Motion estimation method by employing a stochastic sampling...

Details Motion estimation method by employing a stochastic sampling... Motion estimation method by employing a stochastic sampling...

2006-02-07

2006-02-07

Wong, Allen (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240000, C375S240010, C375S240120

Reexamination Certificate

active

06996181

ABSTRACT:
In a motion estimation method for use in encoding a moving picture, a full-pixel motion vector is estimated by stochastically sampling a pixel to be processed in a predetermined-sized block of a previous frame or a next frame as a reference frame for each of a plurality of equal-sized blocks in a current frame. Then, a half-pixel motion vector is estimated based on the full-pixel motion vector. Accordingly, both the calculation amount and the calculation time required for the motion estimation are effectively reduced. Further, it can be prevented that the hardware becomes complicated.

REFERENCES:
patent: 5488419 (1996-01-01), Hui et al.
patent: 5587741 (1996-12-01), Kim
patent: 5936672 (1999-08-01), Ahnn

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