Opencv and code blocks troubleshooting

Asked By pria.v03 0 points N/A Posted on - 03/18/2012

I'm getting an undefined reference to cv::Mat::Mat error when i compile this program

#include <opencv/cv.h>

#include <highgui.h>

#include <stdio.h>

#include <limits>

#include <stdlib.h>

using namespace cv;

using namespace std;

IplImage* g_image = NULL;

IplImage* g_gray = NULL;

int g_thresh = 100;

CvMemStorage* g_storage = NULL;

void on_trackbar(int)

{

if( g_storage == NULL )

{

g_gray = cvCreateImage( cvGetSize( g_image ), 8, 1 );

g_storage = cvCreateMemStorage(0);

}

else

{

cvClearMemStorage( g_storage );

}

CvSeq* contours = 0;

cvCvtColor( g_image, g_gray, CV_BGR2GRAY );

cvThreshold( g_gray, g_gray, g_thresh, 255, CV_THRESH_BINARY );

cvFindContours( g_gray, g_storage, &contours );

cvZero( g_gray );

if( contours )

{

cvDrawContours(

g_gray,

contours,

cvScalarAll(255),

100 );

}

cvShowImage( "Contours", g_gray );

}

Rect boundingRect ( const CvSeq* contour )

{

// Points initialization

Point min ( std::numeric_limits<int>::max(),std::numeric_limits<int>::max() );

Point max ( std::numeric_limits<int>::min(),std::numeric_limits<int>::min() );

// Getting bounding box coordinates

for( int i=0; i<contour->total; ++i )

{

CvPoint* p = CV_GET_SEQ_ELEM( CvPoint, contour, i );

printf(" (%d,%d)n", p->x, p->y );

if ( p->x > max.x ) max.x=p->x;

if ( p->x < min.x ) min.x=p->x;

if ( p->y > max.y ) max.y=p->y;

if ( p->y < min.y ) min.y=p->y;

}

return Rect ( min.x,min.y,max.x-min.x+1,max.y-min.y+1 );

}

int main(int argc, char * argv[])

{

vector<vector<Point> > v;

g_image = cvLoadImage( "sample1.jpg" );

cvNamedWindow( "Contours", 1 );

//cvCreateTrackbar( "Threshold", "Contours", &g_thresh, 255, on_trackbar );

//on_trackbar(0);

if( g_storage == NULL )

{

g_gray = cvCreateImage( cvGetSize( g_image ), 8, 1 );

g_storage = cvCreateMemStorage(0);

}

else

{

cvClearMemStorage( g_storage );

}

CvSeq* contours = 0;

cvCvtColor( g_image, g_gray, CV_BGR2GRAY );

cvThreshold( g_gray, g_gray, 160, 255, CV_THRESH_BINARY );

cvFindContours( g_gray, g_storage, &contours);

cvZero( g_gray );

if( contours)

{

cvDrawContours(

g_gray,

contours,

cvScalarAll(255),

100 );

}

cvShowImage( "Contours", g_gray );

int size = 0;

int i=0;

CvSeq* max;

for(CvSeq* c=contours; c!=NULL; c=c->h_next )

{

printf("Size of %d contour : %dn",i,c->total);

if((c->total)>size)

{

size=c->total;

max=c;

}

i++;

}

printf("Size of %d contour : %dn",i,max->total);

Rect rect = boundingRect(max);

Point pt1, pt2;

pt1.x = rect.x;

pt1.y = rect.y;

pt2.x = rect.x + rect.width;

pt2.y = rect.y + rect.height;

// Draws the rect in the original image and show it

cvRectangle(g_image, pt1, pt2, CV_RGB(255,0,0), 1);

cvNamedWindow( "Ejemplo", CV_WINDOW_AUTOSIZE );

imshow("Ejemplo", g_image );

cvWaitKey();

return 0;

}

Please help. I have included all libraries and set the path for search directories

Status: Open
Question Views: 1436
Answer Count: 1
Vote Up 0 Vote Down

Answer Accepted: No
Question Category: ProgScripting Languages

Answered By Michelle Bang 55 points N/A #127721