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-/***********************************************************************
- * 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.
- *
- * 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_SAMPLING_H_
-#define OPENCV_FLANN_SAMPLING_H_
-
-#include "matrix.h"
-#include "random.h"
-
-namespace cvflann
-{
-
-template<typename T>
-Matrix<T> random_sample(Matrix<T>& srcMatrix, long size, bool remove = false)
-{
- Matrix<T> newSet(new T[size * srcMatrix.cols], size,srcMatrix.cols);
-
- T* src,* dest;
- for (long i=0; i<size; ++i) {
- long r = rand_int((int)(srcMatrix.rows-i));
- dest = newSet[i];
- src = srcMatrix[r];
- std::copy(src, src+srcMatrix.cols, dest);
- if (remove) {
- src = srcMatrix[srcMatrix.rows-i-1];
- dest = srcMatrix[r];
- std::copy(src, src+srcMatrix.cols, dest);
- }
- }
- if (remove) {
- srcMatrix.rows -= size;
- }
- return newSet;
-}
-
-template<typename T>
-Matrix<T> random_sample(const Matrix<T>& srcMatrix, size_t size)
-{
- UniqueRandom rand((int)srcMatrix.rows);
- Matrix<T> newSet(new T[size * srcMatrix.cols], size,srcMatrix.cols);
-
- T* src,* dest;
- for (size_t i=0; i<size; ++i) {
- long r = rand.next();
- dest = newSet[i];
- src = srcMatrix[r];
- std::copy(src, src+srcMatrix.cols, dest);
- }
- return newSet;
-}
-
-} // namespace
-
-
-#endif /* OPENCV_FLANN_SAMPLING_H_ */