public void PreviewSpectra(Spectra spectra)
{
btnMeasure.Enabled = true;
picSpectra.Visible = true;
lblSelectStarNote.Visible = false;
int xOffset = spectra.ZeroOrderPixelNo - 10;
float xCoeff = picSpectra.Width * 1.0f / spectra.Points.Count;
float colorCoeff = 255.0f / spectra.MaxSpectraValue;
using (Graphics g = Graphics.FromImage(picSpectra.Image))
{
foreach (SpectraPoint point in spectra.Points)
{
byte clr = (byte)(Math.Min(255, Math.Max(0, Math.Round(point.RawValue * colorCoeff))));
float x = xCoeff * (point.PixelNo - xOffset);
if (x >= 0)
{
g.DrawLine(m_GreyPens[clr], x, 0, x, picSpectra.Width);
}
}
g.Save();
}
picSpectra.Invalidate();
}
public void PopulateWaveLengths(Spectra spectra)
{
foreach (SpectraPoint point in spectra.Points)
{
point.Wavelength = ResolveWavelength(point.PixelNo);
}
}
private void frmRunMultiFrameSpectroscopy_Load(object sender, EventArgs e)
{
IImagePixel starCenter = m_VideoOperation.SelectedStar;
m_SpectraReader = new SpectraReader(m_AstroImage, m_VideoOperation.SelectedStarBestAngle, 1);
m_Spectra = m_SpectraReader.ReadSpectra((float)starCenter.XDouble, (float)starCenter.YDouble, (int)nudAreaWing.Value, (int)nudBackgroundWing.Value, (int)nudBackgroundGap.Value, PixelCombineMethod.Average);
m_Mapper = new RotationMapper(m_AstroImage.Width, m_AstroImage.Height, m_VideoOperation.SelectedStarBestAngle);
uint[,] pixels = m_AstroImage.GetMeasurableAreaPixels(starCenter.X, starCenter.Y, 35);
m_ZeroOrderPsf = new PSFFit(starCenter.X, starCenter.Y);
m_ZeroOrderPsf.Fit(pixels);
m_Spectra.ZeroOrderFWHM = (float)m_ZeroOrderPsf.FWHM;
PlotMeasurementAreas();
PlotAlignTarget();
nudDivisor.SetNUDValue((decimal)m_AstroImage.Pixelmap.MaxSignalValue);
nudMultiplier.Value = 1024;
}
public Spectra ReadSpectra(float x0, float y0, int halfWidth, int bgHalfWidth, int bgGap, PixelCombineMethod bgMethod)
{
var rv = new Spectra()
{
SignalAreaWidth = 2 * halfWidth,
BackgroundAreaHalfWidth = bgHalfWidth,
BackgroundAreaGap = bgGap,
MaxPixelValue = m_Image.Pixelmap.MaxSignalValue
};
int xFrom = int.MaxValue;
int xTo = int.MinValue;
// Find the destination pixel range at the destination horizontal
PointF p1 = m_Mapper.GetDestCoords(x0, y0);
rv.ZeroOrderPixelNo = (int)Math.Round(p1.X);
for (float x = p1.X - m_Mapper.MaxDestDiagonal; x < p1.X + m_Mapper.MaxDestDiagonal; x++)
{
PointF p = m_Mapper.GetSourceCoords(x, p1.Y);
if (m_SourceVideoFrame.Contains(p))
{
int xx = (int)x;
if (xx < xFrom)
{
xFrom = xx;
}
if (xx > xTo)
{
xTo = xx;
}
}
}
m_BgValues = new float[xTo - xFrom + 1];
m_BgPixelCount = new uint[xTo - xFrom + 1];
m_BgValuesList = new List <float> [xTo - xFrom + 1];
rv.InitialisePixelArray(xTo - xFrom + 1);
// Get all readings in the range
for (int x = xFrom; x <= xTo; x++)
{
var point = new SpectraPoint();
point.PixelNo = x;
point.RawSignalPixelCount = 0;
for (int z = -halfWidth; z <= halfWidth; z++)
{
PointF p = m_Mapper.GetSourceCoords(x, p1.Y + z);
int xx = (int)Math.Round(p.X);
int yy = (int)Math.Round(p.Y);
if (m_SourceVideoFrame.Contains(xx, yy))
{
float sum = 0;
int numPoints = 0;
for (float kx = -0.4f; kx < 0.5f; kx += 0.2f)
{
for (float ky = -0.4f; ky < 0.5f; ky += 0.2f)
{
p = m_Mapper.GetSourceCoords(x + kx, p1.Y + ky + z);
