AForge.NET专为计算机视觉和人工智能应用而设计，这种C#框架适用于图像处理、神经网络、遗传算法、模糊逻辑、机器学习和机器人等。

该库是一个开源项目，包括：

AForge.Imaging —— 一些日常的图像处理和过滤器

AForge.Vision —— 计算机视觉应用类库

AForge.Neuro —— 神经网络计算库AForge.Genetic -进化算法编程库

AForge.MachineLearning —— 机器学习类库

AForge.Robotics —— 提供一些机器人的工具类库

AForge.Video —— 一系列的视频处理类库

AForge.Fuzzy —— 模糊推理系统类库

AForge.Controls—— 图像，三维，图表显示控件

具体见官网：http://www.aforgenet.com/

简单用法如下：

1、安装包：VS→工具→包管理器→输入关键字“AForge”→安装

2、获取本机摄像头、声卡设备列表

List<string> VideoList = GetVideoInDevicesList();VideolistBox.DataSource = VideoList;List<string> AudioList = GetAudioInDevicesList();AudiolistBox.DataSource = AudioList;/// <summary>/// 获取摄像头列表/// </summary>/// <returns></returns>public static List<string> GetVideoInDevicesList(){List<string> devicesList = new List<string>();try{var videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);foreach (FilterInfo device in videoDevices){devicesList.Add(device.Name);}}catch (Exception ex){Console.WriteLine(ex.Message);}return devicesList;}/// <summary>/// 获取音频设备列表/// </summary>/// <returns></returns>public static List<string> GetAudioInDevicesList(){List<string> devicesList = new List<string>();try{var videoDevices = new FilterInfoCollection(FilterCategory.AudioInputDevice);//输入设备foreach (FilterInfo device in videoDevices){devicesList.Add(device.Name);}}catch (ApplicationException){Console.WriteLine("No local capture devices");}return devicesList;}

运行结果：

3、打开摄像头显示内容：

var videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);FilterInfo info = videoDevices[VideolistBox.SelectedIndex];var videoSource = new VideoCaptureDevice(info.MonikerString);AForge.Controls.VideoSourcePlayer videoSourcePlayer1 = new AForge.Controls.VideoSourcePlayer();videoSourcePlayer1.VideoSource = videoSource;videoSourcePlayer1.Width = 1600;videoSourcePlayer1.Height = 900;this.Controls.Add(videoSourcePlayer1);videoSourcePlayer1.Start();

4、调整分辨率

private void SetResolution(){//分辨率调整至最高try{var videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);FilterInfo info = videoDevices[VideolistBox.SelectedIndex];var videoSource = new VideoCaptureDevice(info.MonikerString);var formats = videoSource.VideoCapabilities;if (formats.Length > 1){videoSource.VideoResolution = formats[0];//默认第一个就是最高分辨率}}catch { }}

5、调用摄像头参数面板

//摄像头参数设置private void CamSetup(){var videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);FilterInfo info = videoDevices[VideolistBox.SelectedIndex];VideoCaptureDevice videoCaptureDevice = new VideoCaptureDevice(info.MonikerString);try{videoCaptureDevice.DisplayPropertyPage(this.Handle);}catch{MessageBox.Show("所选视频设备不支持设置页面","出错",MessageBoxButtons.OK,MessageBoxIcon.Error,MessageBoxDefaultButton.Button1);}}

6、画面的放大、平移

方法：

详见：http://www.aforgenet.com/framework/docs/html/077a7afb-c9bd-91b6-6870-61440e2f4060.htm

public bool SetCameraProperty(CameraControlProperty property,int value,CameraControlFlags controlFlags)

其中：property

Pan

水平移动（放大后）-16 至 +16

Tilt

垂直移动（放大后）-16 至 +16

Roll

旋转 0 至 3

Zoom

缩放 100 至 400

Exposure

曝光 -12 至 -3

Iris

红外灯

Focus

聚焦

value：Int32数字

controlFlags：

None（No control flag.）Auto （自动）Manual （手工）

实例：

var videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);FilterInfo info = videoDevices[VideolistBox.SelectedIndex];VideoCaptureDevice videoCaptureDevice = new VideoCaptureDevice(info.MonikerString);try{videoCaptureDevice.SetCameraProperty(CameraControlProperty.Zoom, 400, CameraControlFlags.Manual);}catch{MessageBox.Show("所选视频设备不支持","出错",MessageBoxButtons.OK,MessageBoxIcon.Error,MessageBoxDefaultButton.Button1);}

参考：