Abstract
This paper presents a new image-quality-based power control
algorithm for an organic light-emitting diode display. The proposed
algorithm calculates the optimal tradeoff between image quality and
power consumption by employing an objective function that integrates
a roll-off curve to eliminate the clipping error, which severely degrades
the perceptual image quality. In addition, a sampling technique is
adopted to reduce the computational complexity. The simulation results
show that the proposed algorithm reduces the average power consumption
by up to 0.310
$\,
\times 10 ^{9}$
(11.75% decrease) while preserving
the image quality above the target level. When applying the sampling
technique to the proposed method, the average computation time per
pixel is reduced by up to 1.025
$\mu {s}$
(37.63% decrease) whereas
the image quality and power consumption remain virtually unchanged.
© 2014 IEEE
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