Temporal filtering using object motion estimation

Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S240160, C375S240270

Reexamination Certificate

active

07639741

ABSTRACT:
A method and apparatus for temporally filtering a video sequence using motion compensation in which motion information captures the motion of objects is disclosed. Pixels from a current frame are aligned with matching pixels from previous and/or future frames according to the motion of the surrounding object of arbitrary shape. A weighted average of the corresponding pixels is taken for each pixel in the current frame to produce a filtered version of the current frame. The weights may be adjusted to compensate for similarities between the frames and for blur transitions near object boundaries. A lighting offset may also be used to prevent erroneous lighting shifts during filtering.

REFERENCES:
patent: 4298888 (1981-11-01), Colles et al.
patent: 5070413 (1991-12-01), Sullivan et al.
patent: 5351095 (1994-09-01), Kerdranvat
patent: 5473384 (1995-12-01), Jayant et al.
patent: 5544239 (1996-08-01), Golin et al.
patent: 5568196 (1996-10-01), Hamada et al.
patent: 5585862 (1996-12-01), Wuertele et al.
patent: 5619268 (1997-04-01), Kobayashi et al.
patent: 5646691 (1997-07-01), Yokoyama
patent: 5650823 (1997-07-01), Ngai et al.
patent: 5912991 (1999-06-01), Jeon et al.
patent: 5982909 (1999-11-01), Erdem et al.
patent: 6064776 (2000-05-01), Kikuchi et al.
patent: 6178205 (2001-01-01), Cheung et al.
patent: 6281942 (2001-08-01), Wang
patent: 6343097 (2002-01-01), Kobayashi et al.
patent: 6421384 (2002-07-01), Chung et al.
patent: 6483874 (2002-11-01), Panusopone et al.
patent: 6584213 (2003-06-01), Prakash et al.
patent: 6600786 (2003-07-01), Prakash et al.
patent: 2001/0026586 (2001-10-01), Katata et al.
patent: 2002/0106133 (2002-08-01), Edgar et al.
patent: 2002/0114532 (2002-08-01), Ratner et al.
patent: 2002/0131495 (2002-09-01), Prakash et al.
patent: 2002/0141498 (2002-10-01), Martins et al.
patent: 2003/0012277 (2003-01-01), Azuma et al.
patent: 596409 (1994-05-01), None
patent: 1100260 (2001-05-01), None
patent: 62091090 (1987-04-01), None
patent: WO 9957906 (1999-11-01), None
patent: WO 00/64167 (2000-10-01), None
patent: WO 00/77735 (2000-12-01), None
Kalivas, D. S. and Sawchuck, A. A. “Motion Compensated Enhancement of Noisy Image Sequences”, Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing, Apr. 1990, pp. 2121-2124.
Kundu, A. and Wu, W. R. “Double-Window Hodges-Lehman (D) Filter and Hybrid D-Median Filter for Robust Image Smoothing”, IEEE Transactions on Acoustics Speech, and Signal Processing, Aug. 1989, vol. 37, No. 8, pp. 1293-1298.
Ozkan, M. K. et al. “Adaptive Motion-Compensated Filtering of Noisy Image Sequences”, IEEE Transactions on Circuits and Systems for Video Technology, Aug. 1993, vol. 3, No. 4, pp. 277-290.
Waggoner, B.—Compression for Digital Video—. Lawrence, KS: CMP Books, Aug. 2002. 273.
Amazon.com listing for—Compression for Digital Video—. Sep. 2008.
James C. Brailean, et al., “Noise Reduction Filters for Dynamic Image Sequences: A Review”, Sep. 1995, pp. 1272-1292, vol. 83, No. 9, Proceedings of the IEEE.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Temporal filtering using object motion estimation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Temporal filtering using object motion estimation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temporal filtering using object motion estimation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4070602

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.