Image Reconstruction in the Gigavision Camera
Venue
ICCV workshop OMNIVIS 2009
Publication Year
2009
Authors
Feng Yang, Luciano Sbaiz, Edoardo Charbon, Sabine Susstrunk, Martin Vetterli
BibTeX
Abstract
the gigavision camera. The main feature of this camera is that the pixels have a
binary response. The response function of a gigavision sensor is non-linear and
similar to a logarithmic function, which makes the camera suitable for high dynamic
range imaging. Since the sensor can detect a single photon, the camera is very
sensitive and can be used for night vision and astronomical imaging. One important
aspect of the gigavision camera is how to estimate the light intensity through
binary observations. We model the light intensity field as 2D piecewise constant
and use Maximum Penalized Likelihood Estimation (MPLE) to recover it. Dynamic
programming is used to solve the optimization problem. Due to the complex
computation of dynamic programming, greedy algorithm and pruning quadtrees are
proposed. They show acceptable reconstruction performance with low computational
complexity. Experimental results with synthesized images and real images taken by a
single-photon avalanche diode (SPAD) camera are given.
