Question

How would I draw a CvBox2D in OpenCV?
Is there any similar function to cvRectangle?

CODE EXAMPLES WOULD BE APPRECIATED

Thanks

Answer 1

There isn’t a function like cvRectangle for CvBox2D. This is the structure of CvBox2D:

typdef struct {
CvPoint2D32f center;
CvSize2D32f size;
float angle;
} CvBox2D;

You can use cvBoxPoints to get the points of the rectangle and then draw the rectangle as a set of lines.

void cvBoxPoints(CvBox2D box, CvPoint2D32f pt[]);

You can even use cvPolyLine to draw the lines easier.

void cvPolyLine(CvArr* img, CvPoint** pts, int* npts, int contours, int isClosed, CvScalar color, int thickness=1, int lineType=8, int shift=0 )