Claims
- 1. A scene-change detector for detecting a scene-change of a moving image composed of a plurality of frames, comprising,
- a means for determining an encoding mode of encoded data of each of a plurality of split areas from among a plurality of potential encoding modes, said split areas dividing each of said plurality of frames of said moving image;
- a means for counting a number of occurrences of each of said plurality of encoding modes of the encoded data;
- a means for determining a frame mode for each frame from among a plurality of frame modes, each of the plurality of frame modes being defined by a set of the plurality encoding modes which are used for encoding split areas in a frame of the frame mode ;
- a means for storing data of said number of occurrences of each encoding mode and data of corresponding frame modes for at least two frames; and
- a means for outputting a signal showing a scene-change when said stored number of occurrences and said stored corresponding frame modes are in accordance with one of a plurality of a predetermined conditions.
- 2. A scene-change detector described in claim 1, wherein said plurality of encoding modes include a first encoding mode for encoding said moving image using the information of a present frame, a second encoding mode for encoding said moving image using information of a frame already encoded and positioned in past on a time axis, a third encoding mode for encoding said moving image using information of a frame already encoded and positioned in future on the time axis, and a fourth encoding mode for encoding said moving image using information of a frame already encoded and positioned in past on the time axis and information of another frame already encoded and positioned in future on the time axis.
- 3. A scene-change detector described in claim 2, wherein said plurality of frame modes include a first frame mode for encoding using only said first encoding mode, a second frame mode for encoding using either of said first encoding mode or said second encoding mode, and a third frame mode encoded using any encoding mode selected from among said first to fourth encoding modes.
- 4. A scene-change detector described in claim 1, wherein said detector further comprises a means for demultiplexing the data showing a kind of a used encoding mode from an input signal including moving image data.
Priority Claims (3)
Number |
Date |
Country |
Kind |
4-083049 |
Mar 1992 |
JPX |
|
4-141089 |
May 1992 |
JPX |
|
4-351615 |
Dec 1992 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/024,739, filed Mar. 1, 1993, now abandoned.
US Referenced Citations (15)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2-174387 |
Jul 1990 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
24739 |
Mar 1993 |
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