Patent ID: 6963605
Filing Date: 2005-11-08
Classification: H04N

Abstract:
1. Method for estimating the motion between two digital images I 1 and I 2 with luminance Y 1 and Y 2 and intended to generate for each point of coordinates x, y of the image I 2 a motion vector {right arrow over (d)}(x, y)=(d x , d y ) so as to form an image Î 2 from the image I 1 with luminance Ŷ 2 (x, y)=Y 1 (x+d x , y+d y ) which is an approximation of the image I 2 and comprising the following steps: (a)—defining an initial model of finite elements comprising a mesh whose nodes are points of the image I (b)—optimising globally the values of all the motion vectors of the model according to a differential method, (c)—applying said motion vectors to said mesh of the initial model so as to generate a moved mesh representative of the image Î (d)—determining faulty areas in said moved mesh, said faulty areas being determined so that they contain at least one or several meshes overturning or overlapping after applying the motion vectors, all said meshes of the moved meshwork overturning or overlapping after applying the motion vectors being contained in said faulty areas, (e)—creating a set S including all the nodes of the moved mesh contained in the faulty areas, (f)—taking up again the initial model defined in step (a), reinitialising the values of all the motion vectors of said initial model and re-optimising the values of the motion vectors of said model according to step (b) by excluding from the model the motion vectors of the nodes of said set S.