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Proceedings Paper

Noise-resistant weak-structure enhancement for digital radiography
Author(s): Martin Stahl; Til Aach; Thorsten M. Buzug; Sabine Dippel; Ulrich Neitzel
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Paper Abstract

Today's digital radiography systems mostly use unsharp masking-like image enhancement techniques based on splitting input images into two or three frequency channels. This method allows to enhance very small structures (edge enhancement) as well as enhancement of global contrast (harmonization). However, structures of medium size are not accessible by such enhancement. We develop and test a nonlinear enhancement algorithm based on hierarchically repeated unsharp masking, resulting in a multiscale architecture allowing consistent access to structures of all sizes. The algorithm is noise- resistant in the sense that it prevents unacceptable noise amplification. Clinical tests performed in the radiology departments of two major German hospitals so far strongly indicate the superior performance and high acceptance of the new processing.

Paper Details

Date Published: 21 May 1999
PDF: 12 pages
Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999); doi: 10.1117/12.348539
Show Author Affiliations
Martin Stahl, Philips Research Hamburg (Germany)
Til Aach, Medical Univ. of Luebeck (Germany)
Thorsten M. Buzug, Philips Research Hamburg (Germany)
Sabine Dippel, Philips Research Hamburg (Germany)
Ulrich Neitzel, Philips Medical Systems (Germany)


Published in SPIE Proceedings Vol. 3661:
Medical Imaging 1999: Image Processing
Kenneth M. Hanson, Editor(s)

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