we.jpg").getPath().substring(1));
- // Detect faces in the image.
- // MatOfRect is a special container class for Rect.
- MatOfRect faceDetections = new MatOfRect();
- faceDetector.detectMultiScale(image, faceDetections);
- System.out.println(String.format("Detected %s faces", faceDetections.toArray().length));
- // Draw a bounding box around each face.
- for (Rect rect : faceDetections.toArray()) {
- Core.rectangle(image, new Point(rect.x, rect.y), new Point(rect.x + rect.width, rect.y + rect.height), new Scalar(0, 255, 0));
- }
- // Save the visualized detection.
- String filename = "faceDetection.png";
- System.out.println(String.format("Writing %s", filename));
- Highgui.imwrite(filename, image);
- }
- }
3.编写测试类:
- package com.njupt.zhb.test;
- public class TestMain {
- public static void main(String[] args) {
- System.out.println("Hello, OpenCV");
- // Load the native library.
- System.loadLibrary("opencv_java246");
- new DetectFaceDemo().run();
- }
- }
- //运行结果:
- //Hello, OpenCV
- //
- //Running DetectFaceDemo
- ///E:/eclipse_Jee/workspace/JavaOpenCV246/bin/com/njupt/zhb/test/lbpcascade_frontalface.xml
- //Detected 8 faces
- //Writing faceDetection.png
运行结果:
0 0
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