利用自然光照明办公环境特性化相机校正手掌颜色的研究

数码相机作为一种主要的图像获取工具已经成为大众消费品,而且也可以作为一种颜色获取工具得到应用。利用自然光照明办公环境下使用国际标准色卡ColorChecker特性化方法校正手掌图像,研究不同照相机在不同设置下获取手掌颜色的一致性。实验结果表明,特性化相机的方法对不同相机在不同光圈、曝光设置下拍摄的手掌图像校正效果明显,手掌图像校正后一致性效果明显,其手掌颜色从校正前的"均方色差"为6.22个CIELAB色差单位,变化到校正后"均方色差"为0.84个CIELAB色差单位。

Study on Color Calibration of Human Palm Based on Color Characterization of Digital Camera under the Office Environment of Daylight Lighting

Digital camera as a major image acquisition tool has become an electronic product for general consumers,and also can be used as a measurement tool of color in some applications.In this paper,aims to get color consistency of human palm images with different cameras in different settings,color calibration of human palm was studied based on the color characterization method of digital camera under the office environments of daylight lighting.Experimental results showed that the effects of color calibration for palm images was obvious for different cameras in different settings of aperture,exposure time and automatic sets,and the mean square color deviation of palm images varied from 6.24 of pre-correction to 0.92 CIELAB color difference units of the corrected.