High dynamic range compressive imaging: a programmable imaging system
High dynamic range compressive imaging: a programmable imaging system
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Date
2012
Authors
Filipe Tiago Magalhães
Mehrdad Abolbashari
Miguel Velhote Correia
Francisco Araújo
Faramarz Farahi
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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 benefit