Motion detection and estimation apparatus and method thereof

Details Motion detection and estimation apparatus and method thereof Motion detection and estimation apparatus and method thereof

1992-12-22

1996-01-30

Britton, Howard W.

Television

Image signal processing circuitry specific to television

Motion vector generation

348416, H04N 736

Patent

active

054884306

ABSTRACT:
Motion detection and motion estimation apparatus and method thereof. Motion detection becomes correct by taking horizontal/vertical changes of the incoming image into account. Also, motion direction and motion magnitude are detected and motion estimation can be made. The apparatus uses horizontal/vertical difference signals as certain critical values for motion detection judgement, detects left/right motion in the horizontal direction and up/down motion in the vertical direction by performing the exclusive-OR of horizontal/vertical difference signals and frame difference signals, and makes horizontal/vertical motion estimation possible by using a ratio of horizontal/vertical signal sums and frame difference signal sums with respect to a K.times.3 window.

REFERENCES:
patent: 4661846 (1987-04-01), Kondo
patent: 4979036 (1990-12-01), Smith
patent: 5027206 (1991-06-01), Vreeswijk

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