High dynamic range compressive imaging: a programmable imaging system

• Type: Article in International Scientific Journal
• Date: 2012

Authors

abolbashari, m (Author) Other; magalhaes, f (Author) Other; araujo, fmm (Author) Other; correia, mv (Author) FEUP; farahi, f (Author) Other

Journal

Title: Optical Engineering

Vol. 51

Final page: 071407

ISSN: 0091-3286

Publisher: SPIE

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 12 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-002-870

DOI: 10.1117/1.oe.51.7.071407

Abstract (EN): 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. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.7.071407]

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8