背景环境

1、采用Emgu.CV 4.1.1.x + WPF + .NET Framework 4.5x

2、数据库及ORM框架：Mysql 5.7x + SqlSgar 5.0.3.2

实现效果图

实现过程

一、摄像管理

1、摄像开启与关闭

(1) 开启摄像

/* 前提：先设计好Wpf设计界面（如图所示）
 * 人脸头像：imageDes(Image类型)
 *
 * 摄像区域：imageShow(ImageBox类型) 
 * 属于Emgu.CV.UI.ImageBox(WinForm对象)，通过<WindowsFormsHost Margin="0" x:Name="windowsFormHost1">……</WindowsFormsHost>进行调用
 * 需引用：【xmlns:ui="clr-namespace:Emgu.CV.UI;assembly=Emgu.CV.UI"】 
 *
 * 具体实现部分：
 * 1.先申明所需的对象
 * 2.调用摄像头对象ImageGrabbed事件进行人脸捕获
*/

/// <summary>
/// 摄像头对象
/// </summary>
private VideoCapture capture { get; set; }

/// <summary>
/// 摄像头图像
/// </summary>
private UMat uMat { get; set; }

/// <summary>
/// 人脸数量
/// </summary>
private int faceDetectCount = 0;

/// <summary>
/// 人脸训练模型
/// </summary>
private FaceTranModel facetranModel;

/// <summary>
/// 开启摄像
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnCollect_Click(object sender, RoutedEventArgs e)
{
    capture = new VideoCapture(0)
    {
       //图像水平反转
       FlipHorizontal = true
    };

    //capture.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.Fps, 30);
    capture.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.FrameWidth, 480);//480*320
    capture.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.FrameHeight, 270);
    //capture.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.Zoom, 0.5);

    try
    {
        //重置PictureBox对象
        imageShow.Image = null;

        //实时获取图像
        capture.ImageGrabbed += (s, ee) =>
        {
            uMat = new UMat();
            capture.Retrieve(uMat, 1);

            faceDetectCount = FaceRecognizeHelper.FaceDetecting(uMat);
            imageShow.Image = uMat;
        };
        capture.Start();
    }
    catch (Exception ex)
    {
        LogTextHelper.Error("[ERROR] 摄像头开启失败：" + ex.Message);
        //MessageDxUtil.ShowError(ex.Message);
        LoadLogInfo();
    }

    BtnCollect.IsEnabled = !capture.IsOpened;
}

/// <summary>
/// 加载跟踪日志
/// </summary>
private void LoadLogInfo()
{
    //清空缓存数据
    richTBoxLog.Document.Blocks.Clear();

    string Logfile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Log",
                DateTime.Now.ToString("yyyyMMdd") + ".log");

    if (File.Exists(Logfile))
    {
        Parah.Inlines.Add(FileUtil.FileToString(Logfile));

        FlowDoc.Blocks.Add(Parah);
        richTBoxLog.Document = FlowDoc;
    }
}


/*构造窗体函数*/
public MainWindow()
{
    InitializeComponent();
    facetranModel = new FaceTranModel();
    DataContext = facetranModel;

}

（2）关闭摄像 

/// <summary>
/// 关闭摄像头
/// </summary>
private void StopVedioCamera()
{
    capture.Stop();
    capture.Dispose();
    capture = null;
}

 2、人脸数据采集

(1) 检查验证输入

#region 检查验证输入

/// <summary>
/// 验证TextBox输入内容
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
private bool CheckName(TextBox tBox)
{
    string name = tBox.Text.Trim();
    if (string.IsNullOrEmpty(name))
    {
        MessageDxUtil.ShowWarning("用户姓名不能为空！");
        tBox.Focus();
        return false;
    }

    if (name.IndexOfAny(System.IO.Path.GetInvalidFileNameChars()) >= 0)
    {
        MessageDxUtil.ShowWarning("用户姓名有非法字符！");
        tBox.Focus();
        return false;
    }
    return true;
}

/// <summary>
/// 验证Image加载的图片
/// </summary>
/// <param name="picImage"></param>
/// <returns></returns>
private bool CheckPicture(System.Windows.Controls.Image picImage)
{
    if (picImage.Source == null)
    {
       MessageDxUtil.ShowWarning("未检测到人脸，请重新采集！");
       picImage.Focus();
       return false;
    }
    return true;
}
#endregion


/* MessageDxUtil 公共会话类 */
public class MessageDxUtil
{
    /// <summary>
    /// 显示一般的提示信息
    /// </summary>
    /// <param name="message">提示信息</param>
    public static DialogResult ShowTips(string message)
    {
        return MessageBox.Show(message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
    }

    /// <summary>
    /// 显示警告信息
    /// </summary>
    /// <param name="message">警告信息</param>
    public static DialogResult ShowWarning(string message)
    {
        return MessageBox.Show(message, "警告信息", MessageBoxButtons.OK, MessageBoxIcon.Warning);
    }

    /// <summary>
    /// 显示错误信息
    /// </summary>
    /// <param name="message">错误信息</param>
    public static DialogResult ShowError(string message)
    {
        return MessageBox.Show(message, "错误信息", MessageBoxButtons.OK, MessageBoxIcon.Error);
    }

  /* 其它省略 */
}

 （2） 采集事件

/// <summary>
/// 采集人脸
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnAdd_Click(object sender, RoutedEventArgs e)
{
    if (c