/// <summary>
/// Release the unmanaged resources associated with this object
/// </summary>
protected override void DisposeObject()
{
if (_sharedPtr != IntPtr.Zero)
{
Features2DInvoke.cveSIFTRelease(ref _sharedPtr);
}
base.DisposeObject();
}
/// <summary>
/// Create a SIFT using the specific values
/// </summary>
/// <param name="nFeatures">The desired number of features. Use 0 for un-restricted number of features</param>
/// <param name="nOctaveLayers">The number of octave layers. Use 3 for default</param>
/// <param name="contrastThreshold">Contrast threshold. Use 0.04 as default</param>
/// <param name="edgeThreshold">Detector parameter. Use 10.0 as default</param>
/// <param name="sigma">Use 1.6 as default</param>
public SIFT(
int nFeatures = 0, int nOctaveLayers = 3,
double contrastThreshold = 0.04, double edgeThreshold = 10.0,
double sigma = 1.6)
{
_ptr = Features2DInvoke.cveSIFTCreate(nFeatures, nOctaveLayers, contrastThreshold, edgeThreshold, sigma,
ref _feature2D, ref _sharedPtr);
}