Automatic Calibration Techniques For Multi-Projector Display Systems

Multi-projector display systems are built by combining the images from arrays of projectors. Multi-projector display system can provide a huge number of pixel elements and a large area of display to applications needing to visually represent a large amount of information. Recently, multi-projector display systems are commonly used in many applications such as military, scientific computing, simulation, entertainments, etc. Many research institutions and companies have make great efforts to research and develop the techniques for multi-projector display system, including the Display Wall of Princeton University, the Power Wall of Minnesota University, the Info Wall of AT&T. Multi-projector display technology has become a important branch of the technology of computer displays.The key techniques of multi-projector display system include geometry alignment, color correction, and edge blending. Recently, the scale of display systems is becoming larger and larger. As a result, how to reduce the costs and improve the quality to deployment the system is a crucial problem. In recent years, camera-based computer vision techniques have been developed that helps to reduce the effort needed to construct tiled projection-based display such that they are seamless both in terms of geometry and color. These automated techniques have replaced the traditional labor intensive manual deployment by using cameras to"calibrate"display geometry and photometry. On the basis of...