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AForge.net 录像拍照功能实现 转
阅读原文时间：2023年07月13日阅读：1

AForge.net 使用之录像拍照功能实现
最近使用aforge.NET拍照录像功能实现

记录一下以便以后好学习，哈哈，直接上代码

连接摄像头设备，这里需要引入

AForge.Video;

AForge.Video.DirectShow;

AForge.Video.FFMPEG;

还需要添加引用，aforge.dll,aforge.control,

在工具箱中还需要添加AForge.Control，然后找到VideoSourcePlayer这个控件添加到界面上

然后定义变量

private FilterInfoCollection videoDevices;
private VideoCaptureDevice videoSource;

private bool stopREC = true;
private bool createNewFile = true;

private string videoFileFullPath = string.Empty; //视频文件全路径
private string imageFileFullPath = string.Empty; //图像文件全路径
private string videoPath = @"E:\video\"; //视频文件路径
private string imagePath = @"E:\video\images\"; //图像文件路径
private string videoFileName = string.Empty; //视频文件名
private string imageFileName = string.Empty; //图像文件名
private string drawDate = string.Empty;
private VideoFileWriter videoWriter = null;

public delegate void MyInvoke(); //定义一个委托方法

string g_s_AutoSavePath = AppDomain.CurrentDomain.BaseDirectory + "Capture\\";
object objLock = new object(); //定义一个对象的锁
int frameRate = ; //默认帧率
private Stopwatch stopWatch = null;
IVideoSource iVideoSource = null;

复制代码
private void InitUI()
{
//连接

//开启摄像头

videoDevices = vh.GetDevices();
if (videoDevices != null && videoDevices.Count > )
{
videoSource = vh.VideoConnect();
}
videoSourcePlayer1.VideoSource = videoSource;
videoSourcePlayer1.Start();
}
复制代码
开始录像

复制代码
private void btnStartVideotape_Click(object sender, EventArgs e)
{
//开始录像
if (btnStartVideotape.Text == "开始录像")
{
stopREC = false;
frameRate = Convert.ToInt32(txtFrameRate.Text.Trim());
btnStartVideotape.Text = "停止录像";
}
else if (btnStartVideotape.Text == "停止录像")
{
stopREC = true;
btnStartVideotape.Text = "开始录像";
}
}
复制代码
添加aforge.Net的一个VideoSourcePlayer控件之后找到NewFrame事件，代码如下：

下面是控件的一个事件，是真正录像的代码

复制代码
private void videoSourcePlayer1_NewFrame(object sender, ref Bitmap image)
{
//录像
Graphics g = Graphics.FromImage(image);
SolidBrush drawBrush = new SolidBrush(Color.Yellow);

        Font drawFont = new Font("Arial", , FontStyle.Bold, GraphicsUnit.Millimeter);  
        int xPos = image.Width - (image.Width - );  
        int yPos = ;  
        //写到屏幕上的时间  
        drawDate = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");

        g.DrawString(drawDate, drawFont, drawBrush, xPos, yPos);  
        if (!Directory.Exists(videoPath))  
            Directory.CreateDirectory(videoPath);

        //创建文件路径  
        //fileFullPath = path + fileName;

        if (stopREC)  
        {  
            stopREC = true;  
            createNewFile = true;  //这里要设置为true表示要创建新文件  
            if (videoWriter != null)  
                videoWriter.Close();  
        }  
        else  
        {  
            //开始录像  
            if (createNewFile)  
            {  
                videoFileName = DateTime.Now.ToString("yyyy.MM.dd HH.mm.ss") + ".avi";  
                videoFileFullPath = videoPath + videoFileName;  
                createNewFile = false;  
                if (videoWriter != null)  
                {  
                    videoWriter.Close();  
                    videoWriter.Dispose();  
                }  
                videoWriter = new VideoFileWriter();  
                //这里必须是全路径，否则会默认保存到程序运行根据录下了  
                videoWriter.Open(videoFileFullPath, image.Width, image.Height, frameRate, VideoCodec.MPEG4);  
                videoWriter.WriteVideoFrame(image);  
            }  
            else  
            {  
                videoWriter.WriteVideoFrame(image);  
            }  
        }  
    }

复制代码
拍照代码

复制代码
///

/// 手动拍照或抓图 ///
///
///
private void btnCapture_Click(object sender, EventArgs e)
{
try
{
int number=;
number++;
string fileImageName = g_s_RequestNo + "-" + number + ".bmp";
string fileCapturePath = g_s_AutoSavePath + g_s_RequestNo + "\\";
if (!Directory.Exists(fileCapturePath))
Directory.CreateDirectory(fileCapturePath);

    //抓到图保存到指定路径  
    Bitmap bmp = null;  
    bmp = videoSourcePlayer1.GetCurrentVideoFrame();  
    if (bmp == null)  
    {  
        MessageBox.Show("捕获图像失败！", "提示");  
        return;  
    }

    bmp.Save(fileCapturePath + fileImageName, ImageFormat.Bmp);

