Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Patent
1996-12-10
2000-11-07
Britton, Howard
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
348413, 348699, H04N 736
Patent
active
061446998
ABSTRACT:
A device for estimating motion between a current image and a previous image by block matching, the images being split into blocks. The device includes a processing circuit for each candidate motion vector and at least one memory. Each processing circuit calculates errors between a block of the current image and the block designated by a respective candidate motion vector in the previous image. The processing circuit successively receives pixels of the current image according to a line scan at a first input and corresponding pixels of the previous image identified by the associated candidate motion vector at a second input. The processing circuit calculates partial sums at the end of line of each block of the current image corresponding to accumulated errors for this block. The processing circuits further include an output for delivering the partial sums and a third input for receiving the partial sums. The output and third input of the processing circuit is coupled to the memory such that, when processing a block and line scanning, partial sums of the block preceding the processed block are transmitted from the output to the memory and partial sums of the block following the processed block are received from the memory at the third input.
REFERENCES:
patent: 4897720 (1990-01-01), Wu et al.
patent: 5212548 (1993-05-01), Haan et al.
patent: 5621481 (1997-04-01), Yasuda et al.
patent: 5731840 (1998-03-01), Kikuchi et al.
patent: 5825423 (1998-10-01), Jung
patent: 5912706 (1999-06-01), Kikuchi et al.
patent: 6025881 (2000-02-01), Kikuchi et al.
"Parallel Architectures for 3-Step Hierarchical Search Block-Matching Algorithm", IEEE Transactions on Circuits and Systems For Video Technology, Her-Ming Jong, et al., Aug. 1994, vol. 4, No. 4, pp. 407-415.
"A VLSI Motion Estimator for Video Image Compression", IEEE Transactions on Consumer Electronics, Chen-Mie Wu, et al., Nov. 1993, vol. 39, No. 4, pp. 837-846.
"A Motion Estimator for Low Bit-Rate Video Codec", IEEE Transactions on Consumer Electronics, Yen-Shen Jehng et al., May 1992, vol. 38, No. 2, pp. 60-69.
Albin Fran.cedilla.ois
Knee Michael
Britton Howard
Burke Alexander J.
Kurdyla Ronald H.
Thomson Multimedia S.A.
Tripoli Joseph S.
LandOfFree
Device for estimating motion by block matching does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for estimating motion by block matching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for estimating motion by block matching will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1648887