//----------------------------------------------------------------------------

 //  Copyright (C) 2004-2017 by EMGU Corporation. All rights reserved.

 //----------------------------------------------------------------------------

 using System;

 using System.Collections.Generic;

 using System.ComponentModel;

 using System.Data;

 using System.Drawing;

 using System.Text;

 using System.Windows.Forms;

 using Emgu.CV;

 using Emgu.CV.Cvb;

 using Emgu.CV.UI;

 using Emgu.CV.CvEnum;

 using Emgu.CV.Structure;

 using Emgu.CV.VideoSurveillance;

 using FaceDetection;

 using Emgu.CV.Cuda;

 using AOP.Common;

 using System.Drawing.Imaging;

 using Baidu.Aip.API;

 using System.Threading;

 using BaiduAIAPI.Model;

 namespace VideoSurveilance

 {

     public partial class VideoSurveilance : Form

     {

         private static VideoCapture _cameraCapture;

         private static BackgroundSubtractor _fgDetector;

         private static Emgu.CV.Cvb.CvBlobDetector _blobDetector;

         private static Emgu.CV.Cvb.CvTracks _tracker;

         private static Queue<ImageModel> FacIdentifyQueue = new Queue<ImageModel>();

         public Image faceImage;

         Thread t1;

         public VideoSurveilance()

         {

             InitializeComponent();

             Run();

         }

         void Run()

         {

             try

             {

                 _cameraCapture = new VideoCapture();

             }

             catch (Exception e)

             {

                 MessageBox.Show(e.Message);

                 return;

             }

             _fgDetector = new Emgu.CV.VideoSurveillance.BackgroundSubtractorMOG2();

             _blobDetector = new CvBlobDetector();

             _tracker = new CvTracks();

             Application.Idle += ProcessFrame;

         }

         void ProcessFrame(object sender, EventArgs e)

         {

             Mat frame = _cameraCapture.QueryFrame();

             Mat smoothedFrame = new Mat();

             CvInvoke.GaussianBlur(frame, smoothedFrame, new Size(, ), ); //filter out noises

                                                                             //frame._SmoothGaussian(3); 

             #region use the BG/FG detector to find the forground mask

             Mat forgroundMask = new Mat();

             _fgDetector.Apply(smoothedFrame, forgroundMask);

             #endregion

             CvBlobs blobs = new CvBlobs();

             _blobDetector.Detect(forgroundMask.ToImage<Gray, byte>(), blobs);

             blobs.FilterByArea(, int.MaxValue);

             float scale = (frame.Width + frame.Width) / 2.0f;

             _tracker.Update(blobs, 0.01 * scale, , );

             long detectionTime;

             List<Rectangle> faces = new List<Rectangle>();

             List<Rectangle> eyes = new List<Rectangle>();

             IImage image = (IImage)frame;//这一步是重点

             faceImage = frame.Bitmap;

             DetectFace.Detect(image

              , "haarcascade_frontalface_default.xml", "haarcascade_eye.xml",

               faces, eyes,

               out detectionTime);

             #region 多人识别

            Graphics g1 = Graphics.FromImage(frame.Bitmap);

            List<FaceIdentifyModel> tempList = new List<FaceIdentifyModel>();

            foreach (Rectangle face in faces)

             {

                Image rectImage1 = ImageHelper.CaptureImage(frame.Bitmap, face);// 自己封装的方法，通过大图截取矩形框的人脸图片，返回Image 对象

                FaceIdentifyModel MoreIdentifyInfo = FaceAPI.FaceIdentify(rectImage1, tb_Group.Text.Trim(), 1, 1);
                MoreIdentifyInfo.rect = face;

                tempList.Add(MoreIdentifyInfo);

             }

             Color color_of_pen1 = Color.Gray;

             color_of_pen1 = Color.Yellow;

             Pen pen1 = new Pen(color_of_pen1, 2.0f);

             Font font1 = new Font("微软雅黑", 16, GraphicsUnit.Pixel);

             SolidBrush drawBrush1 = new SolidBrush(Color.Yellow);

             tb_Identify.Text = tempList.ToJson();

             foreach (var t in tempList)

             {

                 g1.DrawRectangle(pen1, t.rect);

                if (t.result != null)

                {

                     g1.DrawString(t.result[0].user_info.Replace("，", "\r\n"), font1, drawBrush1, new Point(t.rect.X + 20, t.rect.Y - 20));

                }

             }

             #endregion

             imageBox1.Image = frame;

             imageBox2.Image = forgroundMask;

         }

         private void btn_Screenshot_Click(object sender, EventArgs e)

         {

             if (faceImage != null)

             {

                 System.Drawing.Image ResourceImage = faceImage;

                 string fileDir = System.Environment.CurrentDirectory + "\\Snapshot\\";

                 FileHelper.CreateDir(fileDir);

                 string filePath = fileDir + DateTime.Now.ToString("yyyyMMddHHmmss") + ".png";

                 ResourceImage.Save(filePath);

                 MessageBox.Show("保存成功！" + filePath);

             }

         }

     }

 }