Programmable architecture and methods for motion estimation

Details Programmable architecture and methods for motion estimation Programmable architecture and methods for motion estimation

1996-08-06

1999-05-04

Kelley, Christopher S.

Image analysis

Image compression or coding

Interframe coding

G06K 900

Patent

active

059012480

ABSTRACT:
A programmable motion estimator includes one dual ported memory for storing an image block, the prediction error, and a temporary block used in interpolation, and a pixel-group random access dual ported memory for storing a search window. The two ports of the two memories are selectively applied to an arithmetic logic unit, or ALU, through a multiplexer. One output of the ALU provides an absolute difference, which is furnished to a tree adder. Another output of the ALU provides an average value or a difference value, as selected, which is routed to the inputs of the image memory and the search memory. Among other tasks, the programmable motion estimator performs motion vector searching, half pixel interpolation, quarter pixel interpolation and error prediction determination.

REFERENCES:
patent: 4200861 (1980-04-01), Hobach et al.
patent: 4641350 (1987-02-01), Bunn
patent: 5163101 (1992-11-01), Deering

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