Motion vector estimator

Details Motion vector estimator Motion vector estimator

1995-06-22

1996-11-26

Chin, Tommy P.

Television

Image signal processing circuitry specific to television

Motion vector generation

348700, H04N 728, H04N 732

Patent

active

055790593

ABSTRACT:
An improved motion vector extractor comprising a first pixel delay element for delaying pixel data of the previous frame by a one pixel interval, a second pixel delay element for delaying the pixel data of the previous frame by a horizontal line interval of a seek block, a third pixel delay element for delaying the pixel data of the previous frame by a seek block horizontal line and one pixel interval, an interpolation circuit for combining the pixel data of the previous frame and the delayed pixel data of the previous frame from the first to third pixel delay elements to produce at least one interpolation pixel data positioned between adjacent ones thereof, a fourth pixel delay element for delaying pixel data of the present frame to produce rectangularly arranged pixel data of the present frame, a plurality of MAD detectors, each of the plurality of MAD detectors subtracting a corresponding one of the interpolation pixel data from the interpolation circuit from a corresponding one of the rectangularly arranged pixel data of the present frame from the fourth pixel delay element to produce an MAD with respect to the corresponding pixel data of the present frame, and a comparator for comparing the MADs from the plurality of MAD detectors with one another and extracting a motion vector in accordance with the compared result.

REFERENCES:
patent: 4730217 (1988-03-01), Tonge et al.
patent: 5142360 (1992-08-01), Niihara
patent: 5173865 (1992-12-01), Koike et al.
patent: 5212548 (1993-05-01), de Haan et al.
patent: 5406501 (1995-04-01), Florent
patent: 5448310 (1995-09-01), Kopet et al.
patent: 5477272 (1995-12-01), Zhang et al.
patent: 5497203 (1996-03-01), Kayashima et al.

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