Local relaxation method for estimating optical flow

Details Local relaxation method for estimating optical flow Local relaxation method for estimating optical flow

1997-03-14

1999-06-15

Trammell, James P.

Boots, shoes, and leggings

364152, 382236, G06F 1710

Patent

active

059128151

ABSTRACT:
A local relaxation method for estimating optical flow using a Poisson equation is provided. The local relaxation method includes the steps of a) determining the Poisson equation in a linear matrix of Gx=Ex+b according to a change of time, b) decoupling the determined velocity combination term of the Poisson equation, and c) applying a displaced frame difference of a temporal change to the Poisson equation where the velocity combination term is decoupled. Accordingly, the convergence speed is faster than that obtained using conventional technology. Also, in the case that a displaced frame difference is applied, the convergence value is accurate and motion in every pixel can be estimated in order to enhance image quality, and in the case of a video code, compression gain can be obtained by using a portion of a motion vector, i.e., the motion vector of a low band signal.

REFERENCES:
patent: 5119323 (1992-06-01), Nickerson et al.
patent: 5257209 (1993-10-01), Markandey
patent: 5631639 (1997-05-01), Hibino et al.

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