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Proceedings Paper

Dynamic range compression and contrast enhancement in IR imaging systems
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Paper Abstract

The visualization of IR images on traditional display devices is often complicated by their high dynamic range. Classical dynamic range compression techniques based on simple linear mapping, reduce the perceptibility of small objects and often prevent the human observer from understanding some of the important details. Thus, more sophisticated techniques are required to adapt the recorded signal to the monitor maintaining, and possibly improving, object visibility and image contrast. The problem has already been studied with regard to images acquired in the visible spectral domain, but it has been scarcely investigated in the IR domain. In this work, we address this latter subject and propose a new method for IR dynamic range compression which stems from the lesson learnt from existing techniques. First, we review the techniques proposed in the literature for contrast enhancement and dynamic range compression of images acquired in the visible domain. Then, we present the new algorithm which accounts for the specific characteristics of IR images. The performance of the proposed method are studied on experimental IR data and compared with those yielded by two well established algorithms.

Paper Details

Date Published: 8 October 2007
PDF: 11 pages
Proc. SPIE 6737, Electro-Optical and Infrared Systems: Technology and Applications IV, 67370P (8 October 2007); doi: 10.1117/12.738037
Show Author Affiliations
Francesco Branchitta, Univ. di Pisa (Italy)
Marco Diani, Univ. di Pisa (Italy)
Giovanni Corsini, Univ. di Pisa (Italy)
Antonio Porta, Galileo Avionica S.p.A. (Italy)
Marco Romagnoli, Galileo Avionica S.p.A. (Italy)

Published in SPIE Proceedings Vol. 6737:
Electro-Optical and Infrared Systems: Technology and Applications IV
David A. Huckridge; Reinhard R. Ebert, Editor(s)

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