多投影拼接显示系统颜色调整技术比较研究

Comparative Research of Color Calibration Techniques in Tiled Multi-projector Display System

多投影拼接显示系统越来越广泛地应用于科学计算可视化、工业设计、虚拟仿真等领域。该系统要解决的一个关键问题就是颜色匹配,导致颜色不匹配的主要原因可以归结为投影仪自身颜色特性的变化和投影环境与投影设备的不同两个方面。国内外提出了多种颜色调整技术,根据调整原理和实现路径的不同,可分为:基于光学系统的硬件调整技术、基于投影仪颜色属性测量的反馈调整技术、基于模型和算法的图像预处理调整技术。本文针对这三种类型的调整方案进行比较分析,并对该技术的发展进行展望。

Tiled multi-projector display systems are widely used in scientific visualization,industrial design,virtual simulation and other fields.A key issue of this system is color matching.The main cause of mismatching can be attributed to the following two aspects,which are the color characteristics of the projector and different environment and projectors.A variety of color calibration techniques have been proposed at home and abroad,the main methods can be classified into three types according to the different principles and implement paths,which are adjustment technique based on optical systems,the feedback adjustment technique based on the projectors＇ color characteristics,and the image pretreatment adjustment technique based on models and algorithms.In this paper,three adjustment techniques were analyzed,and the development of the color calibration technique was prospected.