Please use this identifier to cite or link to this item: https://doi.org/10.1145/1999995.2000002
Title: Adaptive display power management for mobile games
Authors: Anand, B. 
Thirugnanam, K.
Sebastian, J. 
Kannan, P.G.
Ananda, A.L. 
Chan, M.C. 
Balan, R.K.
Keywords: backlight scaling
mobile games
power management
tone mapping
Issue Date: 2011
Source: Anand, B.,Thirugnanam, K.,Sebastian, J.,Kannan, P.G.,Ananda, A.L.,Chan, M.C.,Balan, R.K. (2011). Adaptive display power management for mobile games. MobiSys'11 - Compilation Proceedings of the 9th International Conference on Mobile Systems, Applications and Services and Co-located Workshops : 57-70. ScholarBank@NUS Repository. https://doi.org/10.1145/1999995.2000002
Abstract: In this paper, we show how tone mapping techniques can be used to dynamically increase the image brightness, thus allowing the LCD backlight levels to be reduced. This saves significant power as the majority of the LCD's display power is consumed by its backlight. The Gamma function (or equivalent) can be efficiently implemented in smartphones with minimal resource cost. We describe how we overcame the Gamma function's non-linear nature by using adaptive thresholds to apply different Gamma values to images with differing brightness levels. These adaptive thresholds allow us to save significant amounts of power while preserving the image quality. We implemented our solution on a laptop and two Android smartphones. Finally, we present measured analytical results for two different games (Quake III and Planeshift), and user study results (using Quake III and 60 participants) that shows that we can save up to 68% of the display power without significantly affecting the perceived gameplay quality. © 2011 ACM.
Source Title: MobiSys'11 - Compilation Proceedings of the 9th International Conference on Mobile Systems, Applications and Services and Co-located Workshops
URI: http://scholarbank.nus.edu.sg/handle/10635/41521
ISBN: 9781450306430
DOI: 10.1145/1999995.2000002
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