Mr. Seth Weith-Glushko Profile

Seth Weith-Glushko

Image Scientist

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Proceedings Article | 30 April 2007 Paper

Quantitative analysis of infrared contrast enhancement algorithms

Seth Weith-Glushko, Carl Salvaggio

Proceedings Volume 6543, 65430S (2007) https://doi.org/10.1117/12.720092

KEYWORDS: Infrared imaging, Infrared radiation, Algorithm development, Imaging systems, Video, Image processing, Image compression, Thermography, Cameras, Quantitative analysis

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Dynamic range reduction and contrast enhancement are two image-processing methods that are required when developing thermal camera systems. The two methods must be performed in such a way that the high dynamic range imagery output from current sensors are compressed in a pleasing way for display on lower dynamic range monitors. This research examines a quantitative analysis of infrared contrast enhancement algorithms found in literature and developed by the author. Four algorithms were studied, three of which were found in literature and one developed by the author: tail-less plateau equalization (TPE), adaptive plateau equalization (APE), the method according to Aare Mällo (MEAM), and infrared multi-scale retinex (IMSR). TPE and APE are histogram-based methods, requiring the calculation of the probability density of digital counts within an image. MEAM and IMSR are frequency-domain methods, methods that operate on input imagery that has been split into components containing differing spatial frequency content. After a rate of growth analysis and psychophysical trial were performed, MEAM was found to be the best algorithm.

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