C#操作Aforge摄像头 实现拍照、录像功能
2024-05-13 15:25:47
准备
添加引用
http://download.csdn.net/download/u011463646/10021001
.NET 2.0以上 你给项目添加.NET引用 找到PresentationCore添加上就可以了.
设计界面
运行
【代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing.Imaging;
using System.Text;
using System.Windows;
using System.Windows.Forms;//添加的
using System.IO;
using System.Windows.Media.Imaging;
using AForge;
using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;
using Size = System.Drawing.Size;namespace AforgeCameraOne
{public partial class Form1 : Form{private FilterInfoCollection videoDevices;private VideoCaptureDevice videoSource;public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){try{// 枚举所有视频输入设备videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);if (videoDevices.Count == 0)throw new ApplicationException();foreach (FilterInfo device in videoDevices){int i = 1;tscbxCameras.Items.Add(device.Name);textBoxC.AppendText("摄像头" + i + "初始化完毕..." + "\n");textBoxC.ScrollToCaret();i++;}tscbxCameras.SelectedIndex = 0;}catch (ApplicationException){tscbxCameras.Items.Add("No local capture devices");videoDevices = null;}}private void btnConnect_Click(object sender, EventArgs e){CameraConn();}//连接摄像头1private void CameraConn(){VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[tscbxCameras.SelectedIndex].MonikerString);videoSource.DesiredFrameSize = new System.Drawing.Size(320, 240);videoSource.DesiredFrameRate = 1;videoSourcePlayer.VideoSource = videoSource;videoSourcePlayer.Start();}private void btnClose_Click(object sender, EventArgs e){videoSourcePlayer.SignalToStop();videoSourcePlayer.WaitForStop();}//主窗体关闭private void Form1_FormClosing(object sender, FormClosingEventArgs e){btnClose_Click(null, null);}private void Photograph_Click(object sender, EventArgs e){try{if (videoSourcePlayer.IsRunning){//System.Windows.Media.ImagingBitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(videoSourcePlayer.GetCurrentVideoFrame().GetHbitmap(),IntPtr.Zero,Int32Rect.Empty,//System.Drawing.Imaging;BitmapSizeOptions.FromEmptyOptions());PngBitmapEncoder pE = new PngBitmapEncoder();pE.Frames.Add(BitmapFrame.Create(bitmapSource));string picName = GetImagePath() + "\\" + "xiaosy" + ".jpg";textBoxC.AppendText("保存路径：" + picName + "\n");textBoxC.ScrollToCaret();if (File.Exists(picName)){File.Delete(picName);}using (Stream stream = File.Create(picName)){pE.Save(stream);}}}catch (Exception ex){MessageBox.Show("摄像头异常：" + ex.Message);}}private string GetImagePath(){string personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)+ Path.DirectorySeparatorChar.ToString() + "PersonImg";if (!Directory.Exists(personImgPath)){Directory.CreateDirectory(personImgPath);}return personImgPath;}private void btnExit_Click(object sender, EventArgs e){//拍照完成后关摄像头并刷新,同时关窗体if (videoSourcePlayer != null && videoSourcePlayer.IsRunning){videoSourcePlayer.SignalToStop();videoSourcePlayer.WaitForStop();}this.Close();}}
}
优点
videoSourcePlayer框的大小能够完整显示图像，比AForge Video好多了。
进一步改善，添加连续拍照功能
实时保存图像：
连续拍照AforgeCameraOne代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing.Imaging;
using System.Text;
using System.Windows;
using System.Windows.Forms;//添加的
using System.IO;
using System.Windows.Media.Imaging;
using AForge;
using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;
using AForge.Video.FFMPEG;
using Size = System.Drawing.Size;namespace AforgeCameraOne
