准备工作
引入华为云人脸识别模块SDK
在项目中引入 Aforge
- 选择项目右键>管理NuGet程序包>搜索Aforge>安装下面六个组件
>AForge
>AForge.Imaging
>AForge.Math
>AForge.Video
>AForge.Video.DirectShow
>AForge.Video.Control
引入 Aforge
在项目中引入 Newtonsoft.Json
-
选择项目右键>管理NuGet程序包>搜索Newtonsoft.Json>安装Newtonsoft.Json
引入 Newtonsoft.Json
前期准备工作完成，开工
1. 窗体设计
人脸检测窗体设计
| 控件类型 |
控件名称 |
控件描述 |
| VideoSourcePlayer |
vispShoot |
视频控件，用于显示摄像头拍摄信息 |
| Button |
btnDetect |
拍照检测按钮 |
| Button |
btnStart |
开始自动检测按钮 |
| Button |
btnDetect |
结束自动检测按钮 |
| Timer |
timeShoot |
自动检测定时器，用于定时拍照检测 |
| PictureBox |
pbFaceImage |
拍照图片展示图形框，用于展示拍照得到的图像 |
| TextBox |
TextBox |
文本框，用于展示人脸检测结果 |
namespace huaweiCloudDemo
{
partial class 人脸检测
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要修改
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.vispShoot = new AForge.Controls.VideoSourcePlayer();
this.btnDetect = new System.Windows.Forms.Button();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.label2 = new System.Windows.Forms.Label();
this.label1 = new System.Windows.Forms.Label();
this.pbFaceImage = new System.Windows.Forms.PictureBox();
this.lblResult = new System.Windows.Forms.Label();
this.btnStart = new System.Windows.Forms.Button();
this.btnStop = new System.Windows.Forms.Button();
this.timeShoot = new System.Windows.Forms.Timer(this.components);
this.txtResult = new System.Windows.Forms.TextBox();
this.groupBox1.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.pbFaceImage)).BeginInit();
this.SuspendLayout();
//
// vispShoot
//
this.vispShoot.Location = new System.Drawing.Point(64, 37);
this.vispShoot.Name = "vispShoot";
this.vispShoot.Size = new System.Drawing.Size(527, 447);
this.vispShoot.TabIndex = 0;
this.vispShoot.Text = "videoSourcePlayer1";
this.vispShoot.VideoSource = null;
//
// btnDetect
//
this.btnDetect.Font = new System.Drawing.Font("宋体", 14F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.btnDetect.Location = new System.Drawing.Point(234, 523);
this.btnDetect.Name = "btnDetect";
this.btnDetect.Size = new System.Drawing.Size(184, 63);
this.btnDetect.TabIndex = 1;
this.btnDetect.Text = "拍照检测";
this.btnDetect.UseVisualStyleBackColor = true;
this.btnDetect.Click += new System.EventHandler(this.btnCheck_Click);
//
// groupBox1
//
this.groupBox1.Controls.Add(this.txtResult);
this.groupBox1.Controls.Add(this.lblResult);
this.groupBox1.Controls.Add(this.label2);
this.groupBox1.Controls.Add(this.label1);
this.groupBox1.Controls.Add(this.pbFaceImage);
this.groupBox1.Font = new System.Drawing.Font("宋体", 15F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.groupBox1.Location = new System.Drawing.Point(666, 37);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(554, 809);
this.groupBox1.TabIndex = 2;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "检测结果";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label2.Location = new System.Drawing.Point(25, 327);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(130, 24);
this.label2.TabIndex = 2;
this.label2.Text = "检测结果：";
//
// label1
//
this.label1.AutoSize = true;
this.label1.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.label1.Location = new System.Drawing.Point(25, 156);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(130, 24);
this.label1.TabIndex = 1;
this.label1.Text = "检测图片：";
//
// pbFaceImage
//
this.pbFaceImage.Location = new System.Drawing.Point(161, 41);
this.pbFaceImage.Name = "pbFaceImage";
this.pbFaceImage.Size = new System.Drawing.Size(356, 273);
this.pbFaceImage.SizeMode = System.Windows.Forms.PictureBoxSizeMode.Zoom;
this.pbFaceImage.TabIndex = 0;
this.pbFaceImage.TabStop = false;
//
// lblResult
//
this.lblResult.AutoSize = true;
this.lblResult.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.lblResult.Location = new System.Drawing.Point(49, 391);
this.lblResult.Name = "lblResult";
this.lblResult.Size = new System.Drawing.Size(0, 24);
this.lblResult.TabIndex = 5;
//
// btnStart
//
this.btnStart.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.btnStart.Location = new System.Drawing.Point(64, 627);
this.btnStart.Name = "btnStart";
