internal static extern Seq cvApproxPoly(
Seq src_seq,
int header_size,
MemStorage storage,
PolygonApproximation method,
double parameter,
int parameter2);
/// <summary>
/// Change mokkan extraction parameters
/// </summary>
private void ChangeExtraction()
{
if (_init)
{
return;
}
this.Cursor = Cursors.WaitCursor;
List <Boundary> bounds = MokkanExtraction.BoundaryTracking(_binBmp, _bndRec);
// get top regions
List <int> tops = new List <int>();
GetTopAreas(bounds, _mokkanNum, tops);
// number of regions
int n = Math.Min(_mokkanNum, tops.Count - 1);
DrawPolygon reducePolygon;
MkaMokkanInfo.LastRBangou -= _list.Count;
_list.Clear();
Bitmap ret = (Bitmap)_oriBmp.Clone();
Graphics g = Graphics.FromImage(ret);
g.DrawRectangle(Pens.Red, _bndRec);
for (int i = 0; i < n; i++)
{
if (_tolerance == 0)
{
reducePolygon = new DrawPolygon();
foreach (PointF p in bounds[tops[i]].Points)
{
reducePolygon.AddPoint(new Point((int)p.X, (int)p.Y));
}
}
else
{
// get reduce polygon
reducePolygon = PolygonApproximation.ReductionPolygon(bounds[tops[i]].Points, _tolerance);
}
_list.Add(reducePolygon);
MkaMokkanInfo.LastRBangou++;
g.DrawPolygon(_pen, bounds[tops[i]].Points.ToArray());
g.FillPolygon(_brush, bounds[tops[i]].Points.ToArray());
}
g.Dispose();
bounds.Clear();
tops.Clear();
if (picImageView.Image != null)
{
picImageView.Image.Dispose();
}
picImageView.Image = ret;
this.Cursor = Cursors.Default;
}
