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要通过ONVIF控制云台,首先需要使用ONVIF协议与摄像头进行通信。下面是一个简单的示例代码,演示如何使用C#语言通过ONVIF控制云台:
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.ServiceModel; using System.ServiceModel.Discovery; using System.ServiceModel.Description; using System.ServiceModel.Channels; namespace ONVIFControl { class Program { static void Main(string[] args) { try { // Create a discovery client to find ONVIF devices on the network DiscoveryClient discoveryClient = new DiscoveryClient(new UdpDiscoveryEndpoint()); FindCriteria findCriteria = new FindCriteria(typeof(PTZBinding), new MetadataSet()); findCriteria.Duration = TimeSpan.FromSeconds(10); FindResponse findResponse = discoveryClient.Find(findCriteria); // Get the endpoint address of the first device found EndpointAddress endpointAddress = findResponse.Endpoints[0].Address; // Create a PTZ client to control the PTZ functions of the device PTZClient ptzClient = new PTZClient(new CustomBinding(new TextMessageEncodingBindingElement(), new HttpTransportBindingElement()), endpointAddress); // Get the PTZ configuration of the device PTZConfiguration[] ptzConfigurations = ptzClient.GetConfigurations(); string profileToken = ptzConfigurations[0].token; // Perform PTZ operations on the device ptzClient.ContinuousMove(profileToken, new PTZSpeed { PanTilt = new Vector2D { x = 1, y = 1 } }, null); Console.WriteLine("PTZ control successful"); } catch (Exception ex) { Console.WriteLine("Error: " + ex.Message); } } } }
在这个示例代码中,我们首先创建一个DiscoveryClient对象,用于查找网络上的ONVIF设备。然后,我们创建一个PTZClient对象,用于控制PTZ功能。通过调用PTZClient的方法,我们可以获取设备的PTZ配置信息,并执行PTZ操作,比如连续移动云台。最后,我们将控制结果输出到控制台。
请注意,这只是一个简单的示例代码,实际中可能需要根据摄像头的具体型号和功能进行调整。另外,需要确保设备支持ONVIF协议,并且已经正确配置了网络连接和权限。