/// <summary>
/// Attempts to determine whether the input image is a view of the chessboard pattern and locate internal chessboard corners
/// </summary>
/// <param name="image">Source chessboard view</param>
/// <param name="patternSize">The number of inner corners per chessboard row and column</param>
/// <param name="flags">Various operation flags</param>
/// <returns>The corners detected if the chess board pattern is found, otherwise null is returned</returns>
public static PointF[] FindChessboardCorners(
Image <Gray, Byte> image,
Size patternSize,
CvEnum.CALIB_CB_TYPE flags)
{
int cornerCount = 0;
PointF[] corners = new PointF[patternSize.Width * patternSize.Height];
GCHandle handle = GCHandle.Alloc(corners, GCHandleType.Pinned);
bool patternFound =
CvInvoke.cvFindChessboardCorners(
image.Ptr,
patternSize,
handle.AddrOfPinnedObject(),
ref cornerCount,
flags) != 0;
handle.Free();
if (cornerCount != corners.Length)
{
Array.Resize(ref corners, cornerCount);
}
return(patternFound ? corners : null);
}
public static extern int cvFindChessboardCorners(
IntPtr image,
Size patternSize,
IntPtr corners,
ref int cornerCount,
CvEnum.CALIB_CB_TYPE flags);
