params.h 3.2 KB

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  1. /***********************************************************************
  2. * Software License Agreement (BSD License)
  3. *
  4. * Copyright 2008-2011 Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
  5. * Copyright 2008-2011 David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
  6. *
  7. * Redistribution and use in source and binary forms, with or without
  8. * modification, are permitted provided that the following conditions
  9. * are met:
  10. *
  11. * 1. Redistributions of source code must retain the above copyright
  12. * notice, this list of conditions and the following disclaimer.
  13. * 2. Redistributions in binary form must reproduce the above copyright
  14. * notice, this list of conditions and the following disclaimer in the
  15. * documentation and/or other materials provided with the distribution.
  16. *
  17. * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18. * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19. * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26. * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27. *************************************************************************/
  28. #ifndef OPENCV_FLANN_PARAMS_H_
  29. #define OPENCV_FLANN_PARAMS_H_
  30. //! @cond IGNORED
  31. #include "any.h"
  32. #include "general.h"
  33. #include <iostream>
  34. #include <map>
  35. namespace cvflann
  36. {
  37. typedef std::map<cv::String, any> IndexParams;
  38. struct SearchParams : public IndexParams
  39. {
  40. SearchParams(int checks = 32, float eps = 0, bool sorted = true )
  41. {
  42. // how many leafs to visit when searching for neighbours (-1 for unlimited)
  43. (*this)["checks"] = checks;
  44. // search for eps-approximate neighbours (default: 0)
  45. (*this)["eps"] = eps;
  46. // only for radius search, require neighbours sorted by distance (default: true)
  47. (*this)["sorted"] = sorted;
  48. }
  49. };
  50. template<typename T>
  51. T get_param(const IndexParams& params, cv::String name, const T& default_value)
  52. {
  53. IndexParams::const_iterator it = params.find(name);
  54. if (it != params.end()) {
  55. return it->second.cast<T>();
  56. }
  57. else {
  58. return default_value;
  59. }
  60. }
  61. template<typename T>
  62. T get_param(const IndexParams& params, cv::String name)
  63. {
  64. IndexParams::const_iterator it = params.find(name);
  65. if (it != params.end()) {
  66. return it->second.cast<T>();
  67. }
  68. else {
  69. FLANN_THROW(cv::Error::StsBadArg, cv::String("Missing parameter '")+name+cv::String("' in the parameters given"));
  70. }
  71. }
  72. inline void print_params(const IndexParams& params, std::ostream& stream)
  73. {
  74. IndexParams::const_iterator it;
  75. for(it=params.begin(); it!=params.end(); ++it) {
  76. stream << it->first << " : " << it->second << std::endl;
  77. }
  78. }
  79. inline void print_params(const IndexParams& params)
  80. {
  81. print_params(params, std::cout);
  82. }
  83. }
  84. //! @endcond
  85. #endif /* OPENCV_FLANN_PARAMS_H_ */