Image analysis – Image compression or coding – Interframe coding
Patent
1995-09-27
1998-05-26
Coles, Sr., Edward L.
Image analysis
Image compression or coding
Interframe coding
3582612, 358430, 358433, 348402, 348416, 348700, G06K 936, G06K 946, H04N 1417, H04N 514
Patent
active
057579687
ABSTRACT:
A method and apparatus for encoding a picture advantageously employed for encoding a picture. A plurality of input picture data are stored, and the quantity of the information of the input picture data from the plural stored picture data is evaluated for detecting a scene change. A GOP of a preset unit length, made up of a picture formed by compression by intra-frame coding and a picture formed by compression by inter-frame predictive coding, is selected based upon a scene change detection output and the input picture data is encoded in a pre-set manner in accordance with the selected GOP. By detecting a scene change and selecting the intra-frame coding as a compression method responsive to scene change detection, the compression efficiency is raised at a scene change portion of the input picture data where the correlation between previous and succeeding pictures is lowered.
REFERENCES:
patent: 5223949 (1993-06-01), Honjo
patent: 5319468 (1994-06-01), Honjo
patent: 5381275 (1995-01-01), Nitta et al.
patent: 5440345 (1995-08-01), Shimoda
patent: 5471450 (1995-11-01), Yonemitsu et al.
patent: 5510840 (1996-04-01), Yonemitsu et al.
patent: 5543846 (1996-08-01), Yagasaki
patent: 5592226 (1997-01-01), Lee et al.
Visual Communications and Image Processing '94, Chicago, IL., USA, 25-28 Sept. 1994, vol. 2308, pt. 2, ISSN 0277-786X, Proceedings of the Spie -The International Society for Optical Engineering, 1994, USA, pp. 1411-1422, XP 002035257 Lee J. et al.: "Adaptive frame type selection for low bit-rate video coding".
Coles Sr. Edward L.
Frommer William S.
Sony Corporation
Williams Kimberly A.
LandOfFree
Method and apparatus for video data compression does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for video data compression, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for video data compression will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1973657