Patent ID: 6788802
Filing Date: 2004-09-07
Classification: G06T

Abstract:
An optical flow estimation method so adapted as to calculate optical flow for each sub-block on the basis of two images, partition the sub-blocks into a region having low confidence and a region having high confidence depending on the reliability of the optical flow, and fill the optical flow in the region having low confidence by dilation processing using the optical flow in its surrounding regionswherein confidence &ggr; is found, upon calculating from a 2Ã—2 matrix of coefficients G in the following equation (a) having as elements the squares of differentials in the vertical and horizontal directions of an image region &ohgr; and its eigenvalues, by the following equation (b) from the smaller eigenvalue &lgr;min and a gray scale residual E between the regions after tracking: G=&Sum;p&Element;Ï‰&it;â€ƒ&it;g&af;(p)&it;g&af;(p)T(a)Î³=Î»minE(b)