private void LocateStarsWithStarRecognition(IAstroImage astroImage)
{
EnsureComputedRefinedData();
if (m_MinLocateDistance > 8)
{
if (!LightCurveReductionContext.Instance.WindOrShaking)
{
//TODO: If the wind flag is not set, then use a 3 frame binned integration to locate the stars on
}
uint[,] pixels = astroImage.GetPixelsCopy();
List <PotentialStarStruct> peakPixels = new List <PotentialStarStruct>();
AutoDiscoveredStars.Clear();
AutoDiscoveredStars = StarFinder.GetStarsInArea(
ref pixels, astroImage.BitPix, astroImage.MaxSignalValue, TangraConfig.PreProcessingFilter.NoFilter, peakPixels, null,
(uint)Math.Round(TangraConfig.Settings.Special.LostTrackingMinSignalCoeff * m_MinLocateSignal),
TangraConfig.Settings.Special.LostTrackingMinDistance, false,
LightCurveReductionContext.Instance.OSDFrame, ReducePeakPixels);
Stopwatch sw = new Stopwatch();
sw.Start();
if (m_LocateObjects.Count == 1 &&
AutoDiscoveredStars.Count == 1)
{
LocateSingleStarsWithStarRecognition(AutoDiscoveredStars, astroImage);
}
else if (
m_LocateObjects.Count == 2 &&
peakPixels.Count > 1)
{
LocateTwoStarsWithStarRecognition(peakPixels, astroImage, pixels);
}
else if (
m_LocateObjects.Count > 2 &&
peakPixels.Count > 1)
{
List <TrackedObject> goodTrackedObjects = TrackedObjects.Cast <TrackedObject>().ToList().FindAll(t => t.LastKnownGoodPosition != null);
if (goodTrackedObjects.Count < 2)
{
// We don't have at least one good pair. Fail.
}
else if (goodTrackedObjects.Count >= 2)
{
goodTrackedObjects.Sort((a, b) =>
Math.Min(b.LastKnownGoodPosition.XDouble, b.LastKnownGoodPosition.YDouble).CompareTo(
Math.Min(a.LastKnownGoodPosition.XDouble, a.LastKnownGoodPosition.YDouble)));
Trace.WriteLine(string.Format("StarRecognitionDistanceBasedLocation: Using objects {0} and {1}", goodTrackedObjects[0].TargetNo, goodTrackedObjects[1].TargetNo));
// There is only 1 good pair so fallback to using 2 star recognition
LocateTwoStarsWithStarRecognition(peakPixels, astroImage, pixels, goodTrackedObjects[0], goodTrackedObjects[1]);
}
}
sw.Stop();
Trace.WriteLine(string.Format("StarRecognitionDistanceBasedLocation: {0} sec", sw.Elapsed.TotalSeconds.ToString("0.00")));
}
}
private bool GetFitInMatrix(ITrackedObjectPsfFit gaussian, ref int matirxSize, float preselectedAperture)
{
rbGuidingStar.Text = "Guiding/Comparison Star";
m_IsBrightEnoughForAutoGuidingStar = false;
if (m_Aperture == null)
{
if (gaussian != null && !double.IsNaN(gaussian.FWHM) && TangraConfig.Settings.Photometry.SignalApertureUnitDefault == TangraConfig.SignalApertureUnit.FWHM)
{
m_Aperture = (float)(gaussian.FWHM * TangraConfig.Settings.Photometry.DefaultSignalAperture);
}
else
{
m_Aperture = (float)(TangraConfig.Settings.Photometry.DefaultSignalAperture);
}
}
else if (
gaussian != null && !double.IsNaN(gaussian.FWHM) && TangraConfig.Settings.Photometry.SignalApertureUnitDefault == TangraConfig.SignalApertureUnit.FWHM &&
m_Aperture < (float)(gaussian.FWHM * TangraConfig.Settings.Photometry.DefaultSignalAperture))
{
m_Aperture = (float)(gaussian.FWHM * TangraConfig.Settings.Photometry.DefaultSignalAperture);
}
nudFitMatrixSize.ValueChanged -= nudFitMatrixSize_ValueChanged;
try
{
uint[,] autoStarsPixels = m_AstroImage.GetMeasurableAreaPixels(m_Center.X, m_Center.Y, 35);
m_AutoStarsInLargerArea = StarFinder.GetStarsInArea(
ref autoStarsPixels,
m_AstroImage.Pixelmap.BitPixCamera,
m_AstroImage.Pixelmap.MaxSignalValue,
m_AstroImage.MedianNoise,
LightCurveReductionContext.Instance.DigitalFilter);
m_ProcessingPixels = ImageFilters.CutArrayEdges(autoStarsPixels, 9);
m_DisplayPixels = m_AstroImage.GetMeasurableAreaDisplayBitmapPixels(m_Center.X, m_Center.Y, 17);
m_AutoStarsInArea = new List <PSFFit>();
foreach (PSFFit autoStar in m_AutoStarsInLargerArea)
{
if (autoStar.XCenter > 9 && autoStar.XCenter < 9 + 17 &&
autoStar.YCenter > 9 && autoStar.YCenter < 9 + 17)
{
// Don't change original star so use a clone
PSFFit clone = autoStar.Clone();
clone.SetNewFieldCenterFrom35PixMatrix(8, 8);
m_AutoStarsInArea.Add(clone);
}
}
int oldMatirxSize = matirxSize;
if (m_AutoStarsInArea.Count == 0)
{
rbGuidingStar.Text = "Guiding/Comparison Star";
