Real time motion vector processing of image data

Details Real time motion vector processing of image data Real time motion vector processing of image data

1995-11-06

1998-05-05

Lee, Richard

Television

Bandwidth reduction system

Data rate reduction

348699, H04N 732

Patent

active

057482489

ABSTRACT:
Telescopic predictive coding of video frames reduces the number of pixels in a reference frame which are required to be processed. However, given that offsets for adjacent blocks may differ, it is difficult to parallel process for real-time coding. After first-frame motion vectors have been calculated, a region of the reference pixels is read which is large enough to accommodate the direct calculation of motion vectors for the second frame, thus allowing pixel values to be processed in parallel. However, although all of the read pixels are made available to each processor, the processors only latch the values which are actually required for the particular motion vector being calculated. This is achieved by supplying an enabling signal to the processors, which is determined by processing the first-frame motion vectors.

REFERENCES:
patent: 4982285 (1991-01-01), Sugiyama
patent: 5083202 (1992-01-01), Parke
patent: 5132792 (1992-07-01), Yonemitsu et al.
patent: 5173773 (1992-12-01), Ueda et al.
patent: 5198901 (1993-03-01), Lynch
patent: 5293229 (1994-03-01), Iu
patent: 5317397 (1994-05-01), Odaka et al.

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