/// <summary>
/// Train the calonder classifier with the specific images
/// </summary>
/// <param name="trainImage">The traning image</param>
/// <param name="keypoints">The keypoints on this image</param>
/// <param name="numTrees">Use 48 for default</param>
/// <param name="depth">Use 9 for default</param>
/// <param name="views">Use 5000 for default</param>
/// <param name="reducedNumDim">use 176 for default</param>
/// <param name="numQuantBits">Use 4 for default</param>
public void Train(
Image <TColor, Byte> trainImage,
Point[] keypoints,
int numTrees, int depth,
int views, int reducedNumDim,
int numQuantBits)
{
Debug.Assert(reducedNumDim <= keypoints.Length, "ReducedNumDim should be smaller or equals the number of keypoints");
Random r = new Random();
UInt64 rng = (UInt64)r.Next();
GCHandle handle = GCHandle.Alloc(keypoints, GCHandleType.Pinned);
RTreeClassifierExtern.CvRTreeClassifierTrain(
_ptr,
trainImage,
handle.AddrOfPinnedObject(),
keypoints.Length,
ref rng,
numTrees,
depth,
views,
new IntPtr(reducedNumDim),
numQuantBits,
false);
handle.Free();
}
/// <summary>
/// Compute the signiture from the given location on the image
/// </summary>
/// <param name="image">The image to compute signiture from</param>
/// <param name="keypoint">The location of the key point</param>
/// <param name="patchSize">The size of the patch</param>
/// <returns>null if the signiture cannot be computed, otherwise the signiture itself is returned.</returns>
public float[] GetSigniture(Image <TColor, Byte> image, Point keypoint, int patchSize)
{
float[] result = new float[NumberOfClasses];
GCHandle handle = GCHandle.Alloc(result, GCHandleType.Pinned);
int count = RTreeClassifierExtern.CvRTreeClassifierGetSigniture(_ptr, image, ref keypoint, patchSize, handle.AddrOfPinnedObject());
handle.Free();
return(count == 0 ? null : result);
}
/// <summary>
/// Create an Calonder classifier
/// </summary>
public RTreeClassifier()
{
_ptr = RTreeClassifierExtern.CvRTreeClassifierCreate();
}
/// <summary>
/// Release the unmanaged resource associated with this classifier
/// </summary>
protected override void DisposeObject()
{
RTreeClassifierExtern.CvRTreeClassifierRelease(_ptr);
}
