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Proceedings Paper

Deblurring Gaussian blur
Author(s): Bart M. ter Haar Romeny; Luc M. J. Florack; Mark de Swart; Janita Wilting; Max A. Viergever
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Paper Abstract

To enhance Gaussian blurred images the structure of Gaussian scale-space is studied in a small environment along the scale axis. A local Taylor-expansion in the negative scale-direction requires the calculation of high order derivatives with respect to scale. The generating differential equation for linear scale- space, the isotropic diffusion equation, relates these derivatives to spatial Laplaceans. The high order spatial derivatives are calculated by means of convolution with Gaussian derivative kernels, enabling well-posed differentiation. Deblurring incorporating even 32th order spatial derivatives is accomplished successfully. A physical limit is experimentally shown for the Gaussian derivatives due to discrete raster representation and coarseness of the intensity discretization.

Paper Details

Date Published: 8 July 1994
PDF: 10 pages
Proc. SPIE 2299, Mathematical Methods in Medical Imaging III, (8 July 1994); doi: 10.1117/12.179245
Show Author Affiliations
Bart M. ter Haar Romeny, Utrecht Univ. Hospital (Netherlands)
Luc M. J. Florack, Utrecht Univ. Hospital (Netherlands)
Mark de Swart, Utrecht Univ. Hospital (Netherlands)
Janita Wilting, Utrecht Univ. Hospital (Netherlands)
Max A. Viergever, Utrecht Univ. Hospital (Netherlands)


Published in SPIE Proceedings Vol. 2299:
Mathematical Methods in Medical Imaging III
Fred L. Bookstein; James S. Duncan; Nicholas Lange; David C. Wilson, Editor(s)

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