计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2009年
22期
221-223
,共3页
MSA火灾报警系统%双灭点%透视校正
MSA火災報警繫統%雙滅點%透視校正
MSA화재보경계통%쌍멸점%투시교정
Multi-Step-Alarm(MSA)%double vanishing point%perspective projection rectification
图像型火灾探测系统是MSA(Muhi-Step-Alarm)火灾系统中的重要环节,其重要任务之一是时监控场景中的火源进行精确定位.而在实际应用中,由于安装等因素的原因,要获取摄像机的图像坐标系与世界坐标系之间转换的关键参数非常困难.提出了一种基于双灭点的图像透视投影的坐标转换方法,该方法通过分析世界坐标系中4个点在图像坐标系中的位置关系,可以实现图像坐标系与世界坐标系之间的转换.实验结果证明该方法简便实用.
圖像型火災探測繫統是MSA(Muhi-Step-Alarm)火災繫統中的重要環節,其重要任務之一是時鑑控場景中的火源進行精確定位.而在實際應用中,由于安裝等因素的原因,要穫取攝像機的圖像坐標繫與世界坐標繫之間轉換的關鍵參數非常睏難.提齣瞭一種基于雙滅點的圖像透視投影的坐標轉換方法,該方法通過分析世界坐標繫中4箇點在圖像坐標繫中的位置關繫,可以實現圖像坐標繫與世界坐標繫之間的轉換.實驗結果證明該方法簡便實用.
도상형화재탐측계통시MSA(Muhi-Step-Alarm)화재계통중적중요배절,기중요임무지일시시감공장경중적화원진행정학정위.이재실제응용중,유우안장등인소적원인,요획취섭상궤적도상좌표계여세계좌표계지간전환적관건삼수비상곤난.제출료일충기우쌍멸점적도상투시투영적좌표전환방법,해방법통과분석세계좌표계중4개점재도상좌표계중적위치관계,가이실현도상좌표계여세계좌표계지간적전환.실험결과증명해방법간편실용.
Image based fire detection system is one of the most important factors of MSA(Multi-Step-Alarm) fire warning system,in which the precise location of fire is one of the most important missions.By the reasons of practical application such as allocation of monitor,the parameter of the transformation is difficult to get.In this paper,a method of perspective projection transform based on double vanishing point is proposed,which is able to transform image coordinate into world coordinate by analyzing the locations of four control points.Experiment results show the method is reliable and valid.
