Abstract
In this letter, a new backlight dimming technique that considers perceptual
image quality based on a structural similarity (SSIM) metric is proposed.
Conventional algorithms cannot accurately control the optimal trade-off between
image quality and power consumption; image quality is therefore degraded in
some images. In contrast, the proposed algorithm calculates the allowable
target error based on the SSIM metric in real time using the relation function
between SSIM and the mean square error (MSE). It can therefore optimally reduce
power consumption while preserving the perceptual image quality over the target
level. Experimental results show that the proposed algorithm successfully
maintains the target SSIM for all test images and sequences. Additionally,
the average SSIM of the proposed algorithm is up to 0.034 higher than those
of the benchmark algorithms.
© 2014 IEEE
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