Eclipse+Java+OpenCV246人脸检测

1.环境搭建：见上一篇博客

整个项目的结构图：

2.编写DetectFaceDemo.java,代码如下：

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：

源码下载：http://download.csdn.net/detail/nuptboyzhb/5961985

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