Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1993-05-13
1994-07-12
Powell, Mark R.
Television
Image signal processing circuitry specific to television
Motion vector generation
348402, H04N 700
Patent
active
053293185
ABSTRACT:
A method is provided for performing motion estimation in a system having a test image and a plurality of candidate images. A candidate image is selected and the difference between the test image and the selected candidate image is determined. The motion of an image is estimated according to this differencing and a determination is made of the duration of the motion estimation process in the system of the present invention. The candidate image selection, the differencing and the motion estimation are then repeated according to the duration determination. The duration determination may be a determination of a time duration or a determination of a number of machine cycles. The system is adapted to iteratively decrease a measurement of the error between the test image and selected candidate images as these actions are repeated. When the error stops decreasing and begins increasing the assumption is made in the system of the present invention that a best match has been determined. Thus a best match is iteratively determined unless a time out occurs first.
REFERENCES:
patent: 5151784 (1992-09-01), Lavagetto et al.
patent: 5198901 (1993-03-01), Lynch
Dautremont James H.
Intel Corporation
Murray William H.
Powell Mark R.
Silverman Carl L.
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