Multi-standard adaptive chrominance separator

Details Multi-standard adaptive chrominance separator Multi-standard adaptive chrominance separator

1985-09-27

1987-08-18

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 978

Patent

active

046880801

ABSTRACT:
An adaptive chrominance separator is provided which responds to horizontal high frequency luminance detail as well as to vertical chrominance detail. The luminance and chrominance levels are detected and an adaptive decision is made, depending upon the relative levels, of whether to use a bandpass filter, a comb filter or the averaged outputs of both filters, to provide more accurate separation of the chrominance.

REFERENCES:
patent: 4050084 (1977-09-01), Rossi
patent: 4072984 (1978-02-01), Kaiser
patent: 4456921 (1984-06-01), Hess
patent: 4498100 (1985-02-01), Bunting
Watkinson, "Variable-Speed Video Playback", Feb. 85, Electronics and Wireless World, pp. 69-72.
Kaiser, "Comb Filter Improvement with Spurious Chroma Deletion", SMPTE Journal, Jan. 77, vol. 86, No. 1, pp. 1-5.

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