Video image processing

Details Video image processing Video image processing

1997-07-15

2000-11-21

Le, Vu

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

37524016, 3484161, 348699, H04N 712

Patent

active

061513636

ABSTRACT:
A method of generating motion vectors from a video signal, for use in motion compensation, is applicable to interlaced video signals. In the method alternate video fields are shifted vertically so as to align the picture lines of interlaced fields, by moving the lines of one field up by half a picture line and the lines of the next field down by half a picture line. The fields of each resultant pair are compared to produce a set of motion vectors which can be used to motion compensate the video signal. The accuracy may be improved using temporal filters operative on correlation surfaces derived over tow or more field intervals.

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