Class BowVector

pose_graph/ThirdParty/DBoW/BowVector.h:38–84

Vector of words to represent images

/// Vector of words to represent images
class BowVector : public std::map<WordId, WordValue> {
 public:
  /**
   * Constructor
   */
  BowVector(void);

  /**
   * Destructor
   */
  ~BowVector(void);

  /**
   * Adds a value to a word value existing in the vector, or creates a new
   * word with the given value
   * @param id word id to look for
   * @param v value to create the word with, or to add to existing word
   */
  void addWeight(WordId id, WordValue v);

  /**
   * Adds a word with a value to the vector only if this does not exist yet
   * @param id word id to look for
   * @param v value to give to the word if this does not exist
   */
  void addIfNotExist(WordId id, WordValue v);

  /**
   * L1-Normalizes the values in the vector
   * @param norm_type norm used
   */
  void normalize(LNorm norm_type);

  /**
   * Prints the content of the bow vector
   * @param out stream
   * @param v
   */
  friend std::ostream& operator<<(std::ostream& out, const BowVector& v);

  /**
   * Saves the bow vector as a vector in a matlab file
   * @param filename
   * @param W number of words in the vocabulary
   */
  void saveM(const std::string& filename, size_t W) const;
};

}  // namespace DBoW2