Power saving on mobile devices through contrast-aware backlight control

Vivian Yang, Jia Ying Lin, Kyle Shih Huang Lo, Chia Hung Yeh, Chia Chen Kuo, Li Wei Kang

研究成果: 書貢獻/報告類型會議論文篇章

2 引文 斯高帕斯(Scopus)

摘要

Based on the high penetration rate of mobile devices, reducing power consumption for mobile devices have become increasingly important. In current technology, statistics show that the display of the mobile device dominates the major power consumption of the device (e.g., up to 40% of the total power). Therefore, to efficiently reduce the display power consumption while maintaining the image quality, this paper proposes a novel contrast-aware backlight control algorithm for mobile devices. By transforming the color space for a displayed image from RGB (red, green, blue) to HSI (hue, saturation, intensity), we first calculate the RMS (root mean square) contrast for the image. Then we estimate the "brightness factor" for adjusting the image based on the RMS contrast and the employed HVS (human vision system)-based visual quality assessment technique. At the same time, the estimated brightness factor is used to determine the screen backlight brightness value of the device. As a result, the best tradeoff between the image display quality and the power consumption can be achieved. Our experimental results have demonstrated that 10∼40% reduction of backlight brightness can be achieved, resulting in power consumption of 8∼25%, while good image display quality can be maintained.

原文英語
主出版物標題2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2015
發行者Institute of Electrical and Electronics Engineers Inc.
頁面946-951
頁數6
ISBN(電子)9789881476807
DOIs
出版狀態已發佈 - 2016 2月 19
對外發佈
事件2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2015 - Hong Kong, 香港
持續時間: 2015 12月 162015 12月 19

出版系列

名字2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2015

其他

其他2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2015
國家/地區香港
城市Hong Kong
期間2015/12/162015/12/19

ASJC Scopus subject areas

  • 人工智慧
  • 建模與模擬
  • 訊號處理

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