{public partial class Form1 : Form{private delegate void MyDelegateUI();//多线程问题private FilterInfoCollection videoDevices; //摄像头设备 private VideoCaptureDevice videoSource; //视频的来源选择 private VideoSourcePlayer videoSourcePlayer; //AForge控制控件 private VideoFileWriter videoWriter; //写入到视频 private bool is_record_video = false; //是否开始录像 private bool is_multiPhotograph = false; //是否连续拍照 System.Timers.Timer timer_count;int tick_num = 0;public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){try{// 枚举所有视频输入设备videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);if (videoDevices.Count == 0)throw new ApplicationException();foreach (FilterInfo device in videoDevices){int i = 1;tscbxCameras.Items.Add(device.Name);textBoxC.AppendText("摄像头" + i + "初始化完毕..." + "\n");textBoxC.ScrollToCaret();i++;}tscbxCameras.SelectedIndex = 0;}catch (ApplicationException){tscbxCameras.Items.Add("No local capture devices");videoDevices = null;}}private void btnConnect_Click(object sender, EventArgs e){CameraConn();}//连接摄像头1private void CameraConn(){VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[tscbxCameras.SelectedIndex].MonikerString);videoSource.DesiredFrameSize = new System.Drawing.Size(640, 480);//不起作用videoSource.DesiredFrameRate = 1;videoSourcePlayer.VideoSource = videoSource;videoSource.NewFrame += new NewFrameEventHandler(videoSource_NewFrame);videoSourcePlayer.Start();}private void btnClose_Click(object sender, EventArgs e){videoSourcePlayer.SignalToStop();videoSourcePlayer.WaitForStop();}//主窗体关闭private void Form1_FormClosing(object sender, FormClosingEventArgs e){btnClose_Click(null, null);}//拍一次照片private void btnPhotograph_Click(object sender, EventArgs e){try{if (videoSourcePlayer.IsRunning){//System.Windows.Media.ImagingBitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(videoSourcePlayer.GetCurrentVideoFrame().GetHbitmap(),IntPtr.Zero,Int32Rect.Empty,//System.Drawing.Imaging;BitmapSizeOptions.FromEmptyOptions());PngBitmapEncoder pE = new PngBitmapEncoder();pE.Frames.Add(BitmapFrame.Create(bitmapSource));string picName = GetImagePath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss") + ".jpg";textBoxC.AppendText("保存路径：" + picName + "\n");textBoxC.ScrollToCaret();if (File.Exists(picName)){File.Delete(picName);}using (Stream stream = File.Create(picName)){pE.Save(stream);}}}catch (Exception ex){MessageBox.Show("摄像头异常：" + ex.Message);}}//拍多次照片private void btnMultiPhotograph_Click(object sender, EventArgs e){try{if (videoSourcePlayer.IsRunning && btnMultiPhotograph.Text.Trim()=="连续拍照"){//抓到图保存到指定路径//System.Drawing.Bitmap bmp1 = null;//bmp1 = videoSourcePlayer.GetCurrentVideoFrame();is_multiPhotograph = true;btnMultiPhotograph.Text = "终止拍照";return;//这句重要}if (videoSourcePlayer.IsRunning && btnMultiPhotograph.Text.Trim() == "终止拍照"){is_multiPhotograph = false;btnMultiPhotograph.Text = "连续拍照";}}catch (Exception ex){MessageBox.Show("摄像头异常：" + ex.Message);}}void videoSource_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs){if (is_multiPhotograph){System.Drawing.Bitmap bmp1 = (System.Drawing.Bitmap)eventArgs.Frame.Clone();string picName = GetImagePath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss") + ".jpg";MyDelegateUI d = delegate{this.textBoxC.AppendText("保存路径：" + picName + "\n");textBoxC.ScrollToCaret();};this.textBoxC.Invoke(d);if (File.Exists(picName)){File.Delete(picName);}using (Stream stream = File.Create(picName)){bmp1.Save(stream, ImageFormat.Bmp);}}}//获得路径private string GetImagePath(){string personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)+ Path.DirectorySeparatorChar.ToString() + "PersonImg";if (!Directory.Exists(personImgPath)){Directory.CreateDirectory(personImgPath);}return personImgPath;}//退出按钮private void btnExit_Click(object sender, EventArgs e){//拍照完成后关摄像头并刷新,同时关窗体if (videoSourcePlayer != null && videoSourcePlayer.IsRunning){videoSourcePlayer.SignalToStop();videoSourcePlayer.WaitForStop();}this.Close();}}
}
终极完善，添加Video的录制功能
这次优化了界面初始化的按钮状态，以及随时录制视频的功能。并在Video上打印文字如时间等等。环境配置与AForge Video同。
出现问题：
拍照+录像代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing.Imaging;
using System.Text;
using System.Windows;
