I'm using OpenCV Contrib Face module in Java. Java wrapper is automatically generated from C++ source code based on CV_WRAP
tag. So far so good, but unfortunately not all methods I need have wrappers. :-(
I'm using FaceRecognizer.predict
method which returns label of face that is most similar (in terms of eigenfaces) to given face. What I desperately need is to get N>1
(for example N=5
) best matches, ie. N
images with minimal PredictResult.distance
.
This is automatically generated Java's wrapper for predict
method:
//
// C++: void predict(Mat src, int& label, double& confidence)
//
//javadoc: FaceRecognizer::predict(src, label, confidence)
public void predict(Mat src, int[] label, double[] confidence)
{
double[] label_out = new double[1];
double[] confidence_out = new double[1];
predict_1(nativeObj, src.nativeObj, label_out, confidence_out);
if(label!=null) label[0] = (int)label_out[0];
if(confidence!=null) confidence[0] = (double)confidence_out[0];
return;
}
As you can see, it uses two arrays (label_out
and confidence_out
) of length equal 1
. I need more generalized version which is available in C++ source code as a StandardCollector::getResults
method.
Is there an easy way to add a few CV_WRAP
'here and there' to get multiple predictions using Java wrapper for:
std::vector< std::pair<int, double> > StandardCollector::getResults(bool sorted) const {
std::vector< std::pair<int, double> > res(data.size());
std::transform(data.begin(), data.end(), res.begin(), &toPair);
if (sorted)
{
std::sort(res.begin(), res.end(), &pairLess);
}
return res;
}
?
Thanks in advance!