Journal of Broadcast Engineering (방송공학회논문지)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
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Low Power Contrast Enhancement for OLED Displays

OLED 디스플레이를 위한 저전력 대조비 향상 기법

  • Kim, Jin-Hwan (School of Electrical Engineering, Korea University) ;
  • Lee, Chul (School of Electrical Engineering, Korea University) ;
  • Lee, Chul-Woo (School of Electrical Engineering, Korea University) ;
  • Kim, Chang-Su (School of Electrical Engineering, Korea University)
  • 김진환 (고려대학교 전기전자전파공학과) ;
  • 이철 (고려대학교 전기전자전파공학과) ;
  • 이철우 (고려대학교 전기전자전파공학과) ;
  • 김창수 (고려대학교 전기전자전파공학과)
  • Received : 2012.01.17
  • Accepted : 2012.03.28
  • Published : 2012.03.30
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Abstract

A low power contrast enhancement algorithm for OLED displays is proposed in this work. The proposed algorithm increases the contrast of the image based on a linear transformation function, while reducing the power consumption of OLED displays. Furthermore, the proposed algorithm extends the global contrast enhancement to local contrast enhancement using the block-based transformation function. Simulation results demonstrate that the proposed algorithm reduces the power consumption, while enhancing the contrast of an input image.

본 논문은 OLED 디스플레이를 위한 저전력 화질 개선 기법을 제안한다. 제안하는 알고리즘은 영상의 대조비를 향상하면서 동시에 OLED 디스플레이의 소비 전력을 감소하는 변환을 선형 변환 함수에 기반하여 유도한다. 또한 영상의 지역적 특성을 고려하여 블록 단위로 변환 함수를 적용하여 영상의 지역적 특성에 적응적인 대조비 개선 알고리즘을 개발한다. 컴퓨터 모의실험을 통해 제안하는 알고리즘이 전력 소비를 줄이고 동시에 영상의 대조비를 향상시키는 것을 확인한다.

Keywords

References

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