/// <summary>
/// Increasing by unit - trapezium
/// </summary>
/// <param name="bwImg"></param>
/// <returns></returns>
public static Image <Gray, byte> fitTrapeziumToMask1(Image <Gray, byte> bwImg)
{
Point c = new Point((int)(bwImg.Width / 2.0), (int)(bwImg.Height - 1));
Trapezium t = new Trapezium(c);
var black = bwImg.CopyBlank();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
var aux = black.And(bwImg);
while (CvInvoke.CountNonZero(aux) == 0)
{
t.BaseWidth++;
t.Height++;
t.LeftTriangle++;
t.RightTriangle++;
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
CvInvoke.BitwiseAnd(black, aux, aux);
}
t.BaseWidth--;
t.Height--;
t.LeftTriangle--;
t.RightTriangle--;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
while (CvInvoke.CountNonZero(black.And(bwImg)) == 0 &&
(c.X - t.BaseWidth / 2 - t.LeftTriangle > 0) &&
(c.X + t.BaseWidth / 2 + t.RightTriangle < black.Width))
{
t.BaseWidth++;
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
}
t.BaseWidth--;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
while (CvInvoke.CountNonZero(black.And(bwImg)) == 0 && (c.X - t.BaseWidth / 2 - t.LeftTriangle > 0))
{
t.LeftTriangle++;
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
}
t.LeftTriangle--;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
while (CvInvoke.CountNonZero(black.And(bwImg)) == 0 && (c.X + t.BaseWidth / 2 + t.RightTriangle < black.Width))
{
t.RightTriangle++;
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
}
t.RightTriangle--;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
while (CvInvoke.CountNonZero(black.And(bwImg)) == 0 && t.Height < black.Height)
{
t.Height++;
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
}
t.Height--;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
return(black);
}
/// <summary>
/// Increasing by dividing - trapezium
/// </summary>
/// <param name="bwImg"></param>
/// <returns></returns>
public static Image <Gray, byte> fitTrapeziumToMask(Image <Gray, byte> bwImg)
{
Point c = new Point((int)(bwImg.Width / 2.0), (int)(bwImg.Height - 1));
Trapezium t = new Trapezium(c);
int inistep = 16;
int step = inistep;
var black = bwImg.CopyBlank();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
var aux = black.And(bwImg);
if (CvInvoke.CountNonZero(aux) != 0)
{
bwImg._Not();
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
aux = black.And(bwImg);
}
while (CvInvoke.CountNonZero(aux) == 0 &&
(c.X - t.BaseWidth / 2 - t.LeftTriangle > 0) &&
(c.X + t.BaseWidth / 2 + t.RightTriangle < black.Width))
{
t.BaseWidth += step;
t.Height += step;
t.LeftTriangle += step;
t.RightTriangle += step;
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
CvInvoke.BitwiseAnd(black, bwImg, aux);
}
t.BaseWidth -= step;
t.Height -= step;
t.LeftTriangle -= step;
t.RightTriangle -= step;
t.BaseWidth = Math.Max(t.BaseWidth, 1);
t.Height = Math.Max(t.BaseWidth, 1);
t.LeftTriangle = Math.Max(t.BaseWidth, 1);
t.RightTriangle = Math.Max(t.BaseWidth, 1);
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
while (step > 0)
{
if (CvInvoke.CountNonZero(aux) == 0 &&
(c.X - t.BaseWidth / 2 - t.LeftTriangle > 0) &&
(c.X + t.BaseWidth / 2 + t.RightTriangle < black.Width))
{
t.BaseWidth += step;
}
else
{
t.BaseWidth -= step;
step /= 2;
}
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
CvInvoke.BitwiseAnd(black, bwImg, aux);
}
if (t.BaseWidth < 0)
{
black.SetZero();
return(black);
}
while (CvInvoke.CountNonZero(aux) > 0)
{
t.BaseWidth--;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
CvInvoke.BitwiseAnd(black, bwImg, aux);
}
step = inistep;
while (step > 0)
{
if (CvInvoke.CountNonZero(aux) == 0 && (c.X - t.BaseWidth / 2 - t.LeftTriangle > 0))
{
t.LeftTriangle += step;
}
else
{
t.LeftTriangle -= step;
step /= 2;
}
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
CvInvoke.BitwiseAnd(black, bwImg, aux);
}
t.LeftTriangle--;
step = inistep;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
while (step > 0)
{
if (CvInvoke.CountNonZero(aux) == 0 && (c.X + t.BaseWidth / 2 + t.RightTriangle < black.Width))
{
t.RightTriangle += step;
}
else
{
t.RightTriangle -= step;
step /= 2;
}
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
CvInvoke.BitwiseAnd(black, bwImg, aux);
}
t.RightTriangle--;
step = inistep;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
while (step > 0)
{
if (CvInvoke.CountNonZero(aux) == 0 && t.Height < black.Height)
{
t.Height += step;
}
else
{
t.Height -= step;
step /= 2;
}
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
CvInvoke.BitwiseAnd(black, bwImg, aux);
}
t.Height--;
black.SetZero();
black.FillConvexPoly(t.getVertexCoordinates(), new Gray(255));
return(black);
}
