NICE_VisLearning/features/regionfeatures/RFBoVCodebook.cpp

#ifdef NICE_USELIB_OPENMP
#include <omp.h>
#endif

#include "vislearning/features/regionfeatures/RFBoVCodebook.h"

#include <iostream>
#include "core/basics/Timer.h"
using namespace OBJREC;
using namespace std;
using namespace NICE;


RFBoVCodebook::RFBoVCodebook( const Config *_conf, LocalFeature *_lf ):RFBoV(_conf, _lf)
{
	cb = NULL;
}

void RFBoVCodebook::setCodebook(Codebook *_cb){
	cb = _cb;
}

void RFBoVCodebook::convert(const Matrix &mask, const RegionGraph &rg, VVector &infeats, VVector &outfeats, VVector &positions)
{
	int fsize = conf->gI("BoVMoosmann", "codebooksize", 1024);
	for(int i = 0; i < (int)rg.size(); i++)
	{
		Vector v(fsize);
		v.set(0.0);
		outfeats.push_back(v);
	}
	vector<double> counter(rg.size(), 0.0);

#pragma omp parallel for
	for(int i = 0; i < (int)infeats.size(); i++)
	{
		SparseVector probs;

		cb->vote(infeats[i], probs);

		int r = mask(positions[i][0], positions[i][1]);

#pragma omp critical
		{
			for(int j = 0; j < fsize; j++)
			{
				double val = probs.get(j);
				outfeats[r][j] += val;
				counter[r] += val;
			}
		}
	}

	for(int i = 0; i < (int)rg.size(); i++)
	{
		outfeats[i] /= counter[i];
	}
}

RFBoVCodebook::~RFBoVCodebook()
{
}