Compositing using multiple backdrops

Details Compositing using multiple backdrops Compositing using multiple backdrops

2006-05-09

2006-05-09

Razari, Michael (Department: 2672)

Computer graphics processing and selective visual display system

Computer graphics processing

Graphic manipulation

C345S592000

Reexamination Certificate

active

07042467

ABSTRACT:
Methods and apparatus, including computer program products, implementing techniques for compositing a digital image. The invention performs the steps of providing a current accumulation image; identifying as the current element of the digital image to be processed a graphics element having a backdrop property, the backdrop property identifying a backdrop image into which the element is to be blended; using the element and the backdrop image to create a modified backdrop image; obtaining a shape mask for the element; and crossfading the current accumulation image with the modified backdrop image using the shape mask. The result of the crossfading becomes the current accumulation image for any further compositing.

REFERENCES:
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patent: 6028583 (2000-02-01), Hamburg
patent: 6369830 (2002-04-01), Brunner et al.
J. D. Mulder, et al., “Pixel Masks for Screen-Door Transparency”, Visualization '98. Proceedings , 1998, Page(s): 351-358, 550.
Adobe Illustrator User Guide version 9.0, © 2000, Adobe Systems Incorporated, San Jose, CA, pp. 226-227.

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