Finding the center of a contour using opencv and visual c++

I want to find the center of a contour without doing so much calculations. Is there a built in function for that in opencv?

Solution 1:

for the 'geometric center', get the boundingRect() of the contour, then:

   cx = br.x+br.width/2; cy = br.y+br.height/2;

for the 'center of mass' get the moments() of the contour, then:

   cx = m.m10 / m.m00;   cy = m.m01 / m.m00;