Camera Based Calibration Techniques for Seamless Flexible Multi-Projector Displays
Ruigang Yang, Aditi Majumder, Michael S. Brown · 2004
Multi-projector large-scale displays are commonly used in scientific visualization, VR, and other visually intensive applications. In recent years, several camera-based computer vision techniques have been developed that help 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, computing per-projector corrective warps and intensity correction to create seamless imagery across projector mosaics. These techniques have made projector-based displays cost-effective, low-maintenance, and flexible. In this paper, we present a summary of the different camera-based geometric and color registration techniques. Several techniques have been proposed and demonstrated, each addressing particular display configurations and modes of operation. We overview each of these approaches and