High dynamic range compressive imaging: a programmable imaging system

Mehrdad Abolbashari; Faramarz Farahi; Filipe Magalhaes; Francisco M. Araújo; Miguel V. Correia

doi:10.1117/1.OE.51.7.071407

11 June 2012 High dynamic range compressive imaging: a programmable imaging system

Mehrdad Abolbashari, Faramarz Farahi, Filipe Magalhaes, Francisco M. Araújo, Miguel V. Correia

Author Affiliations +

Optical Engineering, Vol. 51, Issue 7, 071407 (June 2012). https://doi.org/10.1117/1.OE.51.7.071407

Abstract

Some scenes and objects have a wide range of brightness that cannot be captured with a conventional camera. This limitation, which degrades the dynamic range of an imaged scene or object, is addressed by use of high dynamic range (HDR) imaging techniques. With HDR imaging techniques, images of a very broad range of intensity can be obtained with conventional cameras. Another limitation of conventional cameras is the range of wavelength that they can capture. Outside the visible wavelengths, the responsivity of conventional cameras drops; therefore, a conventional camera cannot capture images in nonvisible wavelengths. Compressive imaging is a solution for this problem. Compressive imaging reduces the number of pixels of a camera to one, so a camera can be replaced by a detector with one pixel. The range of wavelengths to which such detectors are responsive is much wider than that of a conventional camera. A combination of HDR imaging and compressive imaging is introduced and is benefitted from the advantages of both techniques. An algorithm that combines these two techniques is proposed, and results are presented.

Citation Download Citation

Mehrdad Abolbashari, Faramarz Farahi, Filipe Magalhaes, Francisco M. Araújo, and Miguel V. Correia "High dynamic range compressive imaging: a programmable imaging system," Optical Engineering 51(7), 071407 (11 June 2012). https://doi.org/10.1117/1.OE.51.7.071407

Published: 11 June 2012

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