A level crossing enhancement scheme for chest radiograph images

Nagesha and Hemantha Kumar, G. (2007) A level crossing enhancement scheme for chest radiograph images. Computers in Biology and Medicine, 37 (10). 1455 - 1460. ISSN 1879-0534

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Official URL: https://doi.org/10.1016/j.compbiomed.2007.01.002


A new approach for contrast enhancement of chest radiograph image data is presented. Existing methods for image enhancement focus mainly on the properties of the image to be processed while excluding any consideration of the observer characteristics. In several applications, particularly in the medical imaging area, effective contrast enhancement for diagnostic purposes can be achieved by including certain basic human visual properties. In this paper we shall present a novel (recursive) algorithm that tailors the required amount of contrast enhancement based on a combination of the optimal phase representation and the theory of projection onto a convex set. Constraints of maximum bandwidth of the image data, appropriate knowledge of the amplitude value of the image data, heuristic limitations and level crossing measurements serve to impose additional information. So that, the enhanced image data may better converge to the good quality image.

Item Type: Article
Additional Information: QT Variability & Heart Rate Variability
Uncontrolled Keywords: Level crossing, Image enhancement, Chest radiographs, Fourier transform, Histogram equalization
Subjects: D Physical Science > Computer Science
Divisions: Department of > Computer Science
Depositing User: MUL SWAPNA user
Date Deposited: 07 Sep 2019 06:28
Last Modified: 07 Sep 2019 06:28
URI: http://eprints.uni-mysore.ac.in/id/eprint/7740

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