/// <summary>
/// Create a new HOGDescriptor
/// </summary>
public HOGDescriptor()
{
_ptr = CvHOGDescriptorCreateDefault();
_rectStorage = new MemStorage();
_rectSeq = new Seq<Rectangle>(_rectStorage);
_vector = new VectorOfFloat();
}
/// <summary>
///
/// </summary>
/// <param name="image"></param>
/// <param name="winStride"></param>
/// <param name="locations"></param>
/// <returns></returns>
public float[] Compute(Image<Gray, Byte> image, Size winStride, Point[] locations)
{
using (VectorOfFloat vof = new VectorOfFloat())
{
GCHandle handle = GCHandle.Alloc(locations, GCHandleType.Pinned);
CvSelfSimDescriptorCompute(_ptr, image, vof, ref winStride, handle.AddrOfPinnedObject(), locations.Length);
handle.Free();
return vof.ToArray();
}
}
/// <summary>
///
/// </summary>
/// <param name="image"></param>
/// <param name="winStride"></param>
/// <param name="padding"></param>
/// <param name="locations">Locations for the computation. Can be null if not needed</param>
/// <returns>The descriptor vector</returns>
public float[] Compute(Image<Bgr, Byte> image, Size winStride, Size padding, Point[] locations)
{
using (VectorOfFloat desc = new VectorOfFloat())
{
if (locations == null)
CvHOGDescriptorCompute(_ptr, image, desc, winStride, padding, IntPtr.Zero);
else
{
using (MemStorage stor = new MemStorage())
{
Seq<Point> locationSeq = new Seq<Point>(stor);
CvHOGDescriptorCompute(_ptr, image, desc, winStride, padding, locationSeq);
}
}
return desc.ToArray();
}
}