private void meanShiftNoMask_SelectionChanged(object sender, EventArgs e)
{
using (CVImage frame = videoPlayer.LastFrame.CopyRegion(meanShiftNoMask.SelectionRect))
{
if (histNoMask != null)
{
histNoMask.Dispose();
}
histNoMask = frame.CalcHistogram(Bins);
noMaskHist.BinsPerChannel = Bins;
noMaskHist.ShowHistogram(frame);
}
NextFrame(false);
}
private void CalculateMaskedHistogram()
{
if (videoPlayer.LastFrame == null)
{
return;
}
using (CVImage frame = videoPlayer.LastFrame.CopyRegion(meanShift.SelectionRect))
{
// create a list of real fg and bg markers.
List <Point> realFg = new List <Point>(meanShift.GetMarkerLocations(Color.Blue));
List <Point> realBg = new List <Point>(meanShift.GetMarkerLocations(Color.Red));
// create the histogram mask.
using (CVImage mask = MaskedHistogram.PrepareMask(frame, realFg.ToArray(), realBg.ToArray(), includeNeautral.Checked, ffThresh.Value))
{
maskPicture.Image = mask.ToBitmap();
// show mask histogram to user interface.
maskHistogram.BinsPerChannel = Bins;
maskHistogram.ShowHistogram(frame, mask);
// calculate new histogram (dispose old one if exist).
if (hist != null)
{
hist.Dispose();
}
hist = frame.CalcHistogram(Bins, mask);
// apply mask to overlay (just for ui).
using (CVImage masked = MaskedHistogram.ApplyMask(frame, mask))
{
maskOverlay.Image = masked.ToBitmap();
}
}
}
NextFrame(false);
}
