Apparatus and method for transforming a video image into a three

Details Apparatus and method for transforming a video image into a three Apparatus and method for transforming a video image into a three

1993-04-06

1994-11-01

Powell, Mark R.

Television

Image signal processing circuitry specific to television

Special effects

348 44, 345139, 395125, 395126, H04N 5262, G06F 1562, G06F 1572

Patent

active

053611004

ABSTRACT:
There is described a video special effects apparatus 1 comprising: transforming means 2, 10, 12, 14 for mapping an input video image (FIG. 3A) onto a three-dimensional surface (FIG. 3B) to form a transformed image; luminance level calculating means 16 for calculating luminance levels I.sub.out for parts of said transformed image to produce an effect of a positive light source P generating positive light that increases luminance levels of parts of said transformed image corresponding to parts of said three-dimensional surface where said positive light is incident and a negative light source N generating negative light that decreases luminance levels of parts of said transformed image corresponding to parts of said three-dimensional surface where said negative light is incident; and luminance level control means 6 for controlling luminance levels of parts of said transformed image in dependence upon said calculated luminance levels.

REFERENCES:
patent: 4525858 (1985-06-01), Cline et al.
patent: 4791581 (1988-12-01), Ohba
patent: 4835712 (1989-05-01), Drebin et al.
patent: 4943938 (1990-07-01), Aoshima et al.
patent: 4965844 (1990-10-01), Oka et al.
patent: 5043922 (1991-08-01), Matsumoto
patent: 5103217 (1992-04-01), Cawley

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