/// <summary>
/// Calculates 2D Fast Hough transform of an image.
/// </summary>
/// <param name="src">The source (input) image.</param>
/// <param name="dst">The destination image, result of transformation.</param>
/// <param name="dstMatDepth">The depth of destination image</param>
/// <param name="angleRange">The part of Hough space to calculate, see cv::AngleRangeOption</param>
/// <param name="op">The operation to be applied, see cv::HoughOp</param>
/// <param name="makeSkew">Specifies to do or not to do image skewing, see cv::HoughDeskewOption</param>
public static void FastHoughTransform(
InputArray src,
OutputArray dst,
MatType dstMatDepth,
AngleRangeOption angleRange = AngleRangeOption.ARO_315_135,
HoughOP op = HoughOP.FHT_ADD,
HoughDeskewOption makeSkew = HoughDeskewOption.DESKEW)
{
if (src == null)
{
throw new ArgumentNullException(nameof(src));
}
if (dst == null)
{
throw new ArgumentNullException(nameof(dst));
}
src.ThrowIfDisposed();
dst.ThrowIfNotReady();
NativeMethods.ximgproc_FastHoughTransform(src.CvPtr, dst.CvPtr, dstMatDepth, (int)angleRange, (int)op, (int)makeSkew);
GC.KeepAlive(src);
GC.KeepAlive(dst);
dst.Fix();
}
/// <summary>
/// Calculates coordinates of line segment corresponded by point in Hough space.
/// </summary>
/// <remarks>
/// If rules parameter set to RO_STRICT then returned line cut along the border of source image.
/// If rules parameter set to RO_WEAK then in case of point, which belongs
/// the incorrect part of Hough image, returned line will not intersect source image.
/// </remarks>
/// <param name="houghPoint">Point in Hough space.</param>
/// <param name="srcImgInfo">The source (input) image of Hough transform.</param>
/// <param name="angleRange">The part of Hough space where point is situated, see cv::AngleRangeOption</param>
/// <param name="makeSkew">Specifies to do or not to do image skewing, see cv::HoughDeskewOption</param>
/// <param name="rules">Specifies strictness of line segment calculating, see cv::RulesOption</param>
/// <returns>Coordinates of line segment corresponded by point in Hough space.</returns>
public static Vec4i HoughPoint2Line(
Point houghPoint,
InputArray srcImgInfo,
AngleRangeOption angleRange = AngleRangeOption.ARO_315_135,
HoughDeskewOption makeSkew = HoughDeskewOption.DESKEW,
RulesOption rules = RulesOption.IGNORE_BORDERS)
{
if (srcImgInfo == null)
{
throw new ArgumentNullException(nameof(srcImgInfo));
}
srcImgInfo.ThrowIfDisposed();
NativeMethods.HandleException(
NativeMethods.ximgproc_HoughPoint2Line(houghPoint, srcImgInfo.CvPtr, (int)angleRange, (int)makeSkew, (int)rules, out Vec4i ret));
GC.KeepAlive(srcImgInfo);
return(ret);
}
