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A wavelet based multiresolution extended Kalman filter approach to the reconstruction problem of curved-ray optical tomography

Naik, Naren and Vasu, Ram M (1999) A wavelet based multiresolution extended Kalman filter approach to the reconstruction problem of curved-ray optical tomography. In: SPIE:High-Speed Imaging and Sequence Analysis, 28-29 January, San Jose, CA, USA, Vol.3642, 156-165.

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Abstract

We present a wavelet based multiresolution extended Kalman filter (EKF) reconstruction approach to curved ray optical tomography. A state variable model describing the tomographic process is set up, and an EKF is applied to the wavelet transformed model to estimate the refractive index distribution of an optically transparent refracting object from noisy optical path-length difference (OPD) data. Preliminary results of reconstructions of a synthetic time invariant refractive index distribution from OPD data sets of various noise levels are comparable with those obtained from a typically used deterministic approach, the average correction per projection method.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to SPIE:International Society for Optical Engineering.
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation and Applied Physics (Formally ISU)
Date Deposited: 28 May 2007
Last Modified: 27 Aug 2008 12:42
URI: http://eprints.iisc.ernet.in/id/eprint/10276

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