System, method, and computer program product for real time transparency-based compositing
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Sep 19, 2002
app pub date -
May 15, 2002
filing date -
Jul 18, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system, method, and computer program product for compositing rendered image data in near real time. The input pixel streams that constitute the rendered image data can be video streams, for example. Each input pixel stream can originate from its own graphics processing unit. Each pixel includes a set of color coordinates, such as red, green, and blue (RGB) coordinates, plus an alpha value. Compositing is performed by an image combiner implemented in either hardware or software. The image combiner accepts two or more input pixel streams, and performs compositing on corresponding pixels from each input pixel stream. The compositing process takes into account the color coordinates of each corresponding pixel as well as the alpha values. The compositing process also uses depth information that defines whether a given pixel is in the foreground or in the background relative to another corresponding pixel. The result of the compositing process is a resultant pixel stream based on corresponding pixels of each input pixel stream.
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