Journal of the Institute of Electronics Engineers of Korea SP (대한전자공학회논문지SP)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Real-Time Color Gamut Mapping Method Based on the Three-Dimensional Reduced Resolution Look-Up Table

해상도 절감 3차원 룩업 테이블을 이용한 실시간 색역폭 매핑 방법

  • 한동일 (세종대학교 컴퓨터공학과)
  • Published : 2004.09.01
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Abstract

A novel real-time color gamut mapping method is described. The color gamut mapping method that is used for enhancing the color reproduction quality between PC monitor and printer devices is adopted for digital TV display quality enhancement. The high definition digital TV display devices operate at the clock speed of around 70MHz ～ 150MHz and permit several nano seconds for real-time gamut mapping. Thus, the concept of three-dimensional reduced resolution look-up table is introduced for real-time processing. The required hardware can be greatly reduced by look-up table resolution adjustment. The proposed hardware architecture is successfully implemented in FPGA and ASIC and also successfully adopted in digital TV display quality enhancement purposes.

본 논문에서는 기존에 PC 모니터와 프린터 사이의 색 재현성 향상을 위해서 사용되던 색역폭 매핑 방법을 디스플레이 장치에 적용하기 위한 실시간 색역폭 매핑 방법을 제시하였다. 다양한 디스플레이 장치가 개발됨에 따라서 각 디스플레이 별로 색 재현성의 차이가 발생하고 있으며 기존의 색역폭 매핑 방법을 디지털 TV의 디스플레이 장치에 적용하기 위해서는 수 나노초 단위의 처리 속도가 필요하다. 이를 위하여 본 논문에서는 절감 3차원 룩업 테이블(three-dimensional reduced resolution look-up table)의 하드웨어 구조를 제안하고 이를 이용하여 색역폭 매핑을 실시간으로 수행하는 방법을 제공한다. 제안된 하드웨어 구조는 먼저 simulation을 통하여 타당성을 검증하였으며 이후 FPGA와 ASIC으로 구현되어 디지털 TV의 디스플레이 장치의 화질 개선에 성공적으로 적용되었다.

Keywords

References

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