Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2011-02-01
2011-02-01
Banks Harold, Marsha D (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240010, C375S240180, C375S240190, C375S240200
Reexamination Certificate
active
07881370
ABSTRACT:
The invention relates to a method of selecting among N “Spatial Video CODECs” where N is an integer number greater than 1, the optimum “Spatial Video CODEC” for a same input signal I. “Spatial Video CODEC” is understood as the combination of any transform of the input signal, followed by a quantization of the transform coefficients and a corresponding entropic coder. Firstly from all the N “Spatial Video CODECs” for the same input signal I and a same quality parameter Q, the rate R and the distortion measures D are obtained. Q is an integer value between 0 and 100, defined by any rate-distortion algorithm to provide a compression of the input sequence with constant rate or with constant distortion. Further an optimality criterion is calculated. The optimality criterion is defined as the minimization of the value Ln=f(Rn,Dn) calculated for all the n from 1 to N. n is the index of the “Spatial Video CODEC”, where f(Rn,Dn) is a function of Rn and Dn. The function f may be defined as as f(Rn,Dn)=Rn+1Dn, , 1 being the Lagrange multiplier that weights the relative influence of the rate R and of the distortion D.
REFERENCES:
patent: 5047852 (1991-09-01), Hanyu et al.
patent: 5394473 (1995-02-01), Davidson
patent: 5778192 (1998-07-01), Schuster et al.
patent: 5959560 (1999-09-01), Said et al.
patent: 0 866 426 (1998-09-01), None
patent: 97/15146 (1997-04-01), None
patent: 98 38800 (1998-09-01), None
Chandra S. et al., JPEG compession metric as a quality aware image transcoding 2ndUSENIX Symposium on Internet Technologies And Systems, Proceeding of USENIX′ 99: 2ndSymposium on Internet Technologies and Systems, Boulder, CO, USA, Oct. 11-14, 1999, pp. 81-92.
Mallat S. et al., “Analysis of Low Bit Rate Image Transform Coding”, IEEE Transactions on Signal Processing, IEEE, Inc., New York, US, vol. 46, No. 4, Apr. 1, 1998, pp. 1027-1042.
Reichel Julien
Ziliani Francesco
Anyikire Chikaodili E
Armstrong Teasdale LLP
Banks Harold Marsha D
Visiowave S.A.
LandOfFree
Method of selecting among n spatial video CODECs the optimum... 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 of selecting among n spatial video CODECs the optimum..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of selecting among n spatial video CODECs the optimum... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2649386