Efficient display of high-dynamic-range imagery

Chris J. Woodruff

doi:10.1117/12.218258

8 September 1995 Efficient display of high-dynamic-range imagery

Chris J. Woodruff

Proceedings Volume 2552, Infrared Technology XXI; (1995) https://doi.org/10.1117/12.218258
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Modern imaging systems -- including CCD cameras, and various types of thermal imagers -- are capable of producing images in which useful information covers a signal range which is too great for current display technology to present to the human observer. Additionally, conventional display of electro-optical imagery severely biases the range of small signal differences that are observable by a viewer, despite the partial compensation provided by the approximately quadratic response of cathode ray tube monitors. This paper proposes the use of dynamic range zooming -- analogous to spatial resolution zooming -- as an efficient technique to support visual search of high dynamic range imagery, with the zooming being perceptually unbiased. The technique can be implemented as a lookup table in the signal processing chain of an imaging system. The effect of quantization in the output of the look up table is considered, as such quantization may be a problem for implementation.

Citation Download Citation

Chris J. Woodruff "Efficient display of high-dynamic-range imagery", Proc. SPIE 2552, Infrared Technology XXI, (8 September 1995); https://doi.org/10.1117/12.218258

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