}  
catch (Exception ex)  
{  
    MessageBox.Show("捕获图像失败！" + ex.Message, "提示");  
}

}

AForge.net 使用之录像拍照功能实现

最近使用aforge.NET拍照录像功能实现

记录一下以便以后好学习，哈哈，直接上代码

连接摄像头设备，这里需要引入

AForge.Video;

AForge.Video.DirectShow;

AForge.Video.FFMPEG;

还需要添加引用，aforge.dll,aforge.control,

在工具箱中还需要添加AForge.Control，然后找到VideoSourcePlayer这个控件添加到界面上

然后定义变量

private FilterInfoCollection videoDevices;
private VideoCaptureDevice videoSource;

private bool stopREC = true;
private bool createNewFile = true;

private string videoFileFullPath = string.Empty; //视频文件全路径
private string imageFileFullPath = string.Empty; //图像文件全路径
private string videoPath = @"E:\video\"; //视频文件路径
private string imagePath = @"E:\video\images\"; //图像文件路径
private string videoFileName = string.Empty; //视频文件名
private string imageFileName = string.Empty; //图像文件名
private string drawDate = string.Empty;
private VideoFileWriter videoWriter = null;

public delegate void MyInvoke(); //定义一个委托方法

string g_s_AutoSavePath = AppDomain.CurrentDomain.BaseDirectory + "Capture\\";
object objLock = new object(); //定义一个对象的锁
int frameRate = 20; //默认帧率
private Stopwatch stopWatch = null;
IVideoSource iVideoSource = null;

private void InitUI()
{
//连接
//开启摄像头
videoDevices = vh.GetDevices();
if (videoDevices != null && videoDevices.Count > 0)
{
videoSource = vh.VideoConnect();
}
videoSourcePlayer1.VideoSource = videoSource;
videoSourcePlayer1.Start();
}

开始录像

private void btnStartVideotape_Click(object sender, EventArgs e)
{
//开始录像
if (btnStartVideotape.Text == "开始录像")
{
stopREC = false;
frameRate = Convert.ToInt32(txtFrameRate.Text.Trim());
btnStartVideotape.Text = "停止录像";
}
else if (btnStartVideotape.Text == "停止录像")
{
stopREC = true;
btnStartVideotape.Text = "开始录像";
}
}

添加aforge.Net的一个VideoSourcePlayer控件之后找到NewFrame事件，代码如下：

下面是控件的一个事件，是真正录像的代码

private void videoSourcePlayer1_NewFrame(object sender, ref Bitmap image)
{
//录像
Graphics g = Graphics.FromImage(image);
SolidBrush drawBrush = new SolidBrush(Color.Yellow);

        Font drawFont = new Font("Arial", 6, FontStyle.Bold, GraphicsUnit.Millimeter);  
        int xPos = image.Width - (image.Width - 15);  
        int yPos = 10;  
        //写到屏幕上的时间  
        drawDate = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");

        g.DrawString(drawDate, drawFont, drawBrush, xPos, yPos);  
        if (!Directory.Exists(videoPath))  
            Directory.CreateDirectory(videoPath);

        //创建文件路径  
        //fileFullPath = path + fileName;

        if (stopREC)  
        {  
            stopREC = true;  
            createNewFile = true;  //这里要设置为true表示要创建新文件  
            if (videoWriter != null)  
                videoWriter.Close();  
        }  
        else  
        {  
            //开始录像  
            if (createNewFile)  
            {  
                videoFileName = DateTime.Now.ToString("yyyy.MM.dd HH.mm.ss") + ".avi";  
                videoFileFullPath = videoPath + videoFileName;  
                createNewFile = false;  
                if (videoWriter != null)  
                {  
                    videoWriter.Close();  
                    videoWriter.Dispose();  
                }  
                videoWriter = new VideoFileWriter();  
                //这里必须是全路径，否则会默认保存到程序运行根据录下了  
                videoWriter.Open(videoFileFullPath, image.Width, image.Height, frameRate, VideoCodec.MPEG4);  
                videoWriter.WriteVideoFrame(image);  
            }  
            else  
            {  
                videoWriter.WriteVideoFrame(image);  
            }  
        }  
    }

拍照代码

///

/// 手动拍照或抓图 ///
///
///
private void btnCapture_Click(object sender, EventArgs e)
{
try
{
int number=0;
number++;
string fileImageName = g_s_RequestNo + "-" + number + ".bmp";
string fileCapturePath = g_s_AutoSavePath + g_s_RequestNo + "\\";
if (!Directory.Exists(fileCapturePath))
Directory.CreateDirectory(fileCapturePath);

    //抓到图保存到指定路径  
    Bitmap bmp = null;  
    bmp = videoSourcePlayer1.GetCurrentVideoFrame();  
    if (bmp == null)  
    {  
        MessageBox.Show("捕获图像失败！", "提示");  
        return;  
    }

    bmp.Save(fileCapturePath + fileImageName, ImageFormat.Bmp);

}  
catch (Exception ex)  
{  
    MessageBox.Show("捕获图像失败！" + ex.Message, "提示");  
}

}

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