在 JavaCV 或 OPENCV 中查找轮廓 [英] Find contours in JavaCV or OPENCV

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，调试器停止在

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 );

我认为它与 CvSeq contours = new CvSeq(iplGray);但我不明白为什么.有什么有用的想法吗?

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

推荐答案

对于轮廓检测，我用过这个方法.表现不错.

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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