Method and apparatus for automatic electronic replacement of billboards in a video image
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United States of America Patent
Stats
-
Sep 18, 2001
Grant Date -
N/A
app pub date -
Jun 2, 1998
filing date -
Sep 8, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for automatic replacement of a billboard in a video image is provided. The billboard comprises a chroma-key surface, and the apparatus includes a video camera for viewing the billboard, and a chroma-key unit operative to detect at least one chroma-key color of the billboard chroma-key surface. A reference color of the chroma-key unit is adjustable to conform to the color of the chrom-key surface, thereby enabling the chroma-key unit to correctly identify the billboard surface and to correctly replace the chroma-key surface of the billboard by a virtual advertisement in a video image with correct occlusion of any foreground object.
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Cited Art Landscape
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