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Determination of the Perceived Contrast Compensation Ratio for a Wide Range of Surround Luminance
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  • Determination of the Perceived Contrast Compensation Ratio for a Wide Range of Surround Luminance
  • Determination of the Perceived Contrast Compensation Ratio for a Wide Range of Surround Luminance
저자명
Baek. Ye Seul,Kim. Hong-Suk,Park. Seung-Ok
간행물명
Journal of the Optical Society of Korea
권/호정보
2014년|18권 1호|pp.89-94 (6 pages)
발행정보
한국광학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

It is established that the perceived image contrast is affected by surround luminance. In order to get the same perceived image contrast, the optimum surround compensation ratios for those surround conditions is needed. Much research has been performed for dark, dim, and average surrounds. In this study, a wide range of surround luminance from dark up to $2087cd/m^2$ was considered. Using magnitude estimation method, the change in perceived brightness of six test stimuli was measured under seven surround conditions; dark, dim, 2 levels of average, bright, and 2 levels of over-bright surrounds. To drive the perceived image contrast from the perceived brightness, two different definitions of contrast were tested. Their calculated results were compared with the visual data of our previous work. And to conclude, the perceived contrast compensation ratios were 1:1.11:1.2 for average, dim and dark surrounds. These were close to CIECAM02 model (1:1.17:1.31). Besides, for average, bright, over-bright1 and over-bright2 surrounds the ratios 1:1.17:1.42:1.69 were determined. For intermediate or more extreme surround conditions, the compensation ratio was obtained from the linear interpolation or extrapolation.