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http://dx.doi.org/10.5573/ieie.2015.52.7.100

Low-Power Backlight Control and Its Acceleration Based on Image Resizing for Mobile LCD Displays  

Lee, Kyu-Ho (School of Electrical Engineering, Korea University)
Bae, Jin-Gon (School of Electrical Engineering, Korea University)
Kim, Jae-Woo (School of Electrical Engineering, Korea University)
Kim, Jong-Ok (School of Electrical Engineering, Korea University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.7, 2015 , pp. 100-106 More about this Journal
Abstract
In this paper, we propose a fast algorithm for low-power image enhancement method for mobile LCD. In the proposed fast algorithm, the spatial resolution of the input image is significantly reduced, and the image characteristics are analyzed on the reduced resolution image to find a dimming rate adaptive to the image content, thereby saving power. The proposed fast adaptive dimming and image enhancement algorithm is implemented as an application that runs on an Android device. Image quality evaluation and running time analysis experiments on the device indicate that the proposed fast algorithm jointly minimizes the quality degradation and power consumption, reducing the required computation load by over 95%.
Keywords
LCD backlight; power reduction; adaptive dimming; fast algorithm; image resizing;
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