Television – Image signal processing circuitry specific to television – Motion dependent key signal generation or scene change...
Reexamination Certificate
2006-05-09
2006-05-09
Le, Vu (Department: 2616)
Television
Image signal processing circuitry specific to television
Motion dependent key signal generation or scene change...
C375S240260
Reexamination Certificate
active
07042525
ABSTRACT:
A video segmentation system generates an S-distance measurement that is a representation of the similarity between adjacent frames of a video sequence. The video segmentation system employs frequency decomposition of a direct current (DC) luminance signal of a compressed video sequence. High and low frequency component signatures are generated from a frequency-decomposed signal using wavelet transformation. A cut detector identifies cut transitions from the low frequency component signature. A fade detector identifies fade transitions the high frequency component signature. A dissolve transition detector employs a double frame differencing algorithm to identify dissolve transitions. A video retrieval system likewise generates an S-distance between a query image and a database image. The video retrieval system employs the low and high frequency component signature to generate the S-distance measurement of the similarity between the query image and the database image. The results of the S-distance measurement allow browsing and searching of the similar database images.
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Czekaj Dave
Le Vu
Matsushita Electric - Industrial Co., Ltd.
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