/// <summary>
///
/// Fit an ellipse to the points collection
/// </summary>
/// <param name="points">The points to be fitted</param>
/// <returns>An ellipse</returns>
public Ellipse EllipseLeastSquareFitting(AForge.Point[] points)
{
IntPtr seq = Marshal.AllocHGlobal(StructSize.MCvSeq);
IntPtr block = Marshal.AllocHGlobal(StructSize.MCvSeqBlock);
GCHandle handle = GCHandle.Alloc(points, GCHandleType.Pinned);
CvInvoke.cvMakeSeqHeaderForArray(
CvInvoke.CV_MAKETYPE((int)Emgu.CV.CvEnum.MAT_DEPTH.CV_32F, 2),
StructSize.MCvSeq,
StructSize.PointF,
handle.AddrOfPinnedObject(),
points.Length,
seq,
block);
Ellipse e = new Ellipse(CvInvoke.cvFitEllipse2(seq));
handle.Free();
Marshal.FreeHGlobal(seq);
Marshal.FreeHGlobal(block);
//this version of Emgu Ellipse fitting has a bug and should be modified as below
//and even after this modification, Box is smaller in a wrong angle
Ellipse ModifiedEllipse = new Emgu.CV.Structure.Ellipse(e.MCvBox2D.center, new SizeF(e.MCvBox2D.size.Width, e.MCvBox2D.size.Height), e.MCvBox2D.angle - 90);
return(ModifiedEllipse);
}
/// <summary>
/// Create a GpuMat of the specified size
/// </summary>
/// <param name="rows">The number of rows (height)</param>
/// <param name="cols">The number of columns (width)</param>
/// <param name="channels">The number of channels</param>
/// <param name="continuous">Indicates if the data should be continuous</param>
public GpuMat(int rows, int cols, int channels, bool continuous)
{
int matType = CvInvoke.CV_MAKETYPE((int)CvToolbox.GetMatrixDepth(typeof(TDepth)), channels);
if (continuous)
{
_ptr = GpuInvoke.GpuMatCreateContinuous(rows, cols, matType);
}
else
{
_ptr = GpuInvoke.GpuMatCreate(rows, cols, matType);
}
}
//public static PointF[] ReduceNoise(PointF[] whitePoints, Image<Gray, byte> img)
//{
// for (int i = 0; i < img.Width; i++)
// {
// for (int j = 0; j < img.Height; j++)
// {
// if()
// }
// }
//}
/// <summary>
/// Fit an ellipse to the points collection
/// </summary>
/// <param name="points">The points to be fitted</param>
/// <returns>An ellipse</returns>
public static Ellipse EllipseLeastSquareFitting(PointF[] points)
{
IntPtr seq = Marshal.AllocHGlobal(StructSize.MCvSeq);
IntPtr block = Marshal.AllocHGlobal(StructSize.MCvSeqBlock);
GCHandle handle = GCHandle.Alloc(points, GCHandleType.Pinned);
CvInvoke.cvMakeSeqHeaderForArray(
CvInvoke.CV_MAKETYPE((int)MAT_DEPTH.CV_32F, 2),
StructSize.MCvSeq,
StructSize.PointF,
handle.AddrOfPinnedObject(),
points.Length,
seq,
block);
Ellipse e = new Ellipse(CvInvoke.cvFitEllipse2(seq));
handle.Free();
Marshal.FreeHGlobal(seq);
Marshal.FreeHGlobal(block);
return(e);
}
static Tesseract()
{
//dummy code that is used to involve the static constructor of CvInvoke, if it has not already been called.
CvInvoke.CV_MAKETYPE(0, 0);
}
/// <summary>
/// Create a GpuMat of the specified size
/// </summary>
/// <param name="rows">The number of rows (height)</param>
/// <param name="cols">The number of columns (width)</param>
/// <param name="channels">The number of channels</param>
public GpuMat(int rows, int cols, int channels)
{
_ptr = GpuInvoke.GpuMatCreate(rows, cols, CvInvoke.CV_MAKETYPE((int)CvToolbox.GetMatrixDepth(typeof(TDepth)), channels));
}
