Television – Image signal processing circuitry specific to television – Special effects
Patent
1994-08-09
1997-03-04
Lee, Michael
Television
Image signal processing circuitry specific to television
Special effects
348590, 348586, 348441, H04N 5262, H04N 712
Patent
active
056084641
ABSTRACT:
A digital video effects generator includes: means for up-sampling the digital video component signals prior to their spatial transformation and linear interpolation, thereby reducing losses due to the (sin x)/x frequency response of the sampled video signal; means for spatially-mapping video motion data representing the degree of video data motion between temporally adjacent video frames and for motion adaptive interpolation to selectively blend interpolated video field data in accordance therewith; means for pre-transform keying, thereby allowing two video signal transformations to be keyed simultaneously; means for selectively transforming portions of input video signals, thereby allowing selective keying of non-spatially transformed video into selected regions of the video image; means for selectively linking keyframes within separate effects and providing smooth parametric transitions therebetween, thereby allowing several separate effects to be combined into a single effect with smooth parametric transitions between the linked (inter-effect) keyframes; and means for maintaining "pinned" image corners during parametric transitions between keyframes.
REFERENCES:
patent: 4870481 (1989-09-01), Kawamata
patent: 5369443 (1994-11-01), Woodham
Lee Michael
Scitex Corporation Ltd.
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