JavaCV中的人脸检测

Question

我有以下代码来检测人脸。

public class FaceDetection { 


    public static final String XML_FILE = 
        " C:/opencv/data/haarcascades/haarcascade_frontalface_default.xml"; 


      public static void main(String[] args){ 

       IplImage img = cvLoadImage("C:/Users/Ioanna/Desktop/lena.png");  
       detect(img);   
      } 

      public static void detect(IplImage src){ 

       CvHaarClassifierCascade cascade = new 
         CvHaarClassifierCascade(cvLoad(XML_FILE)); 
       CvMemStorage storage = CvMemStorage.create(); 
       CvSeq sign = cvHaarDetectObjects(
         src, 
         cascade, 
         storage, 
         1.5, 
         3, 
         CV_HAAR_DO_CANNY_PRUNING); 

       cvClearMemStorage(storage); 

       int total_Faces = sign.total();  

       for(int i = 0; i < total_Faces; i++){ 
        CvRect r = new CvRect(cvGetSeqElem(sign, i)); 
        cvRectangle (
          src, 
          cvPoint(r.x(), r.y()), 
          cvPoint(r.width() + r.x(), r.height() + r.y()), 
          CvScalar.RED, 
          2, 
          CV_AA, 
          0); 

       } 

       cvShowImage("Result", src); 
       cvWaitKey(0); 

      }   

} 

当它运行时返回以下错误

OpenCV的错误：在未知功能，文件...... \ SRC \的OpenCV \模块\ objdetect \ SRC \空指针（无效的分类器级联） haar.cpp，line 1514 线程“main”中的异常java.lang.RuntimeException：...... \ src \ opencv \ modules \ objdetect \ src \ haar.cpp：1514：error：（-27）无效的分类器级联

at com.googlecode.javacv.cpp.opencv_objdetect.cvHaarDetectObjects(Native Method) 
at com.googlecode.javacv.cpp.opencv_objdetect.cvHaarDetectObjects(opencv_objdetect.java:238) 
at FaceDetection.FaceDetection.detect(FaceDetection.java:32) 
at FaceDetection.FaceDetection.main(FaceDetection.java:24) 

有谁知道是什么问题？

感谢

Answer 1

复制链接C:/Users/Ioanna/Desktop/lena.png 并将其粘贴到类的文件，并复制链接C:/opencv/data/haarcascades/haarcascade_frontalface_default.xml 并将其粘贴到类

public static final String XML_FILE = "haarcascade_frontalface_default.xml"; 
IplImage img = cvLoadImage("lena.jpg");