自动化几何校正中相机位姿自动校正方法  

Automatic Location Method of Camera for Geometrical Calibration

作　　者：赵恒[1] 李辉[1] 费向东[1] 

机构地区：[1]四川大学计算机学院图形图像研究所,四川成都610064

出　　处：《微计算机信息》2010年第1期172-173,216,共3页Control & Automation

基　　金：基金申请人:李辉;项目名称:虚拟场景与真实场景的实时融合与交互技术;基金颁发部门:国家863计划资助(2007AA01Z328)

摘　　要：为了解决多投影仪拼接显示系统自动几何校正中相机位姿的自动校正问题,提出了一种利用目标区域角点集的最小外接矩形确定目标的倾斜状态的方法。首先运用Harris角点检测算子检测出目标区域的角点集,并根据角点集的凸包求其最小外接矩形,然后计算最小外接矩形的长或宽的斜率判断出目标区域的倾斜状态,最后结合云台的控制,对相机姿态做出实时调整,实现了自动几何校正工作中相机位姿的自动校正功能。In order to solve the problem of auto-adjust the camera pose in multi-projector displays system geometrical auto-calibration,a method was proposed to determine the target area s tilt state,using the mininum enclosing rectangle of target area s corner set.Firstly,using Harris corner detector to detect the corner set of the target area,then calculate the minimum enclosing rectangle according to the the convex hull of the corner set,and then figure out the slope of the mininum enclosing rectangle s edge,finally, combining with platform control of the camera to make real-time attitude adjustment.

关 键 词：多投影仪显示 自动几何校正 HARRIS角点检测 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]