| 摘要 |
An apparatus for filtering a foreground image to minimize visible noise in t he backing area and to preserve fine detail information of the foreground objects comprising a means (1) for generating a control signa l having a level proportional to the brightness and vis ibility of the colored backing; a means (3) for adjusting the level of the control sign al; a means (4) for subtracting the level matched contro l signal from the foreground video color signals; means (5, 6, 8, 9, 10) for processi ng foreground video color signals; a means (7, 11) for storing a video image defining boundary information determined by the processing means ; a means (12) for storing the foreground color signals; a means (13) for applying a predetermined amount of filtering to the video sig nals stored in storing means (12); a means (14) for stor ing the video image after the predetermined amount of filtering has been applied for subsequent processing by the compositing video signals.
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