Motion estimation for digital video with reduced number of searc

Details Motion estimation for digital video with reduced number of searc Motion estimation for digital video with reduced number of searc

1998-01-23

2000-10-24

Tung, Bryan

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

3484161, 348699, H04N 736

Patent

active

061378372

ABSTRACT:
A method and apparatus for efficient motion estimation of a digital video image wherein memory capacity and processing requirements are reduced by 50% or more, and image quality is maintained. Only a portion of the pixel data of a search window is used to perform motion estimation. Specifically, a portion of the pixel data of a previous image is retrieved and stored in a memory according to a search window pattern such as a fixed checkerboard pattern. Pixel data from the current image is alternated between first and second inverse checkerboard patterns for successive comparison regions of the search window. The scheme is compatible with frame or field mode video sequences.

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