Moving picture encoding method and moving picture encoding apparatus
AssigneeNEC Corporation
InventorHiroyuki Ishikawa
Life of this patent
Estimating the term…
Abstract
In a moving picture encoding method and a moving picture encoding apparatus of the present invention, after calculating an absolute value of a difference for every corresponding pixel data between continuous two frames, an interframe difference calculation means 13 calculates an average value per frame and an average value per scene of the absolute value of the difference, and a scene change determination means 14 determines that a scene change has occurred, when the average value per frame is more than or equal to a predetermined number times as large as the average value per scene, and in case that the scene change is detected by the scene change determination means 14, a frame type change means 15 changes a frame type so that interframe predictive coding is not conducted.
Claims20
A moving picture encoding method, comprising:
- calculating an absolute value of a difference for every corresponding pixel data between continuous two frames, the continuous two frames corresponding to a current frame and a most previous adjacent frame;
- calculating, for said current frame, an average value per frame and an average value per scene of said absolute value of said difference;
- comparing said average value per frame with said average value per scene;
- and
- detecting a scene change of a moving picture between said current frame and said most previous adjacent frame as a result of the comparing.
A moving picture encoding apparatus comprising:
- calculation means for, after calculating an absolute value of a difference for every corresponding pixel data between continuous two frames, calculating an average value per frame and an average value per scene of said absolute value of said difference, the continuous two frames corresponding to a current frame and a most previous adjacent frame;
- and
- determination means for comparing said average value per frame with said average value per scene, and for detecting a scene change of a moving picture as a result of the comparing.
Dependencies are inferred from the claim text.