this.btnStart.Size = new System.Drawing.Size(184, 63);
this.btnStart.TabIndex = 3;
this.btnStart.Text = "开始自动检测";
this.btnStart.UseVisualStyleBackColor = true;
this.btnStart.Click += new System.EventHandler(this.btnStart_Click);
//
// btnStop
//
this.btnStop.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.btnStop.Location = new System.Drawing.Point(407, 627);
this.btnStop.Name = "btnStop";
this.btnStop.Size = new System.Drawing.Size(184, 63);
this.btnStop.TabIndex = 4;
this.btnStop.Text = "结束自动检测";
this.btnStop.UseVisualStyleBackColor = true;
this.btnStop.Click += new System.EventHandler(this.btnStop_Click);
//
// timeShoot
//
this.timeShoot.Interval = 1000;
this.timeShoot.Tick += new System.EventHandler(this.timeShoot_Tick);
//
// txtResult
//
this.txtResult.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
this.txtResult.Location = new System.Drawing.Point(29, 381);
this.txtResult.Multiline = true;
this.txtResult.Name = "txtResult";
this.txtResult.ScrollBars = System.Windows.Forms.ScrollBars.Both;
this.txtResult.Size = new System.Drawing.Size(488, 396);
this.txtResult.TabIndex = 6;
//
// 人脸检测
//
this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 18F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(1273, 885);
this.Controls.Add(this.btnStop);
this.Controls.Add(this.btnStart);
this.Controls.Add(this.groupBox1);
this.Controls.Add(this.btnDetect);
this.Controls.Add(this.vispShoot);
this.Name = "人脸检测";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "人脸检测";
this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.人脸检测_FormClosing);
this.Load += new System.EventHandler(this.人脸检测_Load);
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
((System.ComponentModel.ISupportInitialize)(this.pbFaceImage)).EndInit();
this.ResumeLayout(false);
}
#endregion
private AForge.Controls.VideoSourcePlayer vispShoot;
private System.Windows.Forms.Button btnDetect;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.PictureBox pbFaceImage;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label lblResult;
private System.Windows.Forms.Button btnStart;
private System.Windows.Forms.Button btnStop;
private System.Windows.Forms.Timer timeShoot;
private System.Windows.Forms.TextBox txtResult;
}
}
2. FaceUtil（华为云人脸识别SDK工具类 ）
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using AForge.Imaging;
//引入华为云SDK命名空间
using FrsSDK.client;
using FrsSDK.client.param;
using FrsSDK.client.result;
namespace huaweiCloudDemo.utils
{
/// <summary>
/// 华为云（https://support.huaweicloud.com/sdkreference-face/face_04_0018.html）
/// 人脸操作工具类
/// </summary>
class FaceUtil
{
//华为AK/SK/projectId 可在“我的凭证”界面获取（https://console.huaweicloud.com/iam/?locale=zh-cn#/myCredential）
//Access Key Id
private const string ak = "***";
//Secret Access Key
private const string sk = "***";
//项目id 可在
private const string projectId = "***";
//图片存储本地地址
private const string imageLocalUrl = "D:\\resources\\image\\faces";
/// <summary>
/// 人脸检测
/// 具体传入参数，返回参数请参考（https://support.huaweicloud.com/api-face/face_02_0052.html）
/// </summary>
/// <param name="image">图片地址（本地图片）</param>
/// /// <param name="attributes">人脸属性，默认无，多个逗号(,)隔开（0：人脸姿态，1：性别，2：年龄，3：人脸关键点，4：装束（帽子，眼镜）5：笑脸）</param>
/// <returns>检测结果（JSON格式字符串）</returns>
public static DetectFaceResult DetectFaceByFile(Bitmap image, string attributes = null)
{
AuthInfo authInfo = new AuthInfo("https://face.cn-north-1.myhuaweicloud.com", ak, sk);
FrsClient frsClient = new FrsClient(authInfo, projectId);
DetectFaceResult detectFaceResult = frsClient.GetDetectService().DetectFaceByFile(SaveImageToLoacl(image), attributes);
return detectFaceResult;
}
/// <summary>
/// 图片本地存储
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public static string SaveImageToLoacl(Bitmap image)
{
//判断图片本地存储文件夹是否存在，不存在则创建
if (!Directory.Exists(imageLocalUrl))
{
Directory.CreateDirectory(imageLocalUrl);
}
string dateStr = DateTime.Now.ToString("yyyyMMdd");
//图片文件按天生成文件夹
if (!Directory.Exists(imageLocalUrl + "\\" + dateStr))
{
Directory.CreateDirectory(imageLocalUrl + "\\" + dateStr);
}
string dateTimeStr = DateTime.Now.ToString("yyyyMMddhhmmssfff");
