Method of and apparatus for detecting a motion of image informat

Details Method of and apparatus for detecting a motion of image informat Method of and apparatus for detecting a motion of image informat

1996-07-02

1998-05-12

Tung, Bryan S.

Television

Bandwidth reduction system

Data rate reduction

348699, 386111, H04N 732

Patent

active

057513643

ABSTRACT:
A method of detecting a motion in image information includes a step of determining differential processing data by way of full search block matching, a step of processing a differential, and a step of generating differential processing data. The step of processing a differential includes a step STg1 for electing a motion vector, a step STg2 for establishing an area according to the selected motion vector, and a step STg3 for effecting full search block matching using the established area. The step of generating differential processing data includes a step STh1 for searching for a reverse region with an obtained motion vector, a step STh2 for calculating addresses of all macroblocks in the reverse region, a step STh3 for registering the differential processing data, a step STh4 for deciding whether one image frame is finished or not, a step STh5 for deciding whether there is a scene change or not, and a step STh6 for deciding whether a processing sequence is finished or not. The above method is capable of detecting an accurate motion in a short period of time, thereby increasing the efficiency of encoding image information.

REFERENCES:
patent: 4897720 (1990-01-01), Wu et al.
patent: 5005078 (1991-04-01), Gillard
patent: 5317397 (1994-05-01), Odaka et al.

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