Image analysis – Image compression or coding – Interframe coding
Patent
1996-12-19
1999-08-24
Boudreau, Leo H.
Image analysis
Image compression or coding
Interframe coding
382173, G06K 900
Patent
active
059434457
ABSTRACT:
Video data representing a scene are processed to improve encoding efficiencies. The video data are segmented into rigidly and non-rigidly moving video objects. The segmentation is preformed by estimating local motion vectors for the video data of a sequence of frames. The local motion vectors are clustered to determine dominant motions, and video data having motion vectors similar to the dominant motions are segmented out as rigidly moving video objects. For these objects, motion parameters are robustly estimated. Using the motion parameters, the rigid video objects of the frames are integrated in one or more corresponding sprites stored in a long-term memory. The sprites can be used in a two-way motion compensated prediction technique for encoding video data where blocks of video data are encoded either from sprites based on rigid motion parameters, or from a previous frame based on local motion parameters. In addition, the sprites can be used to construct a high resolution panoramic view of the background of a scene.
REFERENCES:
patent: 4639878 (1987-01-01), Day et al.
patent: 4689022 (1987-08-01), Peers et al.
patent: 4906940 (1990-03-01), Greene et al.
patent: 4969036 (1990-11-01), Bhanu et al.
patent: 5144149 (1992-09-01), Frosch
patent: 5428387 (1995-06-01), Galt et al.
patent: 5448053 (1995-09-01), Rhoads
patent: 5585862 (1996-12-01), Wuertele et al.
patent: 5734441 (1998-03-01), Kondo et al.
Model-based 2D & 3D Dominant Motion Estimation for Mosaicing and Video Representation, Sawhney et al., Int. Conf. on Computer Vision, Cambridge, Mass., Jun. 1995, copyright 1995: IEEE. (See also: ftp://eagle.almaden.ibm.com) (pp. 583-590).
Efficiency Analysis and Application of Uncovered Background Prediction in a Low Bit Rate Image Coder, Dietmar Hepper, IEEE Transactions on Communications, vol. 38, No. 9, Sep. 1990(pp. 1578-1584).
Uncovered Background Prediction in Interfram Coding, Mukawa et al., IEEE Transactions on Communications, vol. COM-33, No. 11, Nov. 1985. pp. 1227-1231.
Salient Video Stills: Content and Context Preserved, Teodosio et al. (MIT Media Lab), Proceedings of the ACM Multimedia Conference, Anaheim, Aug. 1993.(Page number: not specified).
Boudreau Leo H.
Digital Equipment Corporation
Tadayon Bijan
LandOfFree
Dynamic sprites for encoding video data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dynamic sprites for encoding video data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic sprites for encoding video data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-474534