int xxx = (int)Math.Round(p.X);
int yyy = (int)Math.Round(p.Y);
if (m_SourceVideoFrame.Contains(xxx, yyy))
{
sum += (m_Image.Pixelmap[xxx, yyy] * m_PixelValueCoeff);
numPoints++;
}
}
}
float destPixVal = (sum / numPoints);
point.RawValue += destPixVal;
point.RawSignalPixelCount++;
rv.Pixels[x - xFrom, z + bgHalfWidth + bgGap + halfWidth - 1] = destPixVal;
}
}
point.RawSignal = point.RawValue;
rv.Points.Add(point);
#region Reads background
if (bgMethod == PixelCombineMethod.Average)
{
ReadAverageBackgroundForPixelIndex(halfWidth, bgHalfWidth, bgGap, x, p1.Y, x - xFrom);
}
else if (bgMethod == PixelCombineMethod.Median)
{
ReadMedianBackgroundForPixelIndex(halfWidth, bgHalfWidth, bgGap, x, p1.Y, x - xFrom);
}
#endregion
}
// Apply background
for (int i = 0; i < rv.Points.Count; i++)
{
SpectraPoint point = rv.Points[i];
if (bgMethod == PixelCombineMethod.Average)
{
point.RawBackgroundPerPixel = GetAverageBackgroundValue(point.PixelNo, xFrom, xTo, bgHalfWidth);
}
else if (bgMethod == PixelCombineMethod.Median)
{
point.RawBackgroundPerPixel = GetMedianBackgroundValue(point.PixelNo, xFrom, xTo, bgHalfWidth);
}
for (int z = -halfWidth - bgGap - bgHalfWidth + 1; z < -halfWidth - bgGap; z++)
{
rv.Pixels[i, z + bgHalfWidth + bgGap + halfWidth - 1] = point.RawBackgroundPerPixel;
}
for (int z = halfWidth + bgGap + 1; z < halfWidth + bgGap + bgHalfWidth + 1; z++)
{
rv.Pixels[i, z + bgHalfWidth + bgGap + halfWidth - 1] = point.RawBackgroundPerPixel;
}
point.RawValue -= point.RawBackgroundPerPixel * point.RawSignalPixelCount;
if (point.RawValue < 0 && !TangraConfig.Settings.Spectroscopy.AllowNegativeValues)
{
point.RawValue = 0;
}
}
rv.MaxSpectraValue = (uint)Math.Ceiling(rv.Points.Where(x => x.PixelNo > rv.ZeroOrderPixelNo + 20).Select(x => x.RawValue).Max());
return(rv);
}
public void WriteTo(BinaryWriter writer)
{
writer.Write(SERIALIZATION_VERSION);
writer.Write(CombinedMeasurements);
writer.Write(SignalAreaWidth);
writer.Write(MaxPixelValue);
writer.Write(MaxSpectraValue);
writer.Write(ZeroOrderPixelNo);
writer.Write(Points.Count);
foreach (var spectraPoint in Points)
{
spectraPoint.WriteTo(writer);
}
int width = Pixels.GetLength(0);
int height = Pixels.GetLength(1);
writer.Write(width);
writer.Write(height);
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
writer.Write(Pixels[x, y]);
}
}
MeasurementInfo.WriteTo(writer);
if (Calibration == null)
{
writer.Write(false);
}
else
{
writer.Write(true);
Calibration.WriteTo(writer);
}
writer.Write(RawMeasurements.Count);
for (int i = 0; i < RawMeasurements.Count; i++)
{
Spectra frameSpectra = RawMeasurements[i];
writer.Write(frameSpectra.SignalAreaWidth);
writer.Write(frameSpectra.MaxPixelValue);
writer.Write(frameSpectra.MaxSpectraValue);
writer.Write(frameSpectra.ZeroOrderPixelNo);
writer.Write(frameSpectra.ZeroOrderFWHM); // Version 2 Property
writer.Write(frameSpectra.Points.Count);
foreach (var spectraPoint in frameSpectra.Points)
{
spectraPoint.WriteTo(writer);
}
}
ProcessingInfo.WriteTo(writer);
ObservationInfo.WriteTo(writer);
// Version 2 Properties
writer.Write(ZeroOrderFWHM);
}
public MasterSpectra(BinaryReader reader)
{
int version = reader.ReadInt32();
