hand detection using opencv in ycrvb color model

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Hi,

I am a student in asia. Now I am doing a project in HCI(Human Interacion Computer). I meet a problem for this code, the following code that I can compile and pass. But, When I am running .exe, there is an error and I try to debug it shows :stack over" Can somebody help me, to find the problem?
Thanks!

By the way i use dev-c Ver4.9.9.2

#include "cv.h"
#include "cxcore.h"
#include "highgui.h"
#include "math.h"
#include <iostream>
#include <stdio.h>
#include <string.h>
#include <conio.h>
#include <sstream>
#include <time.h>
using namespace std;
/* --------------------------------------------*/
int main()
{
    int c = 0; 
    CvSeq* a = 0;
    CvCapture* capture = cvCaptureFromCAM(0);
    if(!cvQueryFrame(capture)){ cout<<"Video capture failed, please check the camera."<<endl;}
    else{cout<<"Video camera capture status: OK"<<endl;};
    CvSize sz=cvGetSize(cvQueryFrame(capture));
	IplImage* src = cvCreateImage( sz, 8, 3 );
	IplImage* YCC=cvCreateImage( sz, 8, 1);
	IplImage* YCrCb=cvCreateImage( sz, 8, 3);
	
	CvMemStorage* storage = cvCreateMemStorage(0);
	CvMemStorage* areastorage = cvCreateMemStorage(0);
	CvMemStorage* minStorage = cvCreateMemStorage(0);
	CvMemStorage* dftStorage = cvCreateMemStorage(0);
	CvSeq* contours = NULL;
	cvNamedWindow( "src",1);
    // 
	while(c!= 27)
	{
	   IplImage* bg = cvCreateImage( sz, 8, 3);
	   uchar *data=(uchar *)YCC->imageData;
	   CvScalar w;
           double Y,Cr,Cb;
	   cvRectangle( bg, cvPoint(0,0), cvPoint(bg->width,bg->height), CV_RGB( 255, 255, 255), -1, 8, 0 );
	   bg->origin = 1;
	   for(int b = 0; b< int(bg->width/10); b++)
	   {
	      cvLine( bg, cvPoint(b*20, 0), cvPoint(b*20, bg->height), CV_RGB( 200, 200, 200), 1, 8, 0 );
	      cvLine( bg, cvPoint(0, b*20), cvPoint(bg->width, b*20), CV_RGB( 200, 200, 200), 1, 8, 0 );
	   }
	   src = cvQueryFrame( capture);
	   cvCvtColor(src,YCrCb,CV_BGR2YCrCb);
        /********skin detec****************/ 
        for(int i=0; i<(src->height);i++)
        for(int j=0;j<src->width;j++)
        {  
            w = cvGet2D(YCrCb,i,j);
           Y = w.val[0];
           Cr= w.val[1];
           Cb= w.val[2];
           if ((Y>=60)&&(Y<=250)&&(Cr<210)&&(Cr>140)&&(Cb<130)&&(Cb>90))
           {
              data[i*(YCC->widthStep) + j*(YCC->nChannels) + 0 ]=255;
              data[i*(YCC->widthStep) + j*(YCC->nChannels) + 1 ]=255;
              data[i*(YCC->widthStep) + j*(YCC->nChannels) + 2 ]=255;
           }
           else
           {
              data[i*(YCC->widthStep) + j*(YCC->nChannels) + 0 ]=0;
              data[i*(YCC->widthStep) + j*(YCC->nChannels) + 1 ]=0;
              data[i*(YCC->widthStep) + j*(YCC->nChannels) + 2 ]=0;
           }
        }
     }
        cvThreshold(YCC, YCC ,50, 255, CV_THRESH_BINARY );
        cvCvtColor(YCC, YCC, CV_YCrCbRGB);
        cvCvtColor(YCC, gray, RGB2GRAY);
         cvSmooth(gray, hsv_mask, CV_MEDIAN, 27, 0, 0, 0};
	cvFindContours( YCC, storage, &contours, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_NONE, cvPoint(0,0) );
	CvSeq* contours2 = NULL;
	double result = 0, result2 = 0;
	while(contours)
	{
            result = fabs( cvContourArea( contours, CV_WHOLE_SEQ ) );
	    if ( result > result2) {result2 = result; contours2 = contours;};
	    contours  =  contours->h_next;
	} 
	//gesture recognition 
         if (contours2)
	{
	   CvRect rect = cvBoundingRect( contours2, 0 );//畫出手外圍橢圓 
	   cvRectangle( bg, cvPoint(rect.x, rect.y + rect.height), cvPoint(rect.x + rect.width, rect.y), CV_RGB(0, 0, 255), 1, 8, 0 );
	  int checkcxt = cvCheckContourConvexity( contours2 );
	  CvSeq* hull = cvConvexHull2( contours2, 0, CV_CLOCKWISE, 0 );
	  CvSeq* defect = cvConvexityDefects( contours2, hull, dftStorage );
	  if( defect->total >=40 ) {cout << " Closed Palm " << endl;}
          else {cout << " Open Palm " << endl;}
	  cout << "defet: " << defect->total << endl;
	CvBox2D box = cvMinAreaRect2( contours2, minStorage );
 	cvCircle( bg, cvPoint(box.center.x, box.center.y), 3, CV_RGB(200, 0, 200), 2, 8, 0 );	
	cvEllipse( bg, cvPoint(box.center.x, box.center.y), cvSize(box.size.height/2, box.size.width/2), box.angle, 0, 360, CV_RGB(220, 0, 220), 1, 8, 0 );
	IplImage* contour = cvCreateImage( sz, 8, 3 );
	
