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

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