CombinedMeasurements = reader.ReadInt32();
SignalAreaWidth = reader.ReadInt32();
MaxPixelValue = reader.ReadUInt32();
MaxSpectraValue = reader.ReadUInt32();
ZeroOrderPixelNo = reader.ReadInt32();
int pixelsCount = reader.ReadInt32();
Points = new List <SpectraPoint>();
for (int i = 0; i < pixelsCount; i++)
{
var point = new SpectraPoint(reader);
Points.Add(point);
}
int width = reader.ReadInt32();
int height = reader.ReadInt32();
Pixels = new float[width, height];
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
Pixels[x, y] = reader.ReadSingle();
}
}
MeasurementInfo = new MeasurementInfo(reader);
if (reader.ReadBoolean())
{
Calibration = new SpectraCalibration(reader);
}
int rawFramesCount = reader.ReadInt32();
for (int i = 0; i < rawFramesCount; i++)
{
var frameMeasurement = new Spectra();
RawMeasurements.Add(frameMeasurement);
frameMeasurement.SignalAreaWidth = reader.ReadInt32();
frameMeasurement.MaxPixelValue = reader.ReadUInt32();
frameMeasurement.MaxSpectraValue = reader.ReadUInt32();
frameMeasurement.ZeroOrderPixelNo = reader.ReadInt32();
frameMeasurement.ZeroOrderFWHM = float.NaN;
if (version > 1)
{
frameMeasurement.ZeroOrderFWHM = reader.ReadSingle();
}
int frameMeaCount = reader.ReadInt32();
for (int j = 0; j < frameMeaCount; j++)
{
var point = new SpectraPoint(reader);
frameMeasurement.Points.Add(point);
}
}
ProcessingInfo = new ProcessingInfo(reader);
ObservationInfo = new ObservationInfo(reader);
ZeroOrderFWHM = float.NaN;
if (version > 1)
{
ZeroOrderFWHM = reader.ReadSingle();
}
}
public Spectra ReadSpectra(float x0, float y0, int halfWidth, int bgHalfWidth, int bgGap, PixelCombineMethod bgMethod)
{
var rv = new Spectra()
{
SignalAreaWidth = 2 * halfWidth,
BackgroundAreaHalfWidth = bgHalfWidth,
BackgroundAreaGap = bgGap,
MaxPixelValue = m_Image.Pixelmap.MaxSignalValue
};
int xFrom = int.MaxValue;
int xTo = int.MinValue;
// Find the destination pixel range at the destination horizontal
PointF p1 = m_Mapper.GetDestCoords(x0, y0);
rv.ZeroOrderPixelNo = (int)Math.Round(p1.X);
for (float x = p1.X - m_Mapper.MaxDestDiagonal; x < p1.X + m_Mapper.MaxDestDiagonal; x++)
{
PointF p = m_Mapper.GetSourceCoords(x, p1.Y);
if (m_SourceVideoFrame.Contains(p))
{
int xx = (int) x;
if (xx < xFrom) xFrom = xx;
if (xx > xTo) xTo = xx;
}
}
m_BgValues = new float[xTo - xFrom + 1];
m_BgPixelCount = new uint[xTo - xFrom + 1];
m_BgValuesList = new List<float>[xTo - xFrom + 1];
rv.InitialisePixelArray(xTo - xFrom + 1);
// Get all readings in the range
for (int x = xFrom; x <= xTo; x++)
{
var point = new SpectraPoint();
point.PixelNo = x;
point.RawSignalPixelCount = 0;
for (int z = -halfWidth; z <= halfWidth; z++)
{
PointF p = m_Mapper.GetSourceCoords(x, p1.Y +z);
int xx = (int)Math.Round(p.X);
int yy = (int)Math.Round(p.Y);
if (m_SourceVideoFrame.Contains(xx, yy))
{
float sum = 0;
int numPoints = 0;
for (float kx = -0.4f; kx < 0.5f; kx+=0.2f)
for (float ky = -0.4f; ky < 0.5f; ky += 0.2f)
{
p = m_Mapper.GetSourceCoords(x + kx, p1.Y + ky + z);
int xxx = (int)Math.Round(p.X);
int yyy = (int)Math.Round(p.Y);
if (m_SourceVideoFrame.Contains(xxx, yyy))
{
sum += (m_Image.Pixelmap[xxx, yyy] * m_PixelValueCoeff);
numPoints++;
}
}
