Fast algorithm of low power image reformation for OLED display

Myungwoo Lee; Taewhan Kim

doi:10.1117/12.2064407

16 April 2014 Fast algorithm of low power image reformation for OLED display

Myungwoo Lee, Taewhan Kim

Proceedings Volume 9159, Sixth International Conference on Digital Image Processing (ICDIP 2014); 91591H (2014) https://doi.org/10.1117/12.2064407
Event: Sixth International Conference on Digital Image Processing, 2014, Athens, Greece

Abstract

We propose a fast algorithm of low-power image reformation for organic light-emitting diode (OLED) display. The proposed algorithm scales the image histogram in a way to reduce power consumption in OLED display by remapping the gray levels of the pixels in the image based on the fast analysis of the histogram of the input image while maintaining contrast of the image. The key idea is that a large number of gray levels are never used in the images and these gray levels can be effectively exploited to reduce power consumption. On the other hand, to maintain the image contrast the gray level remapping is performed by taking into account the object size in the image to which each gray level is applied, that is, reforming little for the gray levels in the objects of large size. Through experiments with 24 Kodak images, it is shown that our proposed algorithm is able to reduce the power consumption by 10% even with 9% contrast enhancement. Our algorithm runs in a linear time so that it can be applied to moving pictures with high resolution.

Citation Download Citation

Myungwoo Lee and Taewhan Kim "Fast algorithm of low power image reformation for OLED display", Proc. SPIE 9159, Sixth International Conference on Digital Image Processing (ICDIP 2014), 91591H (16 April 2014); https://doi.org/10.1117/12.2064407

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