演示程序界面
源代码
FaceIdentifyForm.cs
/* ----------------------------------------------------------
* 文件名称：FaceIdentifyForm.cs
* 作者：秦建辉
*
* 微信：splashcn
*
* 博客：http://www.firstsolver.com/wordpress/
*
* 开发环境：
* Visual Studio V2017
* .NET Framework 4.5.2
* AForge.NET Framework 2.2.5
*
* 版本历史：
* V1.0 2017年09月13日
* 人证比对演示程序
------------------------------------------------------------ */
using AForge.Video.DirectShow;
using Com.FirstSolver.FR;
using Com.FirstSolver.CardReader;
using Com.FirstSolver.Splash;
using System;
using System.Drawing;
using System.IO;
using System.Threading;
using System.Windows.Forms;
namespace Splash
{
public partial class FaceIdentifyForm : Form
{
/// <summary>
/// 人脸框画笔
/// </summary>
private Pen FaceReaderPen = new Pen(Color.Red, 5.0f);
/// <summary>
/// 身份证读卡器
/// </summary>
private IDCardReader CardReader = null;
/// <summary>
/// 身份证读卡器同步事件
/// </summary>
private ManualResetEvent CardReaderSyncEvent = new ManualResetEvent(true);
/// <summary>
/// 人脸识别核心
/// </summary>
private HWFRCore FaceReader = null;
/// <summary>
/// 是否正在比对人脸
/// </summary>
private volatile bool IsCapturing = false;
/// <summary>
/// 参考图像人脸特征
/// </summary>
private byte[] ReferenceFeature;
/// <summary>
/// 人证比对通过阈值
/// </summary>
private float Threshold = 0.7f;
public FaceIdentifyForm()
{
InitializeComponent();
}
private void FaceIdentifyForm_Load(object sender, EventArgs e)
{
// 设置身份证刷卡提示
pictureBoxPhoto.BackgroundImage = Properties.Resources.CardTips;
// 初始化摄像头
InitializeCamera();
// 初始化读卡设备
InitializeCardReader();
// 初始化人证比对引擎
InitializeFaceReader();
}
// 摄像头选择改变事件处理
private void comboBoxVideoDevices_SelectedIndexChanged(object sender, EventArgs e)
{
CloseCamera();
if (comboBoxVideoDevices.SelectedIndex != -1)
{ // 开启视频
vsp.VideoSource = new VideoCaptureDevice(((FilterInfo)comboBoxVideoDevices.SelectedItem).MonikerString);
vsp.Start();
}
}
private void FaceIdentifyForm_FormClosing(object sender, FormClosingEventArgs e)
{
CloseCamera(); // 关闭摄像头
CloseCardReader(); // 关闭读卡设备
CloseFaceReader(); // 关闭人证比对引擎
FaceReaderPen.Dispose();
}
private void buttonResetCamera_Click(object sender, EventArgs e)
{
InitializeCamera();
}
// 初始化摄像头
private void InitializeCamera()
{
CloseCamera(); // 关闭摄像头
// 设定初始视频设备
comboBoxVideoDevices.DataSource = new FilterInfoCollection(FilterCategory.VideoInputDevice);
comboBoxVideoDevices.DisplayMember = "Name";
if (comboBoxVideoDevices.Items.Count > 0)
{
comboBoxVideoDevices.SelectedIndex = 0;
if (comboBoxVideoDevices.Items.Count == 1) comboBoxVideoDevices.Enabled = false;
}
else
{
MessageBoxPlus.Show(this, "未发现摄像头！", "摄像头错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
// 关闭摄像头
private void CloseCamera()
{
if (vsp.VideoSource != null && vsp.IsRunning)
{ // 停止视频
vsp.SignalToStop();
vsp.WaitForStop();
}
}
private void buttonResetCardReader_Click(object sender, EventArgs e)
{
InitializeCardReader();
}
// 初始化读卡器
private void InitializeCardReader()
{
CloseCardReader(); // 关闭读卡器
try
{
CardReader = new YAReader();
CardReader.ExternalSyncEvent = CardReaderSyncEvent; // 身份证读卡器同步信号
CardReader.OnReadCardCompleted += ReadCardCompletedHandler; // 事件处理器
if (CardReader.Start(IDCardBiometrics.Photo) == -1)
{
MessageBoxPlus.Show(this, "开启身份证扫描服务失败！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
catch (Exception exception)
{
MessageBoxPlus.Show(this, exception.Message, "读卡器错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
// 停止身份证扫描服务
private void CloseCardReader()
{
if (CardReader != null) { CardReader.Close(); CardReader = null; }
}
// 刷身份证处理器
private void ReadCardCompletedHandler(object sender, ReadCardCompletedEventArgs e)