float destPixVal = (sum/numPoints);
point.RawValue += destPixVal;
point.RawSignalPixelCount++;
rv.Pixels[x - xFrom, z + bgHalfWidth + bgGap + halfWidth - 1] = destPixVal;
}
}
point.RawSignal = point.RawValue;
rv.Points.Add(point);
#region Reads background
if (bgMethod == PixelCombineMethod.Average)
{
ReadAverageBackgroundForPixelIndex(halfWidth, bgHalfWidth, bgGap, x, p1.Y, x - xFrom);
}
else if (bgMethod == PixelCombineMethod.Median)
{
ReadMedianBackgroundForPixelIndex(halfWidth, bgHalfWidth, bgGap, x, p1.Y, x - xFrom);
}
#endregion
}
// Apply background
for (int i = 0; i < rv.Points.Count; i++)
{
SpectraPoint point = rv.Points[i];
if (bgMethod == PixelCombineMethod.Average)
{
point.RawBackgroundPerPixel = GetAverageBackgroundValue(point.PixelNo, xFrom, xTo, bgHalfWidth);
}
else if (bgMethod == PixelCombineMethod.Median)
{
point.RawBackgroundPerPixel = GetMedianBackgroundValue(point.PixelNo, xFrom, xTo, bgHalfWidth);
}
for (int z = -halfWidth - bgGap - bgHalfWidth + 1; z < -halfWidth - bgGap; z++)
rv.Pixels[i, z + bgHalfWidth + bgGap + halfWidth - 1] = point.RawBackgroundPerPixel;
for (int z = halfWidth + bgGap + 1; z < halfWidth + bgGap + bgHalfWidth + 1; z++)
rv.Pixels[i, z + bgHalfWidth + bgGap + halfWidth - 1] = point.RawBackgroundPerPixel;
point.RawValue -= point.RawBackgroundPerPixel * point.RawSignalPixelCount;
if (point.RawValue < 0 && !TangraConfig.Settings.Spectroscopy.AllowNegativeValues)
point.RawValue = 0;
}
rv.MaxSpectraValue = (uint)Math.Ceiling(rv.Points.Where(x => x.PixelNo > rv.ZeroOrderPixelNo + 20).Select(x => x.RawValue).Max());
return rv;
}
public MasterSpectra(BinaryReader reader)
{
int version = reader.ReadInt32();
CombinedMeasurements = reader.ReadInt32();
SignalAreaWidth = reader.ReadInt32();
MaxPixelValue = reader.ReadUInt32();
MaxSpectraValue = reader.ReadUInt32();
ZeroOrderPixelNo = reader.ReadInt32();
int pixelsCount = reader.ReadInt32();
Points = new List<SpectraPoint>();
for (int i = 0; i < pixelsCount; i++)
{
var point = new SpectraPoint(reader);
Points.Add(point);
}
int width = reader.ReadInt32();
int height = reader.ReadInt32();
Pixels = new float[width,height];
for (int x = 0; x < width; x++)
for (int y = 0; y < height; y++)
{
Pixels[x, y] = reader.ReadSingle();
}
MeasurementInfo = new MeasurementInfo(reader);
if (reader.ReadBoolean())
Calibration = new SpectraCalibration(reader);
int rawFramesCount = reader.ReadInt32();
for (int i = 0; i < rawFramesCount; i++)
{
var frameMeasurement = new Spectra();
RawMeasurements.Add(frameMeasurement);
frameMeasurement.SignalAreaWidth = reader.ReadInt32();
frameMeasurement.MaxPixelValue = reader.ReadUInt32();
frameMeasurement.MaxSpectraValue = reader.ReadUInt32();
frameMeasurement.ZeroOrderPixelNo = reader.ReadInt32();
frameMeasurement.ZeroOrderFWHM = float.NaN;
if (version > 1)
{
frameMeasurement.ZeroOrderFWHM = reader.ReadSingle();
}
int frameMeaCount = reader.ReadInt32();
for (int j = 0; j < frameMeaCount; j++)
{
var point = new SpectraPoint(reader);
frameMeasurement.Points.Add(point);
}
}
ProcessingInfo = new ProcessingInfo(reader);
ObservationInfo = new ObservationInfo(reader);
ZeroOrderFWHM = float.NaN;
if (version > 1)
{
ZeroOrderFWHM = reader.ReadSingle();
}
}
