简析摄像机镜头安装与观察效果的关系  

Brief Analysis on Relationship between Camera Lens Installation and Observation Effect

作　　者：王磊[1] 杨国胜[2] 汤威 WANG Lei;YANG Guosheng;TANG Wei(CIGIS(China)Limited,Beijing 100007,China;First Research Institute of the Ministry of Public Security of PRC,Beijing 100048,China;China Institute of Building Standard Design&Research,Beijing 100048,China)

机构地区：[1]建设综合勘察研究设计院有限公司,北京市100007 [2]公安部第一研究所,北京市100048 [3]中国建筑标准设计研究院有限公司,北京市100048

出　　处：《建筑电气》2020年第1期30-33,共4页Building Electricity

摘　　要：根据安装角度对摄像机镜头成像的影响,对理想状态下的成像计算公式进行修正。成像的清晰度是选择摄像机镜头重要的参数之一,对常用镜头的焦距进行计算,得出不同状态下目标在传感器上呈现的像素大小(横向与纵向)。通过计算、分析及研究,得出在不同安装角度下可根据现场需要监控的水平距离选择合适的摄像机。The imaging calculation formula in the ideal state is modified according to the influence of the installation angle on the camera lens imaging.The definition of imaging is one of the important parameters to select the camera lens.The focal length of the common lens is calculated to obtain the pixel sizes(horizontal and vertical)of the target on the sensor in different states.Through calculation,analysis and research,it is concluded that the appropriate cameras can be selected according to the horizontal distance that the site needs to monitor under different installation angles.

关 键 词：摄像机镜头 安装角度 焦距 物距 高度 像素 成像公式 镜头盲区 

分 类 号：TN948.[电子电信—信号与信息处理]