/// <summary>
/// Finds centers in the grid of circles.
/// </summary>
/// <param name="image">grid view of input circles; it must be an 8-bit grayscale or color image.</param>
/// <param name="patternSize">number of circles per row and column ( patternSize = Size(points_per_row, points_per_colum) ).</param>
/// <param name="centers">output array of detected centers.</param>
/// <param name="flags">various operation flags that can be one of the FindCirclesGridFlag values</param>
/// <param name="blobDetector">feature detector that finds blobs like dark circles on light background.</param>
/// <returns></returns>
public static bool FindCirclesGrid(
InputArray image,
Size patternSize,
out Point2f[] centers,
FindCirclesGridFlags flags = FindCirclesGridFlags.SymmetricGrid,
FeatureDetector blobDetector = null)
{
if (image == null)
throw new ArgumentNullException("image");
image.ThrowIfDisposed();
using (var centersVec = new VectorOfPoint2f())
{
int ret = NativeMethods.calib3d_findCirclesGrid_vector(
image.CvPtr, patternSize, centersVec.CvPtr, (int)flags, ToPtr(blobDetector));
centers = centersVec.ToArray();
return ret != 0;
}
}
/// <summary>
/// Finds centers in the grid of circles.
/// </summary>
/// <param name="image">grid view of input circles; it must be an 8-bit grayscale or color image.</param>
/// <param name="patternSize">number of circles per row and column ( patternSize = Size(points_per_row, points_per_colum) ).</param>
/// <param name="centers">output array of detected centers.</param>
/// <param name="flags">various operation flags that can be one of the FindCirclesGridFlag values</param>
/// <param name="blobDetector">feature detector that finds blobs like dark circles on light background.</param>
/// <returns></returns>
public static bool FindCirclesGrid(
InputArray image,
Size patternSize,
OutputArray centers,
FindCirclesGridFlags flags = FindCirclesGridFlags.SymmetricGrid,
FeatureDetector blobDetector = null)
{
if (image == null)
throw new ArgumentNullException("image");
if (centers == null)
throw new ArgumentNullException("centers");
image.ThrowIfDisposed();
centers.ThrowIfNotReady();
int ret = NativeMethods.calib3d_findCirclesGrid_InputArray(
image.CvPtr, patternSize, centers.CvPtr, (int)flags, ToPtr(blobDetector));
centers.Fix();
return ret != 0;
}
