[Resolvido]Erro Exception in thread "main" java.lang.NullPointerException

package opencv123;

import com.googlecode.javacv.JavaCvErrorCallback;
import static com.googlecode.javacv.cpp.opencv_core.*;
import static com.googlecode.javacv.cpp.opencv_highgui.*;
import static com.googlecode.javacv.cpp.opencv_imgproc.CV_BGR2GRAY;
import static com.googlecode.javacv.cpp.opencv_imgproc.cvCvtColor;
import com.googlecode.javacv.cpp.opencv_objdetect.CvHaarClassifierCascade;
import static com.googlecode.javacv.cpp.opencv_objdetect.cvHaarDetectObjects;



public class Opencv123 {

  private static final String CASCADE_FILE = "haarcascade_frontalface_alt.xml";
 
  public static void main(String[] args) throws Exception {
    
    new JavaCvErrorCallback().hashCode();
          
    IplImage originalImage = cvLoadImage(args[0], 1);
 
    IplImage grayImage2 = new IplImage(IplImage.create(originalImage.width(),originalImage.height(), IPL_DEPTH_8U, 1));
    
    cvCvtColor(originalImage, grayImage2, CV_BGR2GRAY);
 
    CvMemStorage storage = CvMemStorage.create();
 
    CvHaarClassifierCascade cascade = new CvHaarClassifierCascade(cvLoadImage(CASCADE_FILE));
 
    CvSeq faces = cvHaarDetectObjects(grayImage2, cascade, storage, 1.1, 1, 0);
 
    for (int i = 0; i < faces.total();i++) {
      CvRect r = new CvRect(cvGetSeqElem(faces, i));
      cvRectangle(originalImage, cvPoint(r.x(), r.y()),
      cvPoint(r.x() + r.width(), r.y() + r.height()), CvScalar.YELLOW, 1, CV_AA, 0);
    }
 
    cvSaveImage(args[1], originalImage);
  }
}