136 lines
3.7 KiB
C++
136 lines
3.7 KiB
C++
/***********************************************************************
|
|
* Software License Agreement (BSD License)
|
|
*
|
|
* Copyright 2008-2009 Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
|
|
* Copyright 2008-2009 David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
|
|
*
|
|
* THE BSD LICENSE
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*************************************************************************/
|
|
|
|
#ifndef OPENCV_FLANN_LINEAR_INDEX_H_
|
|
#define OPENCV_FLANN_LINEAR_INDEX_H_
|
|
|
|
//! @cond IGNORED
|
|
|
|
#include "nn_index.h"
|
|
|
|
namespace cvflann
|
|
{
|
|
|
|
struct LinearIndexParams : public IndexParams
|
|
{
|
|
LinearIndexParams()
|
|
{
|
|
(* this)["algorithm"] = FLANN_INDEX_LINEAR;
|
|
}
|
|
};
|
|
|
|
template <typename Distance>
|
|
class LinearIndex : public NNIndex<Distance>
|
|
{
|
|
public:
|
|
|
|
typedef typename Distance::ElementType ElementType;
|
|
typedef typename Distance::ResultType DistanceType;
|
|
|
|
|
|
LinearIndex(const Matrix<ElementType>& inputData, const IndexParams& params = LinearIndexParams(),
|
|
Distance d = Distance()) :
|
|
dataset_(inputData), index_params_(params), distance_(d)
|
|
{
|
|
}
|
|
|
|
LinearIndex(const LinearIndex&);
|
|
LinearIndex& operator=(const LinearIndex&);
|
|
|
|
flann_algorithm_t getType() const CV_OVERRIDE
|
|
{
|
|
return FLANN_INDEX_LINEAR;
|
|
}
|
|
|
|
|
|
size_t size() const CV_OVERRIDE
|
|
{
|
|
return dataset_.rows;
|
|
}
|
|
|
|
size_t veclen() const CV_OVERRIDE
|
|
{
|
|
return dataset_.cols;
|
|
}
|
|
|
|
|
|
int usedMemory() const CV_OVERRIDE
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void buildIndex() CV_OVERRIDE
|
|
{
|
|
/* nothing to do here for linear search */
|
|
}
|
|
|
|
void saveIndex(FILE*) CV_OVERRIDE
|
|
{
|
|
/* nothing to do here for linear search */
|
|
}
|
|
|
|
|
|
void loadIndex(FILE*) CV_OVERRIDE
|
|
{
|
|
/* nothing to do here for linear search */
|
|
|
|
index_params_["algorithm"] = getType();
|
|
}
|
|
|
|
void findNeighbors(ResultSet<DistanceType>& resultSet, const ElementType* vec, const SearchParams& /*searchParams*/) CV_OVERRIDE
|
|
{
|
|
ElementType* data = dataset_.data;
|
|
for (size_t i = 0; i < dataset_.rows; ++i, data += dataset_.cols) {
|
|
DistanceType dist = distance_(data, vec, dataset_.cols);
|
|
resultSet.addPoint(dist, (int)i);
|
|
}
|
|
}
|
|
|
|
IndexParams getParameters() const CV_OVERRIDE
|
|
{
|
|
return index_params_;
|
|
}
|
|
|
|
private:
|
|
/** The dataset */
|
|
const Matrix<ElementType> dataset_;
|
|
/** Index parameters */
|
|
IndexParams index_params_;
|
|
/** Index distance */
|
|
Distance distance_;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
//! @endcond
|
|
|
|
#endif // OPENCV_FLANN_LINEAR_INDEX_H_
|