彩色数码设备色彩还原能力直接影响彩色图像的最终呈现效果, 是彩色数码设备性能设计优劣的一个重要指标。为研究低光照度下不同彩色数码设备的色彩还原能力, 本文提出了一种简便快 捷的可视化客观色彩还原能力评价方法,该方法首先将RGB三基色颜色空间转换到CIELAB颜色空间, 并基于CIEDE2000色差公式在CIELAB颜色空间建立全面客观的量化评价指标, 最终基于VC++软件平 台开发了上位机软件程序, 能实现对彩色数码设备的色彩还原能力的现场评价。实验结果表明, 该评价方法与主观视觉感受吻合较好, 能为低光照度环境下的彩色数码设备色彩还原能力提供一种有 效的评价方法。

The color reproduction capability of the color digital devices directly affects the final rendering effect of color images, and is an important indicator of the performance design of the color digital devices. In order to study the color reproduction ability of different color digital devices under low light, a simple and fast visual objective color reproduction ability evaluation method is proposed. This method firstly converts the RGB three-primary color space to CIELAB color space, and establishes a comprehensive and objective quantitative evaluation index in the CIELAB color space based on CIEDE2000 color difference formula. Finally, a host computer software program is developed based on the VC++ software platform, which can realize the on-site evaluation of the color reproduction ability of color digital equipment. The experimental results show that the evaluation method is in good agreement with the subjective visual perception, and can provide an effective evaluation method for the color reproduction ability of color digital devices in a low light environment.