Abstract
A low-power contrast enhancement algorithm is proposed for active-matrix
organic light-emitting diode (AMOLED) applications in this paper. Compared
with the conventional contrast enhancement on global images, the proposed
contrast enhancement has been implemented for each histogram segment, respectively,
which is better for local contrast. An effective power reduction method to
conserve local details is also presented based on the histogram segmentation.
Moreover, a self-adaptation power reduction mechanism is further employed
to achieve the tradeoff between the image quality and the power consumption
for videos. Finally, the algorithm has been implemented on a FPGA with a 2.8-in
AMOLED panel. The simulation and experimental results demonstrate that power
consumption is reduced by 30%–40% using the algorithm, while keeping
a good image quality.
© 2014 IEEE
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