private void ComputeFilteredCoordinates(TrajectoryKinematics kinematics, CalibrationHelper calibrationHelper)
{
double framerate = calibrationHelper.CaptureFramesPerSecond;
ButterworthFilter filter = new ButterworthFilter();
int bestCutoffIndex;
kinematics.FilterResultXs = filter.FilterSamples(kinematics.RawXs, framerate, 100, out bestCutoffIndex);
kinematics.XCutoffIndex = bestCutoffIndex;
kinematics.FilterResultYs = filter.FilterSamples(kinematics.RawYs, framerate, 100, out bestCutoffIndex);
kinematics.YCutoffIndex = bestCutoffIndex;
}
/// <summary>
/// Initialize the data and filter it if possible.
/// </summary>
public void Initialize(List <TimedPoint> samples, CalibrationHelper calibrationHelper)
{
this.Length = samples.Count;
Times = new long[samples.Count];
RawXs = new double[samples.Count];
RawYs = new double[samples.Count];
XCutoffIndex = -1;
YCutoffIndex = -1;
// Raw coordinates.
for (int i = 0; i < samples.Count; i++)
{
PointF point = calibrationHelper.GetPointAtTime(samples[i].Point, samples[i].T);
RawXs[i] = point.X;
RawYs[i] = point.Y;
Times[i] = samples[i].T;
}
this.CanFilter = PreferencesManager.PlayerPreferences.EnableFiltering && samples.Count > 10;
if (this.CanFilter)
{
double framerate = calibrationHelper.CaptureFramesPerSecond;
ButterworthFilter filter = new ButterworthFilter();
// Filter the results a hundred times and store all data along with the best cutoff frequency.
int tests = 100;
int bestCutoffIndexX;
FilterResultXs = filter.FilterSamples(RawXs, framerate, tests, out bestCutoffIndexX);
XCutoffIndex = bestCutoffIndexX;
int bestCutoffIndexY;
FilterResultYs = filter.FilterSamples(RawYs, framerate, tests, out bestCutoffIndexY);
YCutoffIndex = bestCutoffIndexY;
}
BestFitCircle = CircleFitter.Fit(this);
}