| 摘要 |
Subsets of a video image ( 101 ) are analyzed to determine whether unauthorized playback-protected image is contained within the subsets. Regions of subsequent video images are prevented ( 210 ) from being displayed based upon whether the unauthorized playback-protected image is contained within the subsets. When a watermark is detected ( 220 ) within a video image, select areas ( 240 ) of the video image are included or excluded from subsequent watermark detection operations. When the inclusion/exclusion of an area results affects the ability to detect the watermark ( 260 ), a region that includes/excludes the area is identified ( 270 ) as a region that should not be displayed ( 210 ). The detection of other areas that affect the watermark detection results causes a redefinition ( 270 ) of the region to include/exclude the other areas.
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