Image processing device and image processing method
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United States of America Patent
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Mar 12, 2002
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N/A
app pub date -
Dec 14, 1998
filing date -
Dec 15, 1997
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Abstract
According to the image processing method, when the number of shadow polygons existing between a depth position of pixels of ordinary polygons subject to shadowing and an infinite position is counted and that number is an odd number, those pixels are unconditionally judged to be positioned inside a region of shadow volume. Therefore, regions to undergo shadowing can be efficiently detected by judging whether the number is an odd number or an even number at all pixel positions.
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