C# AForge的简单使用

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

C# AForge的简单使用_第1张图片

2、获取本机摄像头、声卡设备列表

List VideoList = GetVideoInDevicesList();
VideolistBox.DataSource = VideoList;

List AudioList = GetAudioInDevicesList();
AudiolistBox.DataSource = AudioList;

/// 
/// 获取摄像头列表
/// 
/// 
public static List GetVideoInDevicesList()
{
    List devicesList = new List();
    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;
}

/// 
/// 获取音频设备列表
/// 
/// 
public static List GetAudioInDevicesList()
{
    List devicesList = new List();
    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:

C# AForge的简单使用_第2张图片

 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);
    }

}

C# AForge的简单使用_第3张图片

 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:

C# AForge的简单使用_第4张图片

 

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