github.com/kaydxh/golang@v0.0.131/pkg/gocv/cgo/third_path/opencv4/include/opencv2/flann/params.h (about)

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     4   * Copyright 2008-2011  Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
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    28  
    29  
    30  #ifndef OPENCV_FLANN_PARAMS_H_
    31  #define OPENCV_FLANN_PARAMS_H_
    32  
    33  //! @cond IGNORED
    34  
    35  #include "any.h"
    36  #include "general.h"
    37  #include <iostream>
    38  #include <map>
    39  
    40  
    41  namespace cvflann
    42  {
    43  
    44  typedef std::map<cv::String, any> IndexParams;
    45  
    46  struct SearchParams : public IndexParams
    47  {
    48      SearchParams(int checks = 32, float eps = 0, bool sorted = true )
    49      {
    50          init(checks, eps, sorted, false);
    51      }
    52  
    53      SearchParams(int checks, float eps, bool sorted, bool explore_all_trees )
    54      {
    55          init(checks, eps, sorted, explore_all_trees);
    56      }
    57  
    58      void init(int checks = 32, float eps = 0, bool sorted = true, bool explore_all_trees = false )
    59      {
    60          // how many leafs to visit when searching for neighbours (-1 for unlimited)
    61          (*this)["checks"] = checks;
    62          // search for eps-approximate neighbours (default: 0)
    63          (*this)["eps"] = eps;
    64          // only for radius search, require neighbours sorted by distance (default: true)
    65          (*this)["sorted"] = sorted;
    66          // if false, search stops at the tree reaching the number of  max checks (original behavior).
    67          // When true, we do a descent in each tree and. Like before the alternative paths
    68          // stored in the heap are not be processed further when max checks is reached.
    69          (*this)["explore_all_trees"] = explore_all_trees;
    70      }
    71  };
    72  
    73  
    74  template<typename T>
    75  T get_param(const IndexParams& params, cv::String name, const T& default_value)
    76  {
    77      IndexParams::const_iterator it = params.find(name);
    78      if (it != params.end()) {
    79          return it->second.cast<T>();
    80      }
    81      else {
    82          return default_value;
    83      }
    84  }
    85  
    86  template<typename T>
    87  T get_param(const IndexParams& params, cv::String name)
    88  {
    89      IndexParams::const_iterator it = params.find(name);
    90      if (it != params.end()) {
    91          return it->second.cast<T>();
    92      }
    93      else {
    94          FLANN_THROW(cv::Error::StsBadArg, cv::String("Missing parameter '")+name+cv::String("' in the parameters given"));
    95      }
    96  }
    97  
    98  inline void print_params(const IndexParams& params, std::ostream& stream)
    99  {
   100      IndexParams::const_iterator it;
   101  
   102      for(it=params.begin(); it!=params.end(); ++it) {
   103          stream << it->first << " : " << it->second << std::endl;
   104      }
   105  }
   106  
   107  inline void print_params(const IndexParams& params)
   108  {
   109      print_params(params, std::cout);
   110  }
   111  
   112  }
   113  
   114  //! @endcond
   115  
   116  #endif /* OPENCV_FLANN_PARAMS_H_ */