Scene-change detection method that distinguishes between gradual

Details Scene-change detection method that distinguishes between gradual Scene-change detection method that distinguishes between gradual

1996-10-30

1998-09-01

Tung, Bryan

Television

Special applications

Observation of or from a specific location

348700, H04N 718

Patent

active

058017658

ABSTRACT:
A video for one frame is captured and two adjacent frames are compared, the result of which is detected as a change degree of the video. Then, based on the magnitude of the change degree, it is determined whether a scene change (SC) exists. If an SC exists, it is examined whether its change degree alters rapidly or gradually, to determine the SC as a momentum or gradual SC. For the momentum SC, its determination point is detected as the momentum SC. For the gradual SC, its determination points is detected as the start of the gradual SC, thereafter, its end is detected. According, for one gradual SC, plural SC's are not detected and a midway illegible video is not indicated as an index picture.

REFERENCES:
patent: 4677466 (1987-06-01), Lert, Jr. et al.
patent: 5455561 (1995-10-01), Brown
patent: 5589884 (1996-12-01), Ohguchi
patent: 5654772 (1997-08-01), Mester et al.
"Automatic indexing method and object search method for color video picture", Johoshori Gakkai theses, vol. 33, No. 4, Apr., 1992.

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