在JavaCV或OPENCV中查找轮廓

问题描述

我有一个问题，但我不知道是什么！我有下一个代码，当我调试它时，调试器停在

  IplImage iplGray = cvCreateImage（cvGetSize（iplUltima） ，8,1）; 
 CvMemStorage g_storage = null; 
 CvSeq轮廓= new CvSeq（iplGray）; 
 
 opencv_imgproc.cvCvtColor（iplUltima，iplGray，opencv_imgproc.CV_BGR2GRAY）; 
 opencv_imgproc.cvThreshold（iplGray，iplGray，100，255，opencv_imgproc.CV_THRESH_BINARY）; 
 
 //这里，下一行：
 opencv_imgproc.cvFindContours（iplGray，g_storage，contour，CV_C，CV_C，CV_C）; 
 cvZero（iplGray）; 
 if（contours！= null）{
 opencv_core.cvDrawContours（iplGray，contour，CvScalar.ONE，CvScalar.ONE，CV_C，CV_C，CV_C）; 
} 
 cvShowImage（Contours，iplGray）; 
  

我认为这与CvSeq轮廓= new CvSeq（iplGray）有关。但我不明白为什么。
任何有用的想法？

解决方案

对于轮廓检测，我已经使用了这个方法。

pre $ public static IplImage detectObjects（IplImage srcImage）{

IplImage resultImage = cvCloneImage （srcImage）;

CvMemStorage mem = CvMemStorage.create（）;
CvSeq轮廓= new CvSeq（）;
CvSeq ptr = new CvSeq（）;

cvFindContours（srcImage，mem，contours，Loader.sizeof（CvContour.class），CV_RETR_CCOMP，CV_CHAIN_APPROX_SIMPLE，cvPoint（0,0））;

CvRect boundbox;

（ptr = contours; ptr！= null; ptr = ptr.h_next（））{
boundbox = cvBoundingRect（ptr，0）;

cvRectangle（boundbox.x（）+ boundbox.width（），boundbox.y（） + boundbox.height（）），
cvScalar（0，255，0，0），1,0,0）;
}

return resultImage;
}


I have a problem but I don't know what! I have the next code, and when I debug it, the debugger stops in the

IplImage iplGray = cvCreateImage(cvGetSize(iplUltima), 8, 1 );
CvMemStorage g_storage = null;
CvSeq contours = new CvSeq(iplGray);

opencv_imgproc.cvCvtColor(iplUltima, iplGray, opencv_imgproc.CV_BGR2GRAY);
opencv_imgproc.cvThreshold(iplGray, iplGray, 100, 255, opencv_imgproc.CV_THRESH_BINARY);

//HERE, the next line:
opencv_imgproc.cvFindContours(iplGray, g_storage, contours, CV_C, CV_C, CV_C);
cvZero(iplGray);
if(contours != null){
    opencv_core.cvDrawContours(iplGray, contours, CvScalar.ONE, CvScalar.ONE, CV_C, CV_C, CV_C);
}
cvShowImage( "Contours", iplGray );

I think it is related with CvSeq contours = new CvSeq(iplGray); but I don't understand why.Any helpful idea?

解决方案

For Contours Detection, I have used this method. It is performed well.

public static IplImage detectObjects(IplImage srcImage){

    IplImage resultImage = cvCloneImage(srcImage);

    CvMemStorage mem = CvMemStorage.create();
    CvSeq contours = new CvSeq();
    CvSeq ptr = new CvSeq();

    cvFindContours(srcImage, mem, contours, Loader.sizeof(CvContour.class) , CV_RETR_CCOMP, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0));

    CvRect boundbox;

    for (ptr = contours; ptr != null; ptr = ptr.h_next()) {
        boundbox = cvBoundingRect(ptr, 0);

            cvRectangle( resultImage , cvPoint( boundbox.x(), boundbox.y() ),
                cvPoint( boundbox.x() + boundbox.width(), boundbox.y() + boundbox.height()),
                cvScalar( 0, 255, 0, 0 ), 1, 0, 0 );
    }

    return resultImage;
}

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