基于ICC机制的多投影仪拼接显示实验研究

Experimental Research on Multiple Projectors Tiled Displaying Based on ICC Mechanism

显色一致性是实现多投影仪拼接显示所必须解决的一个关键问题。本研究以两台投影仪组成的拼接显示系统为例,创新地提出采用基于ICC色彩管理机制的颜色调整方法以实现非重叠投影区域的颜色一致性,采用分段抛物线插值算法实现重叠投影区域的颜色一致性。具体的研究工作包括:采用矩阵模型,计算生成投影仪的ICC颜色特性文件;采用三维查找表计算生成投影仪的ICC颜色特性文件;分别利用上述两种方法生成的ICC,通过颜色空间转换实验比较两种ICC的匹配精度,并验证基于ICC色彩管理机制的非重叠投影区域颜色调整方法的可行性;基于分段抛物线插值算法,借助Quest3D虚拟现实开发平台,验证重叠投影区域亮度调整方法的可行性。

The color uniformity is the key problem of the multiple projectors tiled display systems and getting more and more attention. In this study, taking the tiled two -projector display system as a case, the color calibration method based on ICC color management mechanism was proposed and used to achieve the color uniformity of the non - overlapping projected region firstly. And the piecewise parabola interpretation algorithm was used to achieve the color uniformity of the overlapping projected region. The research content included： ICC profile of the projector based on matrix model was calculated and generated, ICC profile of the projector based on 3 - dimensions lookup table model was calculated and generated, color - matching precision of the above two types of ICC profiles were compared by the color space conversion experiment, and the feasi- bility of color calibration method of the non - overlapping projected region based on ICC color management mechanism was verified. The feasibility of color calibration method of the overlapping projected region based on piecewise parabola interpretation algorithm was also verified on Quest3D development platform.