Point Cloud Library (PCL)  1.9.1
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feature_handler.h
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37 
38 #ifndef PCL_ML_DT_FEATURE_HANDLER_H_
39 #define PCL_ML_DT_FEATURE_HANDLER_H_
40 
41 #include <pcl/common/common.h>
42 
43 #include <vector>
44 #include <ostream>
45 
46 namespace pcl
47 {
48 
49  /** \brief Utility class interface which is used for creating and evaluating features. */
50  template <
51  class FeatureType,
52  class DataSet,
53  class ExampleIndex >
54  class PCL_EXPORTS FeatureHandler
55  {
56  public:
57 
58  /** \brief Destructor. */
59  virtual
61 
62  /** \brief Creates random features.
63  * \param[in] num_of_features The number of random features to create.
64  * \param[out] features The destination for the created features.
65  */
66  virtual void
67  createRandomFeatures (const size_t num_of_features, std::vector<FeatureType> & features) = 0;
68 
69  /** \brief Evaluates a feature on the specified data.
70  * \param[in] feature The features to evaluate.
71  * \param[in] data_set The data set on which the feature is evaluated.
72  * \param[in] examples The examples which specify on which parts of the data set the feature is evaluated.
73  * \param[out] results The destination for the results of the feature evaluation.
74  * \param[out] flags Flags that are supplied together with the results.
75  */
76  virtual void
77  evaluateFeature (const FeatureType & feature,
78  DataSet & data_set,
79  std::vector<ExampleIndex> & examples,
80  std::vector<float> & results,
81  std::vector<unsigned char> & flags) const = 0;
82 
83  /** \brief Evaluates a feature on the specified data.
84  * \param[in] feature The features to evaluate.
85  * \param[in] data_set The data set on which the feature is evaluated.
86  * \param[in] example The examples which specify on which parts of the data set the feature is evaluated.
87  * \param[out] result The destination for the results of the feature evaluation.
88  * \param[out] flag Flags that are supplied together with the results.
89  */
90  virtual void
91  evaluateFeature (const FeatureType & feature,
92  DataSet & data_set,
93  const ExampleIndex & example,
94  float & result,
95  unsigned char & flag) const = 0;
96 
97  /** \brief Generates evaluation code for the specified feature and writes it to the specified stream.
98  * \param[in] feature The feature for which code is generated.
99  * \param[out] stream The destination for the code.
100  */
101  virtual void
102  generateCodeForEvaluation (const FeatureType & feature,
103  ::std::ostream & stream) const = 0;
104 
105  };
106 
107 }
108 
109 #endif
virtual ~FeatureHandler()
Destructor.
This file defines compatibility wrappers for low level I/O functions.
Definition: convolution.h:45
Utility class interface which is used for creating and evaluating features.