{
if (e == null || e.Photo == null) return;
Image ExpiredBackgroundImage = pictureBoxPhoto.BackgroundImage;
using (MemoryStream ms = new MemoryStream(e.Photo))
{
pictureBoxPhoto.BackgroundImage = new Bitmap(ms);
}
if (ExpiredBackgroundImage != null) ExpiredBackgroundImage.Dispose();
}
// 选择比对照片
private void buttonSelectPhoto_Click(object sender, EventArgs e)
{
OpenFileDialog openDialog = new OpenFileDialog();
openDialog.Filter = "Image|*.bmp;*.jpg;*.jpe;*.png";
openDialog.DereferenceLinks = true;
if (openDialog.ShowDialog(this) == DialogResult.OK)
{
Image ExpiredBackgroundImage = pictureBoxPhoto.BackgroundImage;
pictureBoxPhoto.BackgroundImage = new Bitmap(openDialog.FileName, true);
if (ExpiredBackgroundImage != null) ExpiredBackgroundImage.Dispose();
}
}
// 初始化人证比对引擎
private void InitializeFaceReader()
{
try
{
FaceReader = new HWFRCore();
}
catch
{
MessageBoxPlus.Show(this, "人证比对核心加载失败！，程序退出…", "核心加载错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
this.Close();
}
}
// 关闭人证比对引擎
private void CloseFaceReader()
{
if (FaceReader != null) FaceReader.Dispose();
}
// 参考图像更换事件处理
private void pictureBoxPhoto_BackgroundImageChanged(object sender, EventArgs e)
{
pictureBoxAnswer.BackgroundImage = Properties.Resources.noimage;
textBoxScore.Clear();
if (vsp.VideoSource == null || pictureBoxPhoto.BackgroundImage == null) return;
Bitmap bmp = (Bitmap)pictureBoxPhoto.BackgroundImage;
byte[] RgbLinearArray;
byte[] GrayLinearArray = bmp.ToGrayLinearArray(out RgbLinearArray);
// 检测人脸
bool IsOK = false;
FR_TFACEINFO FaceInfo;
if (FaceReader.DetectOne(GrayLinearArray, RgbLinearArray, bmp.Width, bmp.Height, out FaceInfo) == 1)
{ // 绘制人脸框
using (Graphics g = Graphics.FromImage(bmp))
{ // 用矩形框标记脸位置
FR_TRECT Face = FaceInfo.m_FaceRect;
g.DrawRectangle(FaceReaderPen, Face.left, Face.top, Face.right - Face.left + 1, Face.bottom - Face.top + 1);
}
pictureBoxPhoto.Invalidate();
ReferenceFeature = FaceReader.ExtractFeature(GrayLinearArray, bmp.Width, bmp.Height, ref FaceInfo);
if (ReferenceFeature != null) IsOK = true;
}
if (IsOK)
{
IsCapturing = true;
}
else
{
MessageBoxPlus.Show(this, "参考图像检测不到人脸，请重新选择！", "检测人脸失败", MessageBoxButtons.OK, MessageBoxIcon.Error);
CardReaderSyncEvent.Set();
}
}
// 阈值更新事件处理
private void textBoxThreshold_TextChanged(object sender, EventArgs e)
{
if (!float.TryParse(textBoxThreshold.Text, out Threshold))
{
MessageBoxPlus.Show(this, "阈值范围为0～1.0！", "阈值设置失败", MessageBoxButtons.OK, MessageBoxIcon.Error);
textBoxThreshold.Focus();
}
}
private void vsp_NewFrame(object sender, ref Bitmap image)
{
if (!IsCapturing) return;
// 检测人脸
byte[] RgbLinearArray;
byte[] GrayLinearArray = image.ToGrayLinearArray(out RgbLinearArray);
FR_TFACEINFO FaceInfo;
if (FaceReader.DetectOne(GrayLinearArray, RgbLinearArray, image.Width, image.Height, out FaceInfo) != 1) return;
// 绘制人脸框
using (Graphics g = Graphics.FromImage(image))
{ // 用矩形框标记脸位置
FR_TRECT Face = FaceInfo.m_FaceRect;
g.DrawRectangle(FaceReaderPen, Face.left, Face.top, Face.right - Face.left + 1, Face.bottom - Face.top + 1);
}
// 提取人脸特征
byte[] SourceFeature = FaceReader.ExtractFeature(GrayLinearArray, image.Width, image.Height, ref FaceInfo);
if (SourceFeature == null) return;
// 人证比对
float fScore;
if (FaceReader.Compare(SourceFeature, ReferenceFeature, out fScore))
{
this.BeginInvoke(new Action(() => {
if (fScore >= Threshold)
{
pictureBoxAnswer.BackgroundImage = Properties.Resources.Ok;
}
else
{
pictureBoxAnswer.BackgroundImage = Properties.Resources.No;
}
textBoxScore.Text = fScore.ToString();
}));
// 等待下一次事件触发
CardReaderSyncEvent.Set();
IsCapturing = false;
}
}
}
}