Video luminance self keyer

Details Video luminance self keyer Video luminance self keyer

1988-09-19

1990-08-07

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 5272

Patent

active

049472550

ABSTRACT:
An improved luminance video self keyer extracts a key signal from an unshaped input video signal as a function of a low and a high clip level. The input video signal is subsequently "shaped" as a function of the key signal and the low clip level. The result is a shaped video signal and an associated key signal that are combined with a secondary video signal without resorting to double multiplication of the input video signal by its associated key signal to produce a desired combination of the two video signals.

REFERENCES:
patent: 4386363 (1983-05-01), Morrison
patent: 4488169 (1984-12-01), Yamamoto
patent: 4506289 (1985-03-01), Shirakami
patent: 4758892 (1988-07-01), Bloomfield

Affiliated with

Also associated with

Rating

Video luminance self keyer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video luminance self keyer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video luminance self keyer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-964235