string imageUrl = imageLocalUrl + "\\" + dateStr + "\\" + dateTimeStr + ".jpeg";
image.Save(imageUrl, System.Drawing.Imaging.ImageFormat.Jpeg);
return imageUrl;
}
}
}
3. 窗体控件操作代码
using AForge.Video.DirectShow;
using FrsSDK.client.result;
using FrsSDK.client.result.common;
using huaweiCloudDemo.utils;
using System;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace huaweiCloudDemo
{
public partial class 人脸检测 : Form
{
public 人脸检测()
{
InitializeComponent();
}
private void btnCheck_Click(object sender, EventArgs e)
{
//拍照获得图片
Bitmap img = vispShoot.GetCurrentVideoFrame();
//展示图片
this.pbFaceImage.Image = img;
txtResult.Text = "";
DetectFaceResult result = FaceUtil.DetectFaceByFile(img,"1,2,5");
StringBuilder sb = new StringBuilder();
if (result.faces.Count > 0)
{
sb.AppendFormat("人脸数量：{0}\r\n", result.faces.Count);
for (int i = 0; i < result.faces.Count; i++)
{
DetectFace df = result.faces[i];
if (df.attributes != null)
{
sb.AppendFormat("-----第{0}张脸-----\r\n", i + 1);
sb.AppendFormat("年龄：{0}\r\n", df.attributes.age);
string gender = "";
if (df.attributes.gender == "male")
{
gender = "男";
}
else if (df.attributes.gender == "female")
{
gender = "女";
}
else
{
}
sb.AppendFormat("性别：{0}\r\n", gender);
sb.AppendFormat("笑脸：{0}\r\n", df.attributes.smile);
}
txtResult.Text = sb.ToString();
}
}
else
{
txtResult.Text = "未检测到人脸\r\n";
}
}
/// <summary>
/// 窗体加载
/// 初始化打开摄像头
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 人脸检测_Load(object sender, EventArgs e)
{
initVideo();
}
private FilterInfoCollection videoDevices;
private VideoCaptureDevice videoDevice;
private VideoCapabilities[] videoCapabilities;
/// <summary>
/// 初始化摄像头
/// </summary>
public void initVideo()
{
videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
if (videoDevices.Count != 0)
{
//foreach (FilterInfo device in videoDevices)
//{
// MessageBox.Show(device.Name);
//}
//默认取识别到的第一个摄像头
//如有需要可选择摄像头加载
videoDevice = new VideoCaptureDevice(videoDevices[0].MonikerString);
videoCapabilities = videoDevice.VideoCapabilities;
videoDevice.VideoResolution = videoCapabilities[0];
//加载到视频控件
vispShoot.VideoSource = videoDevice;
vispShoot.Start();
}
else
{
MessageBox.Show("没有找到摄像头");
}
}
/// <summary>
/// 关闭摄像头
/// </summary>
private void DisConnect()
{
if (vispShoot.VideoSource != null)
{
vispShoot.SignalToStop();
vispShoot.WaitForStop();
vispShoot.VideoSource = null;
}
}
/// <summary>
/// 窗体关闭监听事件
/// 当前窗体关闭时执行关闭摄像头方法，不然摄像头会一直开着
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void 人脸检测_FormClosing(object sender, FormClosingEventArgs e)
{
DisConnect();
}
public int stootCount = 1;
/// <summary>
/// 定时器 定时执行事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void timeShoot_Tick(object sender, EventArgs e)
{
//拍照获得图片
Bitmap img = vispShoot.GetCurrentVideoFrame();
//展示图片
this.pbFaceImage.Image = img;
DetectFaceResult result = FaceUtil.DetectFaceByFile(img, "1,2,5");
StringBuilder sb = new StringBuilder();
sb.AppendFormat("------------第（{0}）次自动检测-------------\r\n", stootCount);
if (result.faces.Count > 0)
{
sb.AppendFormat("人脸数量：{0}\r\n", result.faces.Count);
for (int i = 0; i < result.faces.Count; i++)
{
DetectFace df = result.faces[i];
if (df.attributes != null)
{
sb.AppendFormat("-----第{0}张脸-----\r\n", i + 1);
sb.AppendFormat("年龄：{0}\r\n", df.attributes.age);
string gender = "";
if (df.attributes.gender == "male")
{
gender = "男";
}
else if (df.attributes.gender == "female")
{
gender = "女";
}
else
{
gender = "无法判断";
}
sb.AppendFormat("性别：{0}\r\n", gender);
sb.AppendFormat("笑脸：{0}\r\n", df.attributes.smile);
}
}
}
else
{
sb.AppendFormat("未检测到人脸\r\n");
}
txtResult.Text += sb.ToString();
stootCount++;
}
/// <summary>
/// 开始自动检测按钮点击
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnStart_Click(object sender, EventArgs e)
{
txtResult.Text = "";
timeShoot.Start();
}
/// <summary>
/// 关闭自动检测按钮点击
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnStop_Click(object sender, EventArgs e)
{
timeShoot.Stop();
}
}
}
5. 运行效果（AI还不够聪明，年龄检测结果大了太多o(╥﹏╥)o）
运行效果o(╥﹏╥)o
6. 完整demo下载地址
解压文件
资源管理器
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