Tone Mapping Method using Non-linear Dynamic Range Normalization for High Dynamic Range Images

HDR 영상을 위한 비선형 동적영역 정규화를 이용한 톤 매핑 기법

  • 김범용 (한양대학교 전자전기제어계측공학과) ;
  • 황보현 (한양대학교 전자전기제어계측공학과) ;
  • 윤종호 (한양대학교 전자전기제어계측공학과) ;
  • 최명렬 (한양대학교 전자전기제어계측공학과)
  • Published : 2008.06.18

Abstract

In this paper, we propose a tone mapping method using Non-linear Dynamic Range Normalization (NDRN) for High Dynamic Range (HDR) images. HDR images are not suitable for commercial display devices because dynamic range of HDR images do not match with one of Low Dynamic Range (LDR) display devices. To reproduce a tone of HDR images for LDR displays, tone mapping methods have been proposed such as local and global tone mapping. We introduce NDRN to locate mean of HDR images at the center of LDR. NDRN preserves the details for highlight and shadow. By suppressing the significant luminance change in tone mapping, naturalness of original image can be also preserved. The experimental results show that the proposed method preserves details and naturalness of original images.

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