Method for detecting a scene change and image editing apparatus

Details Method for detecting a scene change and image editing apparatus Method for detecting a scene change and image editing apparatus

1994-03-08

1996-02-20

Britton, Howard W.

Television

Image signal processing circuitry specific to television

Motion dependent key signal generation or scene change...

348403, H04N 730

Patent

active

054933455

ABSTRACT:
A method for detecting a scene change in an input image data composed of a plurality of frames. First, a DC component for each of blocks into which each of the frames is divided is calculated by orthogonal transformation such as discrete cosine transformation. An absolute value of the difference between the DC component of a current frame and the DC component of a frame adjacent to the current frame is calculated for each block of the current frame. The number of blocks for which the absolute value exceeds a first threshold value Is then counted, and a scene change between tile current frame and the adjacent frame is detected when the number of the blocks is higher than a second threshold value.

REFERENCES:
patent: 4689672 (1987-08-01), Furukawa et al.
patent: 5032905 (1991-07-01), Koga
patent: 5099322 (1992-03-01), Gove
patent: 5347310 (1994-09-01), Yamada et al.

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