Image analysis – Image transformation or preprocessing
Patent
1992-03-20
1997-11-18
Chin, Wellington
Image analysis
Image transformation or preprocessing
382260, 382265, 358432, 358433, H04N 100
Patent
active
056895917
ABSTRACT:
The present invention is directed to an apparatus and method for converting a noncausal, two dimensional signal representative of a digitized image into an equivalent data format that can be filtered by recursive filters. The first step is to estimate an optimal set of parameters by: generating data representative of a potential matrix which represents the signal for a given set of parameters; filtering the potential matrix to arrive at a statistically equivalent recursive data format; inputting white noise to the recursive data format to generate k samples of the signal; obtaining an average value for the correlation {.chi..sub..tau. }; generating data representative of a gradient of a likelihood function; using that data to minimize the likelihood function; comparing the arrived at set of parameters to a previously arrived at set of parameters to determine whether the difference therebetween is within a desired tolerance; and repeating the previous steps until an optimal set of parameters is estimated. The next step is to generate data representative of a potential matrix using the optimal set of parameters. That potential matrix is filtered to arrive at a statistically equivalent recursive representation. The equivalent, recursive representation may be used, for example, for image compression or image smoothing.
REFERENCES:
patent: 5001560 (1991-03-01), Ericsson
Balram, Moura, "Recursive Enhancement of Noncausal Images", 1991, pp. 2997-3000.
A. Habibi. Two-dimensional BAyesian Estimate of Images. In Proc. of IEEE, vol. 60, pp. 878-833, 1972.
J W. Woods, Two-dimensional Discrete Markovian Fields, IEEE TRans. Inform. Theory, IT-18:232-240, 1972.
JoseM. F. Moura and Nikhil Balram. A Recuisive Framework for Noncausal Gauss Markov Random Fileds. In 24th Annual Conf. Inform. Sci. Syst. pp.608-613, Priceton, NY Mar. 1990.
K. Abend, T. J. Harley and L. N. Kanal, Classification of Binary Random Patterns, IEEE Trans. Inform. Theory. IT-11:583-544, 1965.
D. K. Pickard A Curious Binary Lattice J. Appl. Prob, 14:717-731 1977.
J. K. Goutsias, Mutually Compatible Gibbs Random Fields IEEE Trans. Inform. Theory. IT--35 (6):538-544, Nov. 1989.
Balram Nikhil
Moura José M. F.
Carnegie Mellon University
Chin Wellington
Corrielus Jean B.
LandOfFree
Apparatus and method for noncausal, predictive, digital image co does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for noncausal, predictive, digital image co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for noncausal, predictive, digital image co will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1572042