人脸认证源码faceIdentify

人脸认证：

using AForge.Video.DirectShow;
using face;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Camtest
{
    public partial class faceIdentify : Form
    {
        public faceIdentify()
        {
            InitializeComponent();
            //启动默认在屏幕中间
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
        }
        //Api_Key
        public static string Api_Key = "OVYw5Ok0y9U8n6CfVPYt0wfZ";
        //Secret_Key
        public static string Secret_Key = "aCN3lupCarq3rC9G8Rylqz1d36Towp8G";
        FilterInfoCollection videoDevices;
        VideoCaptureDevice videoSource;
        public int selectedDeviceIndex = 0;
        public int selectedPICIndex = 0;

        //窗体加载
        private void faceIdentify_Load(object sender, EventArgs e)
        {
           //显示为正在检测
            this.label1.Text = this.label2.Text = this.label6.Text = this.label9.Text = "正在识别";

            // 刷新可用相机的列表
            videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            comboBoxCameras.Items.Clear();

            for (int i = 0; i < videoDevices.Count; i++)
            {
                comboBoxCameras.Items.Add(videoDevices[i].Name.ToString());
            }


            if (comboBoxCameras.Items.Count > 0)
                comboBoxCameras.SelectedIndex = 0;
            picsize.SelectedIndex = 0;

            //打开摄像头
            openCamera();
        }

        //打开摄像头
        public void openCamera()
        {
            selectedPICIndex = picsize.SelectedIndex;

            selectedDeviceIndex = comboBoxCameras.SelectedIndex;
            //连接摄像头。
            videoSource = new VideoCaptureDevice(videoDevices[selectedDeviceIndex].MonikerString);
            videoSource.VideoResolution = videoSource.VideoCapabilities[selectedDeviceIndex];
            // 枚举所有摄像头支持的像素，设置拍照为1920*1080
            foreach (VideoCapabilities capab in videoSource.VideoCapabilities)
            {
                if (selectedPICIndex == 0)
                {
                    if (capab.FrameSize.Width == 1920 && capab.FrameSize.Height == 1080)
                    {
                        videoSource.VideoResolution = capab;
                        break;
                    }
                    if (capab.FrameSize.Width == 1280 && capab.FrameSize.Height == 720)
                    {
                        videoSource.VideoResolution = capab;
                        break;
                    }
                }
                else
                {
                    if (capab.FrameSize.Width == 1280 && capab.FrameSize.Height == 720)
                    {
                        videoSource.VideoResolution = capab;
                        break;
                    }
                }
            }
            videoSourcePlayer1.VideoSource = videoSource;

            // set NewFrame event handler
            videoSourcePlayer1.Start();
        }

        /// <summary>
        /// 签到的按钮
        /// 先保存图片，然后进行比较，获取的id，查询
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void qiandao_Click(object sender, EventArgs e)
        {
            Users users = FaceIdentifys(SavePicture());
            this.label1.Text = users.age.ToString();
            this.label2.Text = users.name;
            this.label6.Text = users.phone;
            this.label9.Text = users.address;
            if (users.picture != null)
            {
                this.pictureBox1.Image = Image.FromFile(users.picture, false);
            }

        }

        //关闭窗口
        private void faceIdentify_FormClosing(object sender, FormClosingEventArgs e)
        {
            DialogResult r = MessageBox.Show("确定要退出程序?", "操作提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
            if (r != DialogResult.OK)
            {

                e.Cancel = true;
            }
            videoSourcePlayer1.Stop();//停止摄像头
            videoSourcePlayer1.Dispose();
        }

        /// <summary>
        /// 人脸识别
        /// </summary>
        /// <param name="filename"></param>
        public static Users FaceIdentifys(string filename)
        {
            long id = 0;
            string ids = "";
            double scores_num = 0;
            Users user = new Users();
            var client = new Baidu.Aip.Face.Face(Api_Key, Secret_Key);
            var image1 = File.ReadAllBytes(filename);
            var result = client.User.Identify(image1, new[] { "gr_test" }, 1, 1);
            //先判断脸是不是在上面，在继续看有匹配的没，否则提示放上脸
            //得到根节点
            JObject jo_result = (JObject)JsonConvert.DeserializeObject(result.ToString());
            if ((string)jo_result["error_msg"] != null)
            {
                MessageBox.Show("对不起，请把脸放上！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Stop);
            }
            else
            {
                //检测到脸
                //得到result节点
                JArray jo_age = (JArray)JsonConvert.DeserializeObject(jo_result["result"].ToString());
                foreach (var val in jo_age)
                {
                    id = long.Parse(((JObject)val)["uid"].ToString());  //获取uid
                    string scores = ((JObject)val)["scores"].ToString();//获取scores
                    int num1 = scores.IndexOf("
") + 2;
                    int num2 = scores.LastIndexOf("]")-8;
                    ids = scores.Substring(num1, num2);
                    scores_num =double.Parse(ids);
                }
                if (scores_num > 80)
                {
                    user = QueryUsersById(id);
                    if (user.id != 0)
                    {
                        MessageBox.Show("签到成功，已检测到您的信息", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    }
                    else
                    {
                        MessageBox.Show("对不起，系统根据您的脸未检测到信息", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Stop);
                    }
                }
                else {
                    MessageBox.Show("对不起，系统根据您的脸未检测到信息", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Stop);
                }

            }
            return user;

        }

        /// <summary>
        /// 保存图片
        /// </summary>
        public string SavePicture()
        {
            if (videoSource == null)
            {
                return null;
            }

            Bitmap bitmap = videoSourcePlayer1.GetCurrentVideoFrame();
            //图片名称，年月日时分秒毫秒.jpg
            string fileName = DateTime.Now.ToString("yyyyMMddHHmmssff") + ".jpg";

            //获取项目的根目录
            string path = AppDomain.CurrentDomain.BaseDirectory;
            string picture = path + "\picture\" + fileName;
            //将图片保存在服务器里面
            bitmap.Save(picture, ImageFormat.Jpeg);
            bitmap.Dispose();
            return picture;
        }

        /// <summary>
        /// 根据编号查询用户信息
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public static Users QueryUsersById(long id)
        {

            Users user = new Users();
            string sql = "select * from users where id = @id";
            using (SqlDataReader reader = SqlHelper.ExcuteReader(sql, CommandType.Text, new SqlParameter("@id", id)))
            {
                if (reader.Read())
                {
                    user.id = long.Parse(reader[0].ToString());
                    user.name = reader[1].ToString();
                    user.age = Convert.ToInt32(reader[2]);
                    user.phone = reader[3].ToString();
                    user.password = reader[4].ToString();
                    user.address = reader[5].ToString();
                    user.picture = reader[6].ToString();
                }
            }
            return user;
        }

        //取消的按钮
        private void close_Click(object sender, EventArgs e)
        {
            //停止摄像头
            videoSourcePlayer1.Stop();
            this.Close();
            welcome we = new welcome();
            we.Show();
        }




    }
}