public static IEnumerable <Rectangle> FindCandidateObjectLocations(
Array2DBase image,
MatrixRangeExp <double> kvals,
uint minSize = 20,
uint maxMergingIterations = 50)
{
if (image == null)
{
throw new ArgumentNullException(nameof(image));
}
if (kvals == null)
{
throw new ArgumentNullException(nameof(kvals));
}
var array2DType = image.ImageType.ToNativeArray2DType();
using (var dets = new VectorOfRectangle())
{
var ret = Native.find_candidate_object_locations(array2DType, image.NativePtr, dets.NativePtr, IntPtr.Zero, minSize, maxMergingIterations);
if (ret == Native.ErrorType.ArrayTypeNotSupport)
{
throw new ArgumentException($"{image.ImageType} is not supported.");
}
return(dets.ToArray());
}
}
public void CreateWithCollection()
{
const int size = 10;
var source = Enumerable.Range(0, size).Select(i => new Rectangle(i, i, i, i));
var vector = new VectorOfRectangle(source);
Assert.AreEqual(vector.Size, size);
var ret = vector.ToArray();
for (var i = 0; i < size; i++)
{
Assert.AreEqual(ret[i].Left, i);
Assert.AreEqual(ret[i].Top, i);
Assert.AreEqual(ret[i].Right, i);
Assert.AreEqual(ret[i].Bottom, i);
}
this.DisposeAndCheckDisposedState(vector);
}
public Rectangle[] Detect(Array2DBase image, double threshold = 0d)
{
this.ThrowIfDisposed();
if (image == null)
{
throw new ArgumentNullException(nameof(image));
}
image.ThrowIfDisposed();
using (var dets = new VectorOfRectangle())
{
var inType = image.ImageType.ToNativeArray2DType();
var ret = Native.frontal_face_detector_operator(this.NativePtr, inType, image.NativePtr, threshold, dets.NativePtr);
switch (ret)
{
case Dlib.Native.ErrorType.InputArrayTypeNotSupport:
throw new ArgumentException($"Input {inType} is not supported.");
}
return(dets.ToArray());
}
}