A practical image alignment method based on self-adapting subdivision mesh is proposed

which can align the projector imagery on arbitrary smooth curved screen with camera image. It is designed for calibration problem of multi-projector displays. Using sparse initial corresponding points between the frame buffer of projector and the image of camera

the proposed method can subdivide it into arbitrary precision. Hence

the one to one correspondence of pixels between the frame buffer of projector and image of camera can be established. This correspondence can be used as the foundation of methods for the calibration problem of multi-projector displays. Comparative analysis of existing algorithms and real applications on virtual airport control tower simulation system show that the proposed method can align images more accurately

without any explicit prior knowledge of projector

camera and screen.