Television – Special applications – Film – disc or card scanning
Patent
1996-02-28
1998-10-13
Chin, Tommy P.
Television
Special applications
Film, disc or card scanning
348459, 386129, 386131, H04N 5253
Patent
active
058219919
ABSTRACT:
The invention provides methods and apparatus for performing inverse telecine processing on an input video frame sequence to be encoded. A method well-suited for use with mixed video/telecine material in MPEG-2 applications includes the steps of generating a vector of pixel difference scores for a given field in the sequence, dividing each difference score by its smallest adjacent score, filtering the result in a median-like filter, and correlating the divided and filtered scores with a reference vector characteristic of the sequence to generate a correlation metric which is thresholded to provide a field-match indicator for the given field. These steps are repeated for the other fields in the frame sequence, and the resulting repeat field indicators are processed to provide MPEG-2 compliant repeat field codes.
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patent: 5461420 (1995-10-01), Yonemitsu et al.
patent: 5500689 (1996-03-01), Lam
patent: 5521644 (1996-05-01), Sezan et al.
patent: 5563651 (1996-10-01), Christopher et al.
patent: 5604540 (1997-02-01), Howe
C-Cube Microsystems Inc.
Chin Tommy P.
Lee Y.
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