Kristou Says

This an example on how to use morphological operator in OpenCV to close gaps.

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

{

IplImage *image;

IplImage *dilated_image;

IplImage *eroded_image;

image = cvLoadImage ("triangle.jpg");
dilated_image = cvCloneImage (image);

eroded_image = cvCloneImage (image);
cvNamedWindow ("Original", 1);

cvNamedWindow ("Dilated", 1);

cvNamedWindow ("Eroded", 1);
cvShowImage ("Original", image);
cvDilate (image, dilated_image, 0, 7);

cvShowImage ("Dilated", dilated_image);
cvErode (dilated_image, eroded_image, 0, 6);

cvShowImage ("Eroded", eroded_image);
cvWaitKey ();
cvReleaseImage (&image);

cvDestroyWindow ("Original");

cvReleaseImage (&dilated_image);

cvDestroyWindow ("Dilated");

cvReleaseImage (&eroded_image);

cvDestroyWindow ("Eroded");
return 0;

}