possible fix for ticket 380 (should not hurt camera calibration engine, as the fix only affects non-planar objects)
possible fix for ticket 380 (should not hurt camera calibration engine, as the fix only affects non-planar objects)

apavlenko/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv