Automatic, Anatomically Selective, Artifact-Free Enhancement Of Digital Chest Radiographs

M. Ibrahim Sezan; A. Murat Tekalp; Ralph Schaetzing

doi:10.1117/12.968653

27 June 1988 Automatic, Anatomically Selective, Artifact-Free Enhancement Of Digital Chest Radiographs

M. Ibrahim Sezan, A. Murat Tekalp, Ralph Schaetzing

Proceedings Volume 0914, Medical Imaging II; (1988) https://doi.org/10.1117/12.968653
Event: Medical Imaging II, 1988, Newport Beach, CA, United States

Abstract

We propose a technique for automatic, anatomically selective, artifact-free enhancement of digital chest radiographs. Anatomically selective enhancement is motivated by the different enhancement requirements of the lung field and the mediastinum. A recent peak detection algorithm is applied to the image histogram to automatically determine a gray-level threshold between the lung and mediastinum fields. The gray-level threshold facilitates anatomically selective gray-scale modification and unsharp masking. Further, in an attempt to suppress possible white-band artifacts due to unsharp mask-ing at sharp edges, local-contrast adaptivity is incorporated into anatomically selective unsharp masking by designing an anatomy-sensitive emphasis parameter that varied asymmetrically with positive and negative values of the local image contrast.

Citation Download Citation

M. Ibrahim Sezan, A. Murat Tekalp, and Ralph Schaetzing "Automatic, Anatomically Selective, Artifact-Free Enhancement Of Digital Chest Radiographs", Proc. SPIE 0914, Medical Imaging II, (27 June 1988); https://doi.org/10.1117/12.968653

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