void SetStar(CaptureView capture, RegionView region)
{
var xSize = region.VisibleWidth;
var ySize = region.VisibleHeight;
var sub = Photometry.GetSubImage(2,
capture.ImageArray,
capture.YSize,
capture.XSize,
region.VisibleY,
region.VisibleX,
region.VisibleY + ySize,
region.VisibleX + xSize);
var unclipped = Photometry.KappaSigmaClip(sub[0], 1.0, 3);
var signal = new ushort[sub[0].Length - unclipped.Count];
var signals = 0;
var background = new ushort[unclipped.Count];
var backgrounds = 0;
for (var i = 0; i < sub[0].Length; i++)
{
if (unclipped.Contains(i))
{
background[backgrounds++] = sub[0][i];
}
else
{
signal[signals++] = sub[0][i];
}
}
var regionMean = Photometry.FindMean(sub[0]);
var backgroundSigma = Photometry.FindStandardDeviation(background);
var backgroundMean = Photometry.FindMean(background);
Focus.Star.SetStats(signals, backgrounds, regionMean, backgroundSigma, backgroundMean);
var snr = regionMean / backgroundSigma;
var bg = Focus.UsePhdBackgroundFormula ? regionMean + backgroundSigma * 2.0 : regionMean;
Photometry.Subtract(sub[0], (ushort)bg);
if (Focus.UseMedianFilter)
{
sub[0] = Photometry.MedianBoxFilter(sub[0], xSize, ySize);
}
Focus.Region.Capture = new CaptureView
{
XSize = xSize,
YSize = ySize,
ImageArray = sub[0],
Image = new Mat(ySize, xSize, MatType.CV_16UC1, sub[0])
};
Focus.RegionChanged();
if (signals < 5)
{
Focus.Star.SetStarNotFound();
}
else
{
var brightestX = 0;
var brightestY = 0;
var br = 0;
for (var y = 0; y < ySize; y++)
{
for (var x = 0; x < xSize; x++)
{
var brightest = brightestY * xSize + brightestX;
if (sub[0][brightest] < sub[0][y * xSize + x])
{
brightestX = x;
brightestY = y;
br = sub[0][brightest];
}
}
}
var center = Photometry.FindCenterOfMass(sub[0], xSize, ySize);
ushort peak = 0;
for (var i = 0; i < sub[0].Length; i++)
{
if (sub[0][i] > peak)
{
peak = sub[0][i];
}
}
var weightedCenterX = (center.X / (double)xSize) * 100.0;
var weightedCenterY = (center.Y / (double)ySize) * 100.0;
var brightestPixelX = (brightestX / (double)xSize) * 100.0;
var brightestPixelY = (brightestY / (double)ySize) * 100.0;
Focus.Star.SetMeasurements(
snr,
peak,
weightedCenterX,
weightedCenterY,
brightestPixelX,
brightestPixelY);
var samples = new ushort[40];
var max = 0.0;
for (var x = 0; x < 40; x++)
{
samples[x] = sub[0][(int)center.Y * 40 + x];
max = samples[x] > max ? samples[x] : max;
}
Focus.SetProfileSamples(samples);
}
}
