PointMatcher<T>::DataPoints::DataPoints(const Labels& featureLabels, const Labels& descriptorLabels, const size_t pointCount):
	featureLabels(featureLabels),
	descriptorLabels(descriptorLabels)
{
	features.resize(featureLabels.totalDim(), pointCount);
	if(descriptorLabels.totalDim())
		descriptors.resize(descriptorLabels.totalDim(), pointCount);
}