Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1994-04-29
1996-07-16
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Motion vector generation
348416, H04N 732
Patent
active
055371558
ABSTRACT:
Efficient and adaptable motion estimation between flames in a video sequence is achieved in a video compression system 100 by first performing a series of comparisons in a first region between a present video block of a present video frame and a comparison video block of a previously stored video frame based on a first search point displacement pattern 500. Then, similar comparisons are performed in a second and third region based on a second and third search point displacement pattern respectively 501, 502. A best match video block is determined as a result of the series of comparisons 503. The series of comparisons may be made for a predetermined number of video blocks 600 and video statistics may be collected for the comparisons 601. If the video statistics are unfavorable 602 or if a predetermined time has expired 603, then the region used for searching for a best match block may be changed.
REFERENCES:
patent: 4901145 (1990-02-01), Harradine et al.
patent: 4924310 (1990-05-01), von Brandt
patent: 4965666 (1990-10-01), Haghiri
patent: 4989087 (1991-01-01), Pele et al.
patent: 4992869 (1991-02-01), Samad et al.
patent: 5068722 (1991-11-01), Sugiyama
patent: 5068724 (1991-11-01), Krause et al.
patent: 5072293 (1991-12-01), De Haan et al.
patent: 5083202 (1992-01-01), Parke
patent: 5089887 (1992-02-01), Robert et al.
patent: 5105271 (1992-04-01), Niihara
patent: 5111511 (1992-05-01), Ishii et al.
patent: 5142360 (1992-08-01), Niihara
patent: 5151784 (1992-09-01), Lavagetto et al.
patent: 5173772 (1992-12-01), Choi
patent: 5200820 (1993-04-01), Gharavi
patent: 5210605 (1993-05-01), Zaccarin et al.
patent: 5237405 (1993-08-01), Egusa et al.
patent: 5278915 (1994-01-01), Chupeau et al.
ISO, "CD 11172-2: Coding of Moving Pictures and Associated Audio for Digital Storage Media at up to about 1.5 Mbits/s-Part 2 Video", Annex D (informative), pp. D-29-D-34, Apr. 3, 1992.
K. Rao and P. Yip, Discrete Cosine Transform: Algorithms, Advantages, Applications, Academic Press, 1990 pp. 247, 253.
Michael Gilge, "A High Quality Videophone Coder Using Hierarchical Motion Estimation and Structured Coding of the Prediction Error", SPIE Visual Communications and Image Processing 1988, pp. 864-874.
Auyeung Cheung
Levine Stephen N.
O'Connell Kevin J.
Au A.
Chin Tommy P.
Motorola Inc.
Stockley Darleen J.
LandOfFree
Method for estimating motion in a video sequence 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 for estimating motion in a video sequence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for estimating motion in a video sequence will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1788022