public static List <PSFFit> GetStarsInArea(
ref uint[,] data, int bpp, uint maxSignalValue, TangraConfig.PreProcessingFilter filter,
List <PotentialStarStruct> allPotentialStars,
List <PSFFit> allFoundStars,
uint aboveNoiseLevelRequired, double minDistanceInPixels,
bool useLPDFilter, Rectangle excludeArea, FilterPotentialStars filterCallback)
{
double minFWHM = TangraConfig.Settings.Special.StarFinderMinFWHM;
double maxFWHM = TangraConfig.Settings.Special.StarFinderMaxFWHM;
int STAR_MATRIX_FIT = TangraConfig.Settings.Special.StarFinderFitArea;
Stopwatch sw = new Stopwatch();
sw.Start();
uint[,] lpdData;
List <PotentialStarStruct> potentialStars = GetPeakPixelsInArea(
data, out lpdData, bpp, maxSignalValue, aboveNoiseLevelRequired, minDistanceInPixels, useLPDFilter, excludeArea);
if (filterCallback != null)
{
filterCallback(potentialStars);
}
sw.Stop();
Trace.WriteLine(string.Format("GetPeakPixelsInArea: {0} sec", sw.Elapsed.TotalSeconds.ToString("0.00")));
if (potentialStars.Count > 3)
{
// Only include the 3 brightest stars. The other ones cannot be stars
potentialStars.Sort((x, y) => y.Z.CompareTo(x.Z));
potentialStars = potentialStars.Take(3).ToList();
}
// Debugging purposes
if (allPotentialStars != null)
{
allPotentialStars.AddRange(potentialStars);
}
uint[,] lpData = data;
List <PSFFit> foundStars = new List <PSFFit>();
double MIN_DISTANCE_OF_PEAK_PIXEL_FROM_CENTER = TangraConfig.Settings.Special.StarFinderMinDistanceOfPeakPixelFromCenter;
sw.Reset();
sw.Start();
foreach (PotentialStarStruct starToTest in potentialStars)
{
PSFFit fit = new PSFFit(starToTest.X, starToTest.Y);
int fitMatrix = (int)Math.Min(data.GetLength(0), STAR_MATRIX_FIT + 2);
// Get a matrix with 1 pixel larger each way and set the border pixels to zero
fit.Fit(lpData, fitMatrix, starToTest.X, starToTest.Y, true);
if (fit.IsSolved)
{
double distanceFromCenter = ImagePixel.ComputeDistance(fit.X0_Matrix, fitMatrix / 2, fit.Y0_Matrix, fitMatrix / 2);
if (fit.Certainty > 0 &&
fit.FWHM >= minFWHM &&
fit.FWHM <= maxFWHM &&
distanceFromCenter < MIN_DISTANCE_OF_PEAK_PIXEL_FROM_CENTER &&
fit.IMax > aboveNoiseLevelRequired)
{
// This object passes all tests to be furhter considered as a star
foundStars.Add(fit);
}
}
if (allFoundStars != null)
{
allFoundStars.Add(fit);
}
}
foundStars.Sort((f1, f2) => f1.IMax.CompareTo(f2.IMax));
PSFFit[] testStars = foundStars.ToArray();
for (int i = 0; i < testStars.Length; i++)
{
PSFFit fainterStar = testStars[i];
for (int j = i + 1; j < testStars.Length; j++)
{
PSFFit brighterStar = testStars[j];
if (fainterStar.UniqueId == brighterStar.UniqueId)
{
continue;
}
// If a the max of a fainter star is inside the fit of a brighter star
// then see if it is simply not a point of the other star
double dist = Math.Sqrt((fainterStar.XCenter - brighterStar.XCenter) * (fainterStar.XCenter - brighterStar.XCenter) + (fainterStar.YCenter - brighterStar.YCenter) * (fainterStar.YCenter - brighterStar.YCenter));
if (dist <= minDistanceInPixels)
{
if (foundStars.Contains(fainterStar))
{
foundStars.Remove(fainterStar);
}
}
}
}
sw.Stop();
Trace.WriteLine(string.Format("Doing PSFFitting: {0} sec", sw.Elapsed.TotalSeconds.ToString("0.00")));
switch (filter)
{
case TangraConfig.PreProcessingFilter.NoFilter:
break;
case TangraConfig.PreProcessingFilter.LowPassFilter:
data = lpData;
break;
case TangraConfig.PreProcessingFilter.LowPassDifferenceFilter:
data = lpdData;
break;
}
