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Proceedings Paper

Astronomical point-source detection based on nonlinear image filtering with partial differential equations
Author(s): M. Pesenson; D. Makovoz; W. Reach; J. Rho; R. Laher
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Paper Abstract

A new nonlinear diffusion filtering scheme based on a nonlinear diffusion equation with a variable scale parameter is developed to preserve faint point sources while smoothing images for segmentation purposes. Application of the proposed approach to simulated, as well as to real images obtained by the Spitzer Space Telescope and by the Chandra X-ray Observatory reduced the Gaussian and Poisson noise successfully, while preserving both point sources and diffuse structures.

Paper Details

Date Published: 15 September 2005
PDF: 9 pages
Proc. SPIE 5913, Signal and Data Processing of Small Targets 2005, 591323 (15 September 2005); doi: 10.1117/12.615507
Show Author Affiliations
M. Pesenson, California Institute of Technology (United States)
D. Makovoz, California Institute of Technology (United States)
W. Reach, California Institute of Technology (United States)
J. Rho, California Institute of Technology (United States)
R. Laher, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 5913:
Signal and Data Processing of Small Targets 2005
Oliver E. Drummond, Editor(s)

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