摘要: A parametric camera model and calibration procedures are developed for an outdoor active system with pan, tilt zoom control. Unlike traditional methods, motion plays a key role in the process, no special laboratory setups required. Intrinsic parameters estimated automatically by fitting models to optic flow induced rotating zooming. No knowledge of 3D scene structure is needed. Extrinsic calculated actively sight sparse set surveyed landmarks over virtual hemispherical field view, yielding well-conditioned pose estimation problem.