2014年12月
Standard deviation of luminance distribution affects lightness and pupillary response
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
- ,
- 巻
- 31
- 号
- 12
- 開始ページ
- 2795
- 終了ページ
- 2805
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/JOSAA.31.002795
- 出版者・発行元
- OPTICAL SOC AMER
We examined whether the standard deviation (SD) of luminance distribution serves as information of illumination. We measured the lightness of a patch presented in the center of a scrambled-dot pattern while manipulating the SD of the luminance distribution. Results showed that lightness decreased as the SD of the surround stimulus increased. We also measured pupil diameter while viewing a similar stimulus. The pupil diameter decreased as the SD of luminance distribution of the stimuli increased. We confirmed that these results were not obtained because of the increase of the highest luminance in the stimulus. Furthermore, results of field measurements revealed a correlation between the SD of luminance distribution and illuminance in natural scenes. These results indicated that the visual system refers to the SD of the luminance distribution in the visual stimulus to estimate the scene illumination. (C) 2014 Optical Society of America
- リンク情報
- ID情報
-
- DOI : 10.1364/JOSAA.31.002795
- ISSN : 1084-7529
- eISSN : 1520-8532
- PubMed ID : 25606770
- Web of Science ID : WOS:000345902400034