// Snap
// Acquire image(s)
//
private bool Snap()
{
// Check if the transfer object is available
if (m_pXfer == null || !m_pXfer.Initialized)
{
return(false);
}
for (int iFrame = 0; iFrame < m_pLocalBuffer.Count; iFrame++)
{
// Acquire one image
m_pXfer.Snap();
// Wait until the acquired image has been transferred into system memory
AbortDlg abort = new AbortDlg(m_pXfer);
if (abort.ShowDialog() != DialogResult.OK)
{
m_pXfer.Abort();
return(false);
}
//Add a short delay to ensure the transfer callback has time to arrive
System.Threading.Thread.Sleep(100);
if (m_pLocalBuffer != null)
{
m_pLocalBuffer.Index = iFrame;
m_pLocalBuffer.Copy(m_pBuffer);
}
}
return(true);
}
private void UpdateView()
{
if (m_pColorConv.Enabled)
{
// Check if we are operating on-line
if (m_pXfer != null && m_pXfer.Initialized)
{
// Check if we are grabbing
if (m_pXfer.Grabbing)
{
// The view will be automatically updated on the next acquired frame
return;
}
// Check if we are using an hardware color decoder
if (m_pColorConv.HardwareEnabled)
{
// Acquire one frame
m_pXfer.Snap();
return;
}
}
// Else, apply color conversion to current buffer's content
if (m_pPro != null)
{
m_pPro.Execute();
}
else
{
m_pColorConv.Convert();
if (m_pImageWnd != null)
{
// Redraw the color decoded image
m_pImageWnd.Refresh();
}
}
}
}
static bool AutoWhiteBalanceOperations(SapAcqDevice Camera, SapBuffer Buffers, SapTransfer Transfer)
{
Console.WriteLine("\nCalibration in progress ...........\n\n");
double coefBlueGain = MAX_COEF + 1;
double coefGreenGain = MAX_COEF + 1;
double coefRedGain = MAX_COEF + 1;
int calibrationIteration = 0;
// Create a new Bayer object
SapBayer Bayer = new SapBayer(Buffers);
SapFeature FeatureInfo = new SapFeature(Camera.Location);
if (!FeatureInfo.Create())
{
DestroysFeaturesAndBayer(FeatureInfo, Bayer);
return(false);
}
// Create Bayer object
if (!Bayer.Create())
{
DestroysFeaturesAndBayer(FeatureInfo, Bayer);
return(false);
}
// Initialize all Gain colors to 0
Camera.SetFeatureValue("GainBlue", 0);
Camera.SetFeatureValue("GainGreen", 0);
Camera.SetFeatureValue("GainRed", 0);
// Choose alignment used
Bayer.Align = SapBayer.AlignMode.RGGB;
// Definition of ROI used for calibration
int fixSelectedRoiLeft = 0;
int fixSelectedRoiTop = 0;
// Half buffer width
int fixSelectedRoiWidth = Buffers.Width / 2;
// Half buffer height
int fixSelectedRoiHeight = Buffers.Height / 2;
// Start loop for calibration until each coefficient is under 1.05
while (coefBlueGain > MAX_COEF || coefGreenGain > MAX_COEF || coefRedGain > MAX_COEF)
{
if (!Transfer.Snap())
{
Console.WriteLine("Unable to acquire an image");
return(false);
}
Thread.Sleep(500);
// Call WhiteBalance function
if (!Bayer.WhiteBalance(Buffers, fixSelectedRoiLeft, fixSelectedRoiTop, fixSelectedRoiWidth, fixSelectedRoiHeight))
{
break;
}
// New coefficients values are reused.
coefBlueGain = Bayer.WBGain.Blue;
coefGreenGain = Bayer.WBGain.Green;
coefRedGain = Bayer.WBGain.Red;
if (coefRedGain > MAX_COEF)
{
if (!ComputeGain("GainRed", Camera, FeatureInfo, coefRedGain))
{
break;
}
}
if (coefGreenGain > MAX_COEF)
{
if (!ComputeGain("GainGreen", Camera, FeatureInfo, coefGreenGain))
{
break;
}
}
if (coefBlueGain > MAX_COEF)
{
if (!ComputeGain("GainBlue", Camera, FeatureInfo, coefBlueGain))
{
break;
}
}
if (calibrationIteration >= MAX_CALIBRATION_ITERATION)
{
Console.WriteLine("Iterations for calibration are at the maximum.\n");
break;
}
calibrationIteration++;
}
// Uncomment this part if you want to get new values after calibration.
/*
* int gainBlue=0, gainRed=0, gainGreen=0;
* Camera.GetFeatureValue("GainBlue", out gainBlue);
* Camera.GetFeatureValue("GainRed", out gainRed);
* Camera.GetFeatureValue("GainGreen", out gainGreen);
*/
DestroysFeaturesAndBayer(FeatureInfo, Bayer);
Console.WriteLine("\nCalibration finished ...........\n\n");
return(true);
}