Expectation-maximization algorithms for image processing using multiscale models and mean-field theory, with applications to laser radar range profiling and segmentation

Andy Tsai; Jun Zhang; Alan S. Willsky

doi:10.1117/1.1385168

1 July 2001 Expectation-maximization algorithms for image processing using multiscale models and mean-field theory, with applications to laser radar range profiling and segmentation

Andy Tsai, Jun Zhang, Alan S. Willsky

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Optical Engineering, Vol. 40, Issue 7, (July 2001). https://doi.org/10.1117/1.1385168

We describe a new class of computationally efficient algorithms designed to solve incomplete-data problems frequently encountered in image processing and computer vision. The basis of this framework is the marriage of the expectation-maximization (EM) procedure with two powerful methodologies. In particular, we have incorporated optimal multiscale estimators into the EM procedure to compute estimates and error statistics efficiently. In addition, mean-field theory (MFT) from statistical mechanics is incorporated into the EM procedure to help solve the computational problems that arise from our use of Markov random-field (MRF) modeling of the hidden data in the EM formulation. We have applied this algorithmic framework and shown that it is effective in solving a wide variety of image-processing and computer-vision problems. We demonstrate the application of our algorithmic framework to solve the problem of simultaneous anomaly detection, segmentation, and object profile estimation for noisy and speckled laser radar range images.

©(2001) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Andy Tsai, Jun Zhang, and Alan S. Willsky "Expectation-maximization algorithms for image processing using multiscale models and mean-field theory, with applications to laser radar range profiling and segmentation," Optical Engineering 40(7), (1 July 2001). https://doi.org/10.1117/1.1385168

Published: 1 July 2001

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