Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1996-01-03
1996-09-10
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Motion vector generation
348420, H04N 728
Patent
active
055550339
ABSTRACT:
Method of estimating motion of objects, applied to two-dimensional blocks which are successively scanned in an image, including the steps of determining a set of error data and a motion vector for each current block, and of creating "regions" formed from one block or from several adjacent blocks each having a single motion vector. This method is performed by a device which includes a coherence structure with: memory modules (M1, M4, M5) for storing the sets of error data of the current block, of the regions already formed and their respective numbers, respectively; working modules (R2 and R3) constituted by two fixed delays to be applied to the sets of error data of the left and upper regions which are candidates for attachment to the current block; computation modules (11, 12) for comparing the sets of error data of the current block and those of said candidate regions and for possibly deciding the attachment as a function of predetermined criteria; multiplexers (MUX1, MUX2, MUX3) for switching the data between the different modules, and a module (10) for controlling the operations of switching and computation.
REFERENCES:
patent: 4992870 (1991-02-01), Samad
Au A.
Chin Tommy P.
Goodman Edward W.
U.S. Philips Corporation
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