C#项目实战｜人脸识别考勤

• • 一、实现流程
  • • 1.1、创建项目
    • 1.2、设计页面
    • 1.3、创建应用
    • 1.4、获取Token及参数解析
    • 1.5、与人脸数据比对并展示

一、实现流程

1.1、创建项目

1.2、设计页面

private void Form1_Load(object sender, EventArgs e)
{
    this.timer1.Start();
}
private void timer1_Tick_1(object sender, EventArgs e)
{
    this.label1.Text = System.DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
}

private void btnBase_Click(object sender, EventArgs e)
{
     if (openFileDialog1.ShowDialog() == DialogResult.OK)
     {
         Image fromImage = Image.FromFile(this.openFileDialog1.FileName);
         baseFileName = this.openFileDialog1.FileName;
         fromImage = fromImage.AdjImageToFitSize(pbMatch.Width, pbMatch.Height); //350  l;
         this.pbBase.Image = fromImage;
         string[] names = baseFileName.Split('\\');
         baseShortName = names[names.Length - 1];
         baseBM = Resize(baseFileName, tempFilePath + "base_" + baseShortName);
     }
 }

 GraphicsPath gp = new GraphicsPath();
 gp.AddEllipse(pictureBox1.ClientRectangle);
 Region region = new Region(gp);
 pictureBox1.Region = region;//赋值
 gp.Dispose();//释放资源
 region.Dispose();//释放资源

1.3、创建应用

1.4、获取Token及参数解析

        /// <summary>
        /// 模拟Get请求
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public static string HttpGet(string url)
        {
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
            request.Method = "GET";
            request.ContentType = "application/json";
            request.Accept = "*/*";
            request.Timeout = 15000;
            request.AllowAutoRedirect = false;
            WebResponse response = null;
            string responseStr = null;
            try
            {
                response = request.GetResponse();
                if (response != null)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                    responseStr = reader.ReadToEnd();
                    reader.Close();
                }
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                request = null;
                response = null;
            }
            return responseStr;
        }

        /// <summary>
        /// 解析Token帮助类
        /// </summary>
        public class TokenClass { 
            public string refresh_token { get; set; }
            public string session_key { get; set; }
            public string scope { get; set; }
            public string session_secret { get; set; }

            /// <summary>
            /// Access Token的有效期(秒为单位，有效期30天)；
            /// </summary>
            public int expires_in { get; set; }

            /// <summary>
            /// 获取的Access Token
            /// </summary>
            public string access_token { get; set; }
        }

        /// <summary>
        /// 获取token
        /// </summary>
        /// <returns></returns>
        public static TokenClass GetToken(string client_id,string client_secret) {
            var grant_type = "client_credentials";
            //拼接参数到地址
            string tokenUrl = "https://aip.baidubce.com/oauth/2.0/token?grant_type=" + grant_type + "&client_id=" + client_id + "&client_secret=" + client_secret;
            string resultStr = RequestHelper.HttpGet(tokenUrl);
            if (string.IsNullOrWhiteSpace(resultStr))
            {
                //返回false
            }
            TokenClass info = Newtonsoft.Json.JsonConvert.DeserializeObject<TokenClass>(resultStr);
            return info;
        }

        public ActionResult Index()
        {
            ViewBag.Title = "Home Page";
            TokenClass info = GetToken("你申请的应用Key", "你申请的应用的Sercet");
            return View();
        }

1.5、与人脸数据比对并展示

        /// <summary>
        /// 人脸识别返回参数帮助类
        /// </summary>
        public class FaceClass { 
            public int error_code { get; set; }
            public string error_msg { get; set; }
            public Int64 log_id { get; set; }
            public int timestamp { get; set; }
            public int cached { get; set; }
            public scoreInfo result { get; set; }
        }
        public class scoreInfo
        { 
            /// <summary>
            /// 分数
            /// </summary>
            public decimal score { get; set; }
            public List<face> face_list { get; set; }
        }
        public class face {
            public string face_token { get; set; }
        }