return(foundStars);
}
public static List<PSFFit> GetStarsInArea(
ref uint[,] data, int bpp, uint maxSignalValue, TangraConfig.PreProcessingFilter filter,
List<PotentialStarStruct> allPotentialStars,
List<PSFFit> allFoundStars,
uint aboveNoiseLevelRequired, double minDistanceInPixels,
bool useLPDFilter, Rectangle excludeArea, FilterPotentialStars filterCallback)
{
double minFWHM = TangraConfig.Settings.Special.StarFinderMinFWHM;
double maxFWHM = TangraConfig.Settings.Special.StarFinderMaxFWHM;
int STAR_MATRIX_FIT = TangraConfig.Settings.Special.StarFinderFitArea;
Stopwatch sw = new Stopwatch();
sw.Start();
uint[,] lpdData;
List<PotentialStarStruct> potentialStars = GetPeakPixelsInArea(
data, out lpdData, bpp, maxSignalValue, aboveNoiseLevelRequired, minDistanceInPixels, useLPDFilter, excludeArea);
if (filterCallback != null) filterCallback(potentialStars);
sw.Stop();
Trace.WriteLine(string.Format("GetPeakPixelsInArea: {0} sec", sw.Elapsed.TotalSeconds.ToString("0.00")));
if (potentialStars.Count > 3)
{
// Only include the 3 brightest stars. The other ones cannot be stars
potentialStars.Sort((x, y) => y.Z.CompareTo(x.Z));
potentialStars = potentialStars.Take(3).ToList();
}
// Debugging purposes
if (allPotentialStars != null)
allPotentialStars.AddRange(potentialStars);
uint[,] lpData = data;
List<PSFFit> foundStars = new List<PSFFit>();
double MIN_DISTANCE_OF_PEAK_PIXEL_FROM_CENTER = TangraConfig.Settings.Special.StarFinderMinDistanceOfPeakPixelFromCenter;
sw.Reset();
sw.Start();
foreach (PotentialStarStruct starToTest in potentialStars)
{
PSFFit fit = new PSFFit(starToTest.X, starToTest.Y);
int fitMatrix = (int)Math.Min(data.GetLength(0), STAR_MATRIX_FIT + 2);
// Get a matrix with 1 pixel larger each way and set the border pixels to zero
fit.Fit(lpData, fitMatrix, starToTest.X, starToTest.Y, true);
if (fit.IsSolved)
{
double distanceFromCenter = ImagePixel.ComputeDistance(fit.X0_Matrix, fitMatrix / 2, fit.Y0_Matrix, fitMatrix / 2);
if (fit.Certainty > 0 &&
fit.FWHM >= minFWHM &&
fit.FWHM <= maxFWHM &&
distanceFromCenter < MIN_DISTANCE_OF_PEAK_PIXEL_FROM_CENTER &&
fit.IMax > aboveNoiseLevelRequired)
{
// This object passes all tests to be furhter considered as a star
foundStars.Add(fit);
}
}
if (allFoundStars != null)
allFoundStars.Add(fit);
}
foundStars.Sort((f1, f2) => f1.IMax.CompareTo(f2.IMax));
PSFFit[] testStars = foundStars.ToArray();
for (int i = 0; i < testStars.Length; i++)
{
PSFFit fainterStar = testStars[i];
for (int j = i + 1; j < testStars.Length; j++)
{
PSFFit brighterStar = testStars[j];
if (fainterStar.UniqueId == brighterStar.UniqueId) continue;
// If a the max of a fainter star is inside the fit of a brighter star
// then see if it is simply not a point of the other star
double dist = Math.Sqrt((fainterStar.XCenter - brighterStar.XCenter) * (fainterStar.XCenter - brighterStar.XCenter) + (fainterStar.YCenter - brighterStar.YCenter) * (fainterStar.YCenter - brighterStar.YCenter));
if (dist <= minDistanceInPixels)
{
if (foundStars.Contains(fainterStar)) foundStars.Remove(fainterStar);
}
}
}
sw.Stop();
Trace.WriteLine(string.Format("Doing PSFFitting: {0} sec", sw.Elapsed.TotalSeconds.ToString("0.00")));
switch (filter)
{
case TangraConfig.PreProcessingFilter.NoFilter:
break;
case TangraConfig.PreProcessingFilter.LowPassFilter:
data = lpData;
break;
case TangraConfig.PreProcessingFilter.LowPassDifferenceFilter:
data = lpdData;
break;
}
return foundStars;
}
