面向LCD多投影显示的三阶段光学校正方法  

A THREE-PHASE PHOTOMETRIC CALIBRATION APPROACH ORIENTED TO MULTI-PROJECTOR DISPLAY USING LCD PROJECTORS

作　　者：张磊[1] 

机构地区：[1]复旦大学软件学院,上海201203

出　　处：《计算机应用与软件》2010年第10期236-239,共4页Computer Applications and Software

摘　　要：光学校正对多投影无缝显示非常重要。用照相机作为测量工具,提出三阶段法构建三个显示模型解决多投影显示中遇到色度不一致和亮度不均匀的问题。三个模型分别被命名为单投影机模型、标准投影机模型和显示墙模型。单投影机模型描述投影机光学成像过程,标准投影机模型对每个投影机做规一化操作,显示墙模型中重新定义多投影显示的光学模型以达到无缝显示。给出不同品牌投影机协同工作的实验结果,表明方法对于多投影显示光学校正的有效性。Photometric calibration is very important for seamless appearance of tiled displays from multi-projectors.In this paper,we focus on using camera as the metric tool to solve chrominance variation and luminance nonuniformity problems in multi-project display through proposing a three-phase approach to construct three display models.These models are named as single-projector model,normalized-projector model and display-wall model.Single-projector model describes the whole imaging procedure,normalized-projector model normalizes each single-projector＇ s operation,and display-wall model redefines the imaging model of multi-projector display to reach the seamless display.Using projectors of different brands in experimental collaborated works,the results show that the method is effective in photometric calibration for multi-projector display.

关 键 词：多投影显示系统 光学校正 亮度响应函数 

分 类 号：TP315[自动化与计算机技术—计算机软件与理论]