Improvement of the Assessment of the Recognized Illuminant by Depth Separation
Perceptual achromatic setting has been claimed to be a method of assessing the recognized illuminant in an environment. The result, however, is not spatially valid because of some effect of an immediate area of the test (local effect). We considered a method to improve the assessment. We hypothesized that a depth separation between the test and its immediate area would be an effective way. Subjects made the perceptual achromatic setting under one whitish illumination and four chromatic illuminations. The setting results were compared among depth and no depth separation configuration. We found that the assessment of the recognized illuminant can be improved by the depth separation configuration. The local effect is decreased and shows less influence on the perceptual achromatic setting. Under the chromatic illumination, depth separation is more effective to exclude the local effect than under whitish illumination.
Perceptual achromatic setting recognized illuminant local effect depth separation
K. Rattanakasamsuk H. Shinoda
Human Vision Laboratory, Graduate school of Science and Engineering, Ritsumeikan University, Shiga, Japan
国际会议
杭州
英文
285-288
2007-07-12（万方平台首次上网日期，不代表论文的发表时间）