public static extern ExceptionStatus stitching_FeaturesMatcher_apply(
IntPtr obj,
ref WImageFeatures features1,
ref WImageFeatures features2,
out int outSrcImgIdx,
out int outDstImgIdx,
IntPtr outMatches,
IntPtr outInliersMask,
out int outNumInliers,
IntPtr outH,
out double outConfidence);
/// <summary>
/// Converts std::vector to managed array
/// </summary>
/// <returns></returns>
public ImageFeatures[] ToArray()
{
var size = Size;
if (size == 0)
{
return(Array.Empty <ImageFeatures>());
}
VectorOfKeyPoint[]? keypointsVecs = null;
Mat[]? descriptors = null;
try
{
var nativeResult = new WImageFeatures[size];
keypointsVecs = new VectorOfKeyPoint[size];
descriptors = new Mat[size];
for (int i = 0; i < size; i++)
{
keypointsVecs[i] = new VectorOfKeyPoint();
descriptors[i] = new Mat();
nativeResult[i].Keypoints = keypointsVecs[i].CvPtr;
nativeResult[i].Descriptors = descriptors[i].CvPtr;
}
NativeMethods.vector_ImageFeatures_getElements(ptr, nativeResult);
var result = new ImageFeatures[size];
for (int i = 0; i < size; i++)
{
result[i] = new ImageFeatures(
imgIdx: nativeResult[i].ImgIdx,
imgSize: nativeResult[i].ImgSize,
keypoints: keypointsVecs[i].ToArray(),
descriptors: descriptors[i]);
}
// ElemPtr is IntPtr to memory held by this object, so make sure we are not disposed until finished with copy.
GC.KeepAlive(this);
return(result);
}
catch
{
if (descriptors is not null)
{
foreach (var mat in descriptors)
{
mat.Dispose();
}
}
throw;
}
finally
{
#pragma warning disable CA1508 // (???) Avoid dead conditional code
if (keypointsVecs is not null)
{
foreach (var vec in keypointsVecs)
{
vec.Dispose();
}
}
#pragma warning restore CA1508
}
}
