pibbs's profile - activity

Worked well for me! To compare whether two contours are nested, and to find the biggest one:

• minAreaRect(); for both contours
• pointPolygonTest() for each contour and the other contour's center
• If the signs of both pointPolygonTest() calls are positive, they are concentric
• the outermost contour has the largest area, compute with contourArea()