Static image background reference for video teleconferencing app

Details Static image background reference for video teleconferencing app Static image background reference for video teleconferencing app

1994-06-21

1996-05-21

Kostak, Victor R.

Television

Two-way video and voice communication

User positioning

348 15, 348397, H04N 726

Patent

active

055194362

ABSTRACT:
An apparatus and method for partitioning video images into a first and second portion for more efficient compression/decompression and transfer across a network is disclosed. The present invention includes a video controller that stores a reference image with a plurality of reference pixels, receives a foreground image, compares the reference image with the foreground image thereby identifying matched pixels, and replaces the matched pixels in the foreground image with null pixels. The video controller also compresses the foreground image, and transfers the foreground image including null pixel values over a network.

REFERENCES:
patent: 4524421 (1985-06-01), Searby et al.
patent: 4602286 (1986-07-01), Kellar et al.
patent: 5216755 (1993-06-01), Walker et al.
patent: 5258836 (1993-11-01), Murata
patent: 5353063 (1994-10-01), Yagisawa et al.

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