普通办公照明环境下数码照相机的颜色特性化  

Colorimetric Characterization of a Digital Camera under General Office Lighting Environments

作　　者：宓超波[1] 黄小乔[1] 石俊生[1] 

机构地区：[1]云南师范大学颜色与图像视觉实验室,云南昆明650500

出　　处：《光学学报》2013年第9期319-324,共6页Acta Optica Sinica

基　　金：国家自然科学基金(61178054);云南省教育厅科学研究基金(2012Y171)

摘　　要：彩色数字设备颜色特性化是图像复制色彩管理流程中颜色转换的基础。为了让普通用户也可以实现照相机特性化,在研究白天自然光和夜晚日光灯2种办公照明环境下使用仪器特性化的基础上,提出一种自然光办公照明环境下不使用专业仪器的特性化方案,该方案只需要用户拥有一张ColorChecker 24色色卡。对特性化精度实验研究结果表明:在普通办公室环境下采用专业仪器测量,日光灯和自然光照明环境下的特性化精度平均在3.5～3.9个CMC(1:1)色差单位;在自然光照明环境下,不使用仪器测量的特性化精度是3.75个CMC(1:1)色差单位,与使用仪器测量的3.48个CMC(1:1)色差单位相比增加非常小;晴朗白天12:00～15:00,自然光照度变化和色温变化条件下,不使用仪器测量的特性化精度变化在0.5个CMC(1:1)色差单位,说明了该方案具有实用性。The colorimetric characterization of digital color devices is the basis of image copy and color management process. Aiming to provide convenience for general users to characterize camera, based on studies of the characterization using instruments to measure samples under two office environments of daylight lighting during the day and fluorescent lighting at night, a characterization scheme that a user does not use professional instruments under daylight lighting is presented, but on one condition that the user has ColorChecker standards 24 color card. The characterization accuracy is studied, and experimental results show that, using professional instruments to measure samples, the characterization accuracy is 3. 5 ～ 3. 9 CMC （1： 1） color difference units under environments of fluorescent （lighting and daylight lighting） not using instruments, the characterization accuracy is 3.75 CMC （1 ： 1） color difference units under the environment of daylight lighting, and the difference of characterization accuracy is very small between using and not using instruments; not using instruments, the characterization accuracy varies in 0.5 CMC （1： 1） color units at the condition of daylight changes in illumination and color temperature during sunny day from 12：00 to 15：00.

关 键 词：视觉光学 色度学 色彩管理 数码相机 颜色特性化 

分 类 号：O436[机械工程—光学工程]