Focal Length
摄像机焦距
Recommended Vertical
Capture Distance
(d)
推荐纵向抓拍距离 d
Recommended Horizontal
Capture Width (w)
推荐横向抓拍宽度 w
IPC Installation Height
(h)
摄像机安装高度
h
15
6
3
2.5-3.5
50
16
3
2.5-3.5
Solid figure of IPC installation requirements
摄像机安装要求立体图
3
For more camera installation requirements, please log on to the
http://support.huawei.com/enterprise
website to get the document of Huawei IPC Facial Snapshot Ducument.
更多的摄像机安装要求，请登录
http://support.huawei.com/enterprise
网站，获取《华为智能 IPC 人脸抓拍专题》
文档，或者联系华为工程师获取。
2
•
The following table describes the Vertical Capture Distance , Horizontal Capture Width, and installation
height of X2221-FL.
•
X2221-FL 镜头的纵向抓拍距离、横向抓拍宽度、安装高度的推荐关系如下表所示。
• The following table lists the recommended vertical capture distance (d) and recommended horizontal capture
width (w) when the face width is 120 pixels.
• 人脸宽度为 120像素时，
推荐的纵向抓拍距离 d 和推荐横向抓拍宽度 w 如下所示。
w
Install the camera at a proper height and in proper illumination conditions. The proper camera installation
height and illumination intensity can help capture clearer images. At the same time, a proper installation
height can avoid faces being blocked and ensure that faces of people of all heights can be captured.
Additionally, ensure that faces appear in the middle of the video image and the surveillance image covers the
entire detection area.
合适的摄像机高度和光照强度能保证图像质量；同时避免人脸重叠遮挡，保证不同高矮人员经过时能正常抓拍。确保行
人的人脸出现在摄像机画面中央位置，监控画面能完整覆盖到抓拍通道。
1
Environmental requirements
环境要求
Illumination
intensity
光照强度
• The recommended illumination ranges from 70 lux to 900 lux.
• 建议70lux~900lux。
• The outdoor direct sunlight intensity may exceed 900 lux. If the capture effect is
unsatisfactory, add a sunshield for the camera.
• 室外太阳直射光照强度可能超过900lux，若抓拍效果不理想，需增加遮阳设备。
• To capture images at night, install an illuminator for the camera or select a bullet camera
with a built-in illuminator.
• 若需夜间抓拍，要安装补光灯或者选用自带补光灯的筒机。
Direction of
light
光线方向
• Even illumination is required. In backlight, strong light, or uneven illumination conditions,
the captured face image quality may be affected.
• 光照要求均匀，逆光/强光/阴阳脸均可能影响抓拍的人脸图像质量。
Pedestrian requirements
行人要求
Moving speed
行进速度
• Normal walking speed, neither cycling nor vehicle driving
• 正常步行速度，无骑行，无人车混杂。
Moving
direction
行走方向
• Pedestrians travel direction. For instance, at the turnstile or campus entrance and exit,
pedestrians walk through a designated path to facilitate image capture.
• 行人的行走规律，比如闸机、园区出入口，行人按照约束的通道行走，以便于抓拍。
Camera installation requirements
摄像机安装整体要求
Camera
installation
location
摄像机安装位置
• The recommended camera installation height ranges from 2.5 m to 3.5 m.
• 摄像机安装高度一般为2.5米~3.5米；
• The width of the optimal capture area is generally less than or equal to 3 m.
• 最佳抓拍位置覆盖宽度一般不超过3米；
• The camera should directly face pedestrians to ensure a better capture effect. Therefore,
it is essential to consider the installation position and image coverage width during scene
selection.
• 摄像机需正对行人，角度越正抓拍效果越好。建议在场景选择时，考虑架设位置和画面覆盖宽度。
Recommended
scenes
推荐场景举例
• Indoor corridor with sufficient light
• 光照充足的室内走廊
• Subway turnstile
• 地铁闸机
• Campus and event venue entrance/exit
• 园区、大厅出入口
• Security gate
• 安检门
A. Device Installation Requirements/ 设备安装要求
Device Installation Requirements/ 设备安装要求
