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刘一然,杨旭波(上海交通大学计算机科学与工程系,上海 200240;智能计算与智能系统教育部-微软重点实验室,上海 200240;上海交通大学软件学院,上海 200240)

摘 要
Camera-based multi-projector radiometric compensation system

Liu Yi Ran,Yang Xubo(Shanghai Jiao Tong University)

Single projector radiometric compensation technique has made it possible for a projector to display on ordinary surface with colors and textures. However, when applying these methods to multi-projectors, many issues will happen,including the inconsistence in intensity of the overlapping areas, region expansion of a single pixel, all of which will lead to failure of the compensation. This paper presents a multi-projector and camera system with the ability of geometry correction, radiometric compensation and photometric consistency and solves the problems as mentioned. We use a convenient and iterative way to obtain more precise parameter of the reflection property for the projecting surface. This only considers two or more pictures of the projecting-surface, so that it can provide much better compensation results. We also improve the blending effects of the overlapped areas of multi-projectors and thus provide a unified solution for radiometric compensation and photometric inconsistency when displaying on non-optimized surfaces with multi-projectors. Experiments indicate the improvements of the new method compared to the original algorithm.