A Geometry Calibration and Visual Seamlessness Method Based on Multi-projector Tiled Display Wall

Multi-projector virtual environment based on PC cluster has characteristics of low cost, high resolution and widely visual angle, which has become a research hotspot in virtual reality application. Geometric distortion calibration and seamless splicing is key problems in multi-projector display. The paper does research on geometry calibration method and edge blending. It proposes an automatic calibration preprocessing algorithm based on a camera, which projects images to the regions expected in terms of the relation between a plane surface and a curved surface and texture mapping method. In addition, overlap regions, which bring about intensity imbalance regions, may be adjusted by an edge blending function. Implementation indicates that the approach can accomplish geometry calibration and edge blending on an annular screen.