Method and apparatus for transforming a two-dimensional video si

Details Method and apparatus for transforming a two-dimensional video si Method and apparatus for transforming a two-dimensional video si

1992-04-09

1994-01-25

Boudreau, Leo H.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

395127, 358 22, 358160, 382 41, G06K 900, G06F 1562

Patent

active

052822621

ABSTRACT:
A method and apparatus for transforming a two-dimensional input video signal onto a three-dimensional surface and for depicting illumination thereof by a spot light source transforms the two-dimensional video signal in accordance with a mapping data signal onto the three-dimensional surface. A spot light source signal including first and second data signals is generated, the first data signal representing the direction of the axis of a spot light source and the second data signal representing a radius of the spot light source. A spot light key signal is generated based on the second data signal and a distance signal representing distances between locations on the three-dimensional surface and the axis of the spot light source based on the first data signal and the mapping data signal. At least one of a luminance component and hue components of at least one of the two-dimensional video image signal and the transformed two-dimensional video image signal is modified in accordance with the spot light key signal.

REFERENCES:
patent: 4511337 (1985-04-01), Fortunato et al.
patent: 4943938 (1990-07-01), Aoshima et al.
patent: 4965844 (1990-10-01), Oka et al.
patent: 4985756 (1991-01-01), Kawabe et al.

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