// There are no stars that are bright enough. Simply let the user do what they want, but still try to default to a sensible aperture size
MeasurementsHelper measurement = ReduceLightCurveOperation.DoConfiguredMeasurement(m_ProcessingPixels, m_Aperture.Value, m_AstroImage.Pixelmap.BitPixCamera, m_AstroImage.Pixelmap.MaxSignalValue, 3.0, ref matirxSize);
if (measurement.FoundBestPSFFit != null &&
measurement.FoundBestPSFFit.IsSolved &&
measurement.FoundBestPSFFit.Certainty > 0.1)
{
m_X0 = measurement.XCenter;
m_Y0 = measurement.YCenter;
m_FWHM = (float)measurement.FoundBestPSFFit.FWHM;
}
else
{
m_X0 = 8;
m_Y0 = 8;
m_FWHM = 6;
}
m_Gaussian = null;
nudFitMatrixSize.SetNUDValue(11);
}
else if (m_AutoStarsInArea.Count == 1)
{
// There is exactly one good star found. Go and do a fit in a wider area
double bestFindTolerance = 3.0;
for (int i = 0; i < 2; i++)
{
MeasurementsHelper measurement = ReduceLightCurveOperation.DoConfiguredMeasurement(m_ProcessingPixels, m_Aperture.Value, m_AstroImage.Pixelmap.BitPixCamera, m_AstroImage.Pixelmap.MaxSignalValue, bestFindTolerance, ref matirxSize);
if (measurement != null && matirxSize != -1)
{
if (matirxSize < 5)
{
// Do a centroid in the full area, and get another matix centered at the centroid
ImagePixel centroid = new ImagePixel(m_Center.X, m_Center.Y);
m_ProcessingPixels = m_AstroImage.GetMeasurableAreaPixels(centroid);
m_DisplayPixels = m_AstroImage.GetMeasurableAreaDisplayBitmapPixels(centroid);
m_X0 = centroid.X;
m_Y0 = centroid.Y;
m_FWHM = 6;
m_Gaussian = null;
nudFitMatrixSize.SetNUDValue(11);
}
else
{
m_X0 = measurement.XCenter;
m_Y0 = measurement.YCenter;
if (measurement.FoundBestPSFFit != null)
{
m_FWHM = (float)measurement.FoundBestPSFFit.FWHM;
m_Gaussian = measurement.FoundBestPSFFit;
}
else
{
m_FWHM = 6;
m_Gaussian = null;
}
m_ProcessingPixels = measurement.PixelData;
nudFitMatrixSize.SetNUDValue(matirxSize);
}
}
else
{
matirxSize = oldMatirxSize;
return(false);
}
if (m_Gaussian != null)
{
if (IsBrightEnoughtForGuidingStar())
{
rbGuidingStar.Text = "Guiding/Comparison Star";
m_IsBrightEnoughForAutoGuidingStar = true;
}
break;
}
}
}
else if (m_AutoStarsInArea.Count > 1)
{
rbGuidingStar.Text = "Guiding/Comparison Star";
// There are more stars found.
double xBest = m_Gaussian != null
? m_Gaussian.XCenter
: m_IsEdit ? ObjectToAdd.ApertureMatrixX0
: 8.5;
double yBest = m_Gaussian != null
? m_Gaussian.YCenter
: m_IsEdit ? ObjectToAdd.ApertureMatrixY0
: 8.5;
// by default use the one closest to the original location
PSFFit closestFit = m_AutoStarsInArea[0];
double closestDist = double.MaxValue;
foreach (PSFFit star in m_AutoStarsInArea)
{
double dist =
Math.Sqrt((star.XCenter - xBest) * (star.XCenter - xBest) +
(star.YCenter - yBest) * (star.YCenter - yBest));
if (closestDist > dist)
{
closestDist = dist;
closestFit = star;
}
}
m_X0 = (float)closestFit.XCenter;
m_Y0 = (float)closestFit.YCenter;
m_FWHM = (float)closestFit.FWHM;
m_Gaussian = closestFit;
nudFitMatrixSize.SetNUDValue(m_IsEdit ? ObjectToAdd.PsfFitMatrixSize : closestFit.MatrixSize);
}
//if (m_Gaussian == null && gaussian.Certainty > 0.1 && ImagePixel.ComputeDistance(gaussian.X0_Matrix, 8, gaussian.Y0_Matrix, 8) < 3)
//{
// // Id we failed to locate a bright enough autostar, but the default Gaussian is still certain enough and close enought to the center, we present it as a starting point
// m_X0 = (float)gaussian.X0_Matrix;
// m_Y0 = (float)gaussian.Y0_Matrix;
// m_FWHM = (float)gaussian.FWHM;
// m_Gaussian = gaussian;
//}
decimal appVal;
if (float.IsNaN(preselectedAperture))
{
if (float.IsNaN(m_Aperture.Value))
{
appVal = Convert.ToDecimal(TangraConfig.Settings.Photometry.DefaultSignalAperture);
}
else
{
appVal = Convert.ToDecimal(m_Aperture.Value);
if (nudAperture1.Maximum < appVal)
{
nudAperture1.Maximum = appVal + 1;
}
}
}
else
{
appVal = (decimal)preselectedAperture;
}
if ((float)appVal > m_Aperture)
{
m_Aperture = (float)appVal;
}
nudAperture1.SetNUDValue(Math.Round(appVal, 2));
PlotSingleTargetPixels();
PlotGaussian();
return(true);
}
finally
{
nudFitMatrixSize.ValueChanged += nudFitMatrixSize_ValueChanged;
}
}
