Analytic Sensing: Direct Recovery of Point Sources from Planar Cauchy Boundary Measurements
D. Kandaswamy, T. Blu, D. Van De Ville
Proceedings of the SPIE Optics and Photonics 2007 Conference on Mathematical Methods: Wavelet XII, San Diego CA, USA, August 26-29, 2007, vol. 6701, pp. 67011Y-1–67011Y-6.
Inverse problems play an important role in engineering. A problem that often occurs in electromagnetics (e.g. EEG) is the estimation of the locations and strengths of point sources from boundary data.
We propose a new technique, for which we coin the term “analytic sensing”. First, generalized measures are obtained by applying Green's theorem to selected functions that are analytic in a given domain and at the same time localized to “sense” the sources. Second, we use the finite-rate-of-innovation framework to determine the locations of the sources. Hence, we construct a polynomial whose roots are the sources' locations. Finally, the strengths of the sources are found by solving a linear system of equations. Preliminary results, using synthetic data, demonstrate the feasibility of the proposed method.
@INPROCEEDINGS(http://bigwww.epfl.ch/publications/kandaswamy0701.html,
AUTHOR="Kandaswamy, D. and Blu, T. and Van De Ville, D.",
TITLE="Analytic Sensing: {D}irect Recovery of Point Sources from Planar
{C}auchy Boundary Measurements",
BOOKTITLE="Proceedings of the {SPIE} Conference on Mathematical Imaging:
{W}avelet {XII}",
YEAR="2007",
editor="",
volume="6701",
series="",
pages="67011Y-1--67011Y-6",
address="San Diego CA, USA",
month="August 26-29,",
organization="",
publisher="",
note="")