Abstract
A Dual Layer high dynamic range liquid
crystal display (LCD) can be built by stacking two panels one on top of the
other. In this way, the dynamic range is theoretically squared and the bit
depth is also increased. However, in order to minimize the parallax and
reconstruction errors, dedicated splitting algorithms are needed to
generate the two images which drive the panels. In this paper, we present an
algorithm, based on variational techniques, which seeks the joint
minimization of both errors. We propose a simplified visible difference
metric that exploits some limitations of the human visual system and can be
easily incorporated into an optimization algorithm. The image splitting task
is formulated as a quadratic programming problem, which can be efficiently
solved by means of appropriate numerical methods. Preliminary tests on
medical images showed that the algorithm has good performances and appears
robust with respect to the parameter adjustment.
© 2008 IEEE
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