Television – Image signal processing circuitry specific to television – Motion dependent key signal generation or scene change...
Patent
1996-06-07
1999-09-28
Lee, Michael
Television
Image signal processing circuitry specific to television
Motion dependent key signal generation or scene change...
348722, 348593, 382173, H04N 514
Patent
active
059596970
ABSTRACT:
A method and system for detecting dissolve transitions in a digital video signal made up of a series of video images is disclosed. In accordance with the method of the invention, a plurality of the video images are segmented into a number of cells wherein each cell comprises a number of pixels each having a pixel intensity value representing the intensity of the pixel. A plurality of cell contrast vectors each associated with one of the segmented video images is generated. Each element of the cell contrast vector is associated with one of the cells and comprises the standard deviation of the pixel intensity values for the pixels in that cell. A dissolve is detected for a video image in response to the cell contrast vector for that image.
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Electronic Data Systems Corporation
Griebenow L. Joy
Lee Michael
Wille David G.
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