室内监控摄像机外参数多级标定方法

Indoor Surveillance Camera Parameter of Exterior Orientation Multi-level Calibration Method

针对室内监控摄像机高精度标定需求,本文提出一种外参数多级标定方法。首先,利用灭点约束获取监控摄像头初始姿态参数;然后,自适应匹配监控影像与室内三维模型;最后,通过间接平差优化监控摄像头外参数。本文采用海康威视监控摄像头进行了实验验证,结果表明本文方法可以获取高精度的外参数。

Aiming at high precision calibration requirements for indoor surveillance cameras,a hierarchical exterior orientation parameters calibration method for indoor surveillance camera is proposed. Firstly,the initial attitude parameters of surveillance camera are obtained constrained by vanishing points. After that,adapt match indoor model with surveillance image. Finally,exterior orientation parameters of surveillance camera are optimized iteratively by indirect adjustment. Indoor surveillance camera from Hikvision is employed for experiment; the result shows that the proposed method can obtain high precision exterior orientation parameters.