Television – Bandwidth reduction system – Data rate reduction
Patent
1997-03-17
1999-12-28
Britton, Howard
Television
Bandwidth reduction system
Data rate reduction
348699, H04N 732, G06T 720
Patent
active
060088524
ABSTRACT:
A method of simplifying the arithmetic operation in a global motion compensation process approximates the motion vector field of the whole image without using many parameters. Motion vectors in the global motion compensation are found by the interpolation and/or extrapolation of the motion vectors of a plurality of representative points 602, 603 and 604 having particular features in the spatial distance thereof. Since the shift operation can be substituted for the division for synthesizing a predicted image of global motion compensation, the processing using a computer or a dedicated hardware is simplified.
REFERENCES:
patent: 4924310 (1990-05-01), Von Brandt
patent: 5408269 (1995-04-01), Tsukagoshi
patent: 5461423 (1995-10-01), Tsukagoshi
patent: 5617482 (1997-04-01), Brusewitz
patent: 5646691 (1997-07-01), Yokoyama
patent: 5647049 (1997-07-01), Odaka
patent: 5757670 (1998-05-01), Ti
patent: 5822007 (1998-10-01), Knee
International Telecommunication Union Standardization Document H.261, Line Transmission of Non-Telephone Signals, Video Codec for Audio Visual Services at px64 kbits, Mar., 1993.
M. Hotter, "Differential Estimation of the Global Motion Parameters Zoom and Pan," Signal Processing, vol. 16, No. 3, pp. 249-265, Mar., 1989.
Britton Howard
Hitachi , Ltd.
LandOfFree
Video coder with global motion compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video coder with global motion compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video coder with global motion compensation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2385953