Motion vector detection circuit and object tracking camera devic

Details Motion vector detection circuit and object tracking camera devic Motion vector detection circuit and object tracking camera devic

1995-10-20

1999-12-14

Rao, Anand S.

Television

Object tracking

348170, 348416, 348699, H04N 532, H04N 718

Patent

active

060024283

ABSTRACT:
A motion vector detection circuit includes a registration determining switch which sets a first registration determination mode wherein at an initial field, correlation values are evaluated by a correlator on the basis of integrated color data of a specific detection block being stored in a representative color memory and integrated color data of twenty-five (25) detection blocks being stored in an integrated color memory. A comparison circuit compares the correlation values with a predetermined threshold value, and if a condition that the threshold value is larger than the correlation value is satisfied in each of eighty (80) percents or more detection blocks, the integrated color data stored in the representative color memory is registered as a representative color of an object, and otherwise, no registration is performed. In a second registration determination mode set by the registration determining switch, the correlator evaluates correlation values on the basis of the integrated color data of the specific detection block and integrated color data of four (4) detection block.

REFERENCES:
patent: 5371536 (1994-12-01), Yamaguchi
patent: 5416513 (1995-05-01), Morisaki
patent: 5512974 (1996-04-01), Abe et al.
patent: 5546125 (1996-08-01), Tomitaka et al.
patent: 5574498 (1996-11-01), Sakamoto et al.

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