         cvDrawContours( bg, contours2,  CV_RGB( 255, 0, 0), CV_RGB( 0, 0, 100), 1, 4, 8, cvPoint(0,0));
	cvShowImage( "src", src)
	cvNamedWindow("bg",0); 
	cvShowImage("bg",bg); 
	cvReleaseImage( &bg);
	c = cvWaitKey( 1000);
	}
	cvReleaseCapture( &capture);
	cvDestroyAllWindows();
}

Posted 13-Dec-10 23:25pm

the_same

Updated 13-Dec-10 23:30pm

JF2015

v2

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Comments

JF2015 14-Dec-10 5:30am

Edited to correct code formatting.

CPallini 14-Dec-10 6:49am

Please report the exact error message and, above all, have a look at the debugger window named 'call stack' (on Visual Studio) where you may find useful info.

Dave Kreskowiak 14-Dec-10 11:01am

You're going to have to point out the line that throws the error. A StackOverflow usually means code is constantly calling itself, but never returns to the caller, therefore running the Stack out of space.

thatraja 26-Dec-10 2:58am

Include the error message in your question

aslican1988 7-Jul-11 15:51pm

YCrCb color space Real Time Hand Posture/Gesture Recognition with OpenCV

http://www.youtube.com/watch?v=kQxiFaZbOfA

TRK3 7-Jul-11 15:58pm

Very cool!

Sergey Alexandrovich Kryukov 7-Jul-11 17:31pm

Great thing! Who is the author of this stuff, do you know?
--SA

Sergey Alexandrovich Kryukov 7-Jul-11 16:06pm

"Stack over"?! "Game overflow"!
--SA

harish85 7-Jul-11 16:32pm

I am just curious ,what do you do in this program?.

2 solutions

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Answer 1 · 2011-07-07T10:21:00

Hopefully, there is not need to look at this pretty long code dump. Also, your bug can be somewhere else. The error you are reporting must be "Stack overflow". This kind of error is pretty easy to investigate.

Too bad you don't indicate the line of code where the exception is thrown. I never understood it. Do you run the code not under debugger? Why?

It always happen in the case of recursion or mutual recursion which never ends, see http://en.wikipedia.org/wiki/Recursion[^], http://en.wikipedia.org/wiki/Recursion_(computer_science)[^].

First, you need to run the code under debugger, run into exception and look at the call stack to get an idea where the most recent call (on the top of current stack) come from. Pay attention for repeating calls the the same functions or a couple of the same functions (or more).

If you still don't see why recursion is never ended, try to find a place for a break point which would break execution before exception is thrown. A good idea is to put it at the beginning of one of the function which is called repeatedly. Form a break point, run step by step until you run into exception (than next time remember this point and use debugger's "Step into" instead of "Step over") or find a pattern absurdly leading to infinite calls deeper into the stack. This search will always converge to a solution; and very likely you will figure the problem well before you follow all the detail of the code in debug mode.

—SA

pavanshanbhag · Answer 2 · 2011-09-01T06:19:00

Solution 3

**** u !! wat d hell code is ful of errors!! how can any 1 create .exe file out of it

Posted 1-Sep-11 6:19am

pavanshanbhag

hand detection using opencv in ycrvb color model

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hand detection using opencv in ycrvb color model

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