Determination of the Perceived Contrast Compensation Ratio for a Wide Range of Surround Luminance

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