using System.Windows.Forms;//添加的
using System.IO;
using System.Windows.Media.Imaging;
using AForge;
using AForge.Controls;
using AForge.Video;
using AForge.Video.DirectShow;
using AForge.Video.FFMPEG;
using Size = System.Drawing.Size;namespace AforgeCameraOne
{public partial class Form1 : Form{private delegate void MyDelegateUI();//多线程问题private FilterInfoCollection videoDevices; //摄像头设备 private VideoCaptureDevice videoSource; //视频的来源选择 private VideoSourcePlayer videoSourcePlayer; //AForge控制控件 private VideoFileWriter videoWriter=null; //写入到视频 private bool is_record_video = false; //是否开始录像 private bool is_multiPhotograph = false; //是否连续拍照 System.Drawing.Bitmap bmp1 = null;System.Timers.Timer timer_count;int tick_num = 0;int hour = 0;int i = 1; //统计摄像头个数int width = 640; //录制视频的宽度int height = 480; //录制视频的高度int fps = 20; //正常速率，fps越大速率越快，相当于快进public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){//初始化按钮状态btnClose.Enabled = false;btnPhotograph.Enabled = false;btnMultiPhotograph.Enabled = false;btnStarVideo.Enabled = false;btnPuaseVideo.Enabled = false;btnStopVideo.Enabled = false;try{// 枚举所有视频输入设备videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);if (videoDevices.Count == 0)throw new ApplicationException();foreach (FilterInfo device in videoDevices){tscbxCameras.Items.Add(device.Name);textBoxC.AppendText("摄像头" + i + "初始化完毕..." + "\n");textBoxC.ScrollToCaret();i++;}tscbxCameras.SelectedIndex = 0;}catch (ApplicationException){tscbxCameras.Items.Add("No local capture devices");videoDevices = null;}//秒表timer_count = new System.Timers.Timer(); //实例化Timer类，设置间隔时间为1000毫秒；timer_count.Elapsed += new System.Timers.ElapsedEventHandler(tick_count); //到达时间的时候执行事件；timer_count.AutoReset = true; //设置是执行一次（false）还是一直执行(true)；timer_count.Interval = 1000;}//计时器响应函数public void tick_count(object source, System.Timers.ElapsedEventArgs e){tick_num++;int temp = tick_num;int sec = temp % 60;int min = temp / 60;if (min % 60 == 0){hour = min / 60;min = 0;}else{min = min - hour * 60;}String tick = hour.ToString() + "：" + min.ToString() + "：" + sec.ToString();MyDelegateUI d = delegate{this.labelTime.Text = tick;};this.labelTime.Invoke(d);}private void btnConnect_Click(object sender, EventArgs e){CameraConn();//激活初始化按钮状态btnClose.Enabled = true;btnPhotograph.Enabled = true;btnMultiPhotograph.Enabled = true;btnStarVideo.Enabled = true;btnPuaseVideo.Enabled = true;btnStopVideo.Enabled = true;}//连接摄像头1private void CameraConn(){VideoCaptureDevice videoSource = new VideoCaptureDevice(videoDevices[tscbxCameras.SelectedIndex].MonikerString);videoSource.DesiredFrameSize = new System.Drawing.Size(640, 480);//不起作用videoSource.DesiredFrameRate = 1;videoSourcePlayer.VideoSource = videoSource;videoSource.NewFrame += new NewFrameEventHandler(videoSource_NewFrame);videoSourcePlayer.Start();}private void btnClose_Click(object sender, EventArgs e){videoSourcePlayer.SignalToStop();videoSourcePlayer.WaitForStop();}//主窗体关闭private void Form1_FormClosing(object sender, FormClosingEventArgs e){btnClose_Click(null, null);}//拍一次照片private void btnPhotograph_Click(object sender, EventArgs e){try{if (videoSourcePlayer.IsRunning){//System.Windows.Media.ImagingBitmapSource bitmapSource = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(videoSourcePlayer.GetCurrentVideoFrame().GetHbitmap(),IntPtr.Zero,Int32Rect.Empty,//System.Drawing.Imaging;BitmapSizeOptions.FromEmptyOptions());PngBitmapEncoder pE = new PngBitmapEncoder();pE.Frames.Add(BitmapFrame.Create(bitmapSource));string picName = GetImagePath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss") + ".jpg";textBoxC.AppendText("保存路径：" + picName + "\n");textBoxC.ScrollToCaret();if (File.Exists(picName)){File.Delete(picName);}using (Stream stream = File.Create(picName)){pE.Save(stream);}}}catch (Exception ex){MessageBox.Show("摄像头异常：" + ex.Message);}}//拍多次照片private void btnMultiPhotograph_Click(object sender, EventArgs e){try{if (videoSourcePlayer.IsRunning && btnMultiPhotograph.Text.Trim()=="连续拍照"){//抓到图保存到指定路径//System.Drawing.Bitmap bmp1 = null;//bmp1 = videoSourcePlayer.GetCurrentVideoFrame();is_multiPhotograph = true;btnMultiPhotograph.Text = "终止拍照";return;//这句重要}if (videoSourcePlayer.IsRunning && btnMultiPhotograph.Text.Trim() == "终止拍照"){is_multiPhotograph = false;btnMultiPhotograph.Text = "连续拍照";}}catch (Exception ex){MessageBox.Show("摄像头异常：" + ex.Message);}}void videoSource_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs){bmp1 = (System.Drawing.Bitmap)eventArgs.Frame.Clone();//Write Imagesif (is_multiPhotograph){string picName = GetImagePath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss-ffff") + ".jpg";MyDelegateUI d = delegate{this.textBoxC.AppendText("保存路径：" + picName + "\n");textBoxC.ScrollToCaret();};this.textBoxC.Invoke(d);if (File.Exists(picName)){File.Delete(picName);}using (Stream stream = File.Create(picName)){bmp1.Save(stream, ImageFormat.Bmp);}}//Write Videosif (is_record_video){bmp1 = videoSourcePlayer.GetCurrentVideoFrame();videoWriter.WriteVideoFrame(bmp1);}}//获得Images路径private string GetImagePath(){string personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)+ Path.DirectorySeparatorChar.ToString() + "PersonImg";if (!Directory.Exists(personImgPath)){Directory.CreateDirectory(personImgPath);}return personImgPath;}//获取Video相对路径private String GetVideoPath(){String personImgPath = Path.GetDirectoryName(AppDomain.CurrentDomain.BaseDirectory)+ Path.DirectorySeparatorChar.ToString() + "MyVideo";if (!Directory.Exists(personImgPath)){Directory.CreateDirectory(personImgPath);}return personImgPath;}//退出按钮private void btnExit_Click(object sender, EventArgs e){if (this.videoWriter == null){//MessageBox.Show("videoWriter对象未实例化。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);//return;videoWriter = new VideoFileWriter();}if (this.videoWriter.IsOpen){MessageBox.Show("视频流还没有写完，请点击结束录制。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);return;}//拍照完成后关摄像头并刷新,同时关窗体if (videoSourcePlayer != null && videoSourcePlayer.IsRunning){videoSourcePlayer.SignalToStop();videoSourcePlayer.WaitForStop();}this.Close();}//开始录像private void btnStarVideo_Click(object sender, EventArgs e){try{//创建一个视频文件String picName = GetVideoPath() + "\\" + DateTime.Now.ToString("yyyyMMdd HH-mm-ss") + ".avi";textBoxC.AppendText("Video保存地址：" + picName + "\n");textBoxC.ScrollToCaret();timer_count.Enabled = true;//是否执行System.Timers.Timer.Elapsed事件；textBoxC.AppendText("录制中...\n");is_record_video = true;videoWriter = new VideoFileWriter();if (videoSourcePlayer.IsRunning){videoWriter.Open(picName, width, height, fps, VideoCodec.MPEG4);}else{MessageBox.Show("没有视频源输入，无法录制视频。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);}}catch (Exception ex){MessageBox.Show("摄像头异常：" + ex.Message);}}//暂停录像private void btnPuaseVideo_Click(object sender, EventArgs e){if (this.btnPuaseVideo.Text.Trim() == "暂停录像"){is_record_video = false;this.btnPuaseVideo.Text = "恢复录像";timer_count.Enabled = false; //暂停计时return;}if (this.btnPuaseVideo.Text.Trim() == "恢复录像"){is_record_video = true;this.btnPuaseVideo.Text = "暂停录像";timer_count.Enabled = true; //恢复计时}}private void btnStopVideo_Click(object sender, EventArgs e){this.is_record_video = false;this.videoWriter.Close();this.timer_count.Enabled = false;tick_num = 0;textBoxC.AppendText("录制停止!\n");textBoxC.ScrollToCaret();}}
}
参考
【1】C#操作摄像头 实现拍照功能 - 迷失的醉猫 - 博客园
http://www.cnblogs.com/xsyblogs/p/3551986.html
【2】C# 调用AForge类库操作摄像头 - CSDN博客
http://blog.csdn.net/chenhongwu666/article/details/40594365
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