Fundamentals of digital image processing
Fundamentals of digital image processing
Introduction to statistical pattern recognition (2nd ed.)
Introduction to statistical pattern recognition (2nd ed.)
Optimal Control of Stochastic Systems
Optimal Control of Stochastic Systems
Transform Coding of Images
The Distributed, Partial, And Conditional Karhunen-Loève Transforms
DCC '03 Proceedings of the Conference on Data Compression
The Distributed Karhunen–Loève Transform
IEEE Transactions on Information Theory
Recursive implementation of the distributed Karhunen-Loève transform
IEEE Transactions on Signal Processing
Practical data compression in wireless sensor networks: A survey
Journal of Network and Computer Applications
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We study the problem of optimal reduced-dimension linear transform coding and reconstruction of a signal based on distributed correlated observations of the signal. In the mean square estimation context this involves finding the optimal signal representation based on multiple incomplete or only partial observations that are correlated. In particular, this leads to the study of finding the optimal Karhunen-Loève basis based on the censored observations. The problem has been considered previously by Gastpar, Dragotti, and Vetterli in the context of jointly Gaussian random variables based on using conditional covariances. In this paper, we derive the estimation results in the more general setting of second-order random variables with arbitrary distributions, using entirely different techniques based on the idea of innovations. We explicitly solve the single transform coder case, give a characterization of optimality in the multiple distributed transform coders scenario and provide additional insights into the structure of the problem.