/usr/include/shogun/features/LBPPyrDotFeatures.h is in libshogun-dev 1.1.0-4ubuntu2.
This file is owned by root:root, with mode 0o644.
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* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Written (W) 2010 Vojtech Franc, Soeren Sonnenburg
* Copyright (C) 2010 Vojtech Franc, xfrancv@cmp.felk.cvut.cz
* Copyright (C) 2010 Berlin Institute of Technology
*/
#ifndef _LBP_PYR_DOTFEATURES__H__
#define _LBP_PYR_DOTFEATURES__H__
#include <shogun/lib/common.h>
#include <shogun/features/DotFeatures.h>
#include <shogun/features/SimpleFeatures.h>
namespace shogun
{
/** @brief implement DotFeatures for the polynomial kernel
*
* see DotFeatures for further discription
*
*/
class CLBPPyrDotFeatures : public CDotFeatures
{
public:
/** default constructor */
CLBPPyrDotFeatures();
/** constructor
*
* @param images images
* @param num_pyramids
*/
CLBPPyrDotFeatures(CSimpleFeatures<uint32_t>* images, uint16_t num_pyramids);
virtual ~CLBPPyrDotFeatures();
/** copy constructor
*
* not implemented!
*
* @param orig original PolyFeature
*/
CLBPPyrDotFeatures(const CLBPPyrDotFeatures & orig);
/** get dimensions of feature space
*
* @return dimensions of feature space
*/
virtual int32_t get_dim_feature_space() const;
/** get number of non-zero features in vector
*
* @param num index of vector
* @return number of non-zero features in vector
*/
virtual int32_t get_nnz_features_for_vector(int32_t num);
/** get feature type
*
* @return feature type
*/
virtual EFeatureType get_feature_type();
/** get feature class
*
* @return feature class
*/
virtual EFeatureClass get_feature_class();
/** get number of vectors
*
* @return number of vectors
*/
virtual int32_t get_num_vectors() const;
/** compute dot product between vector1 and vector2,
* appointed by their indices
*
* @param vec_idx1 index of first vector
* @param df DotFeatures (of same kind) to compute dot product with
* @param vec_idx2 index of second vector
*/
virtual float64_t dot(int32_t vec_idx1, CDotFeatures* df, int32_t vec_idx2);
/**
*
* @return size
*/
virtual int32_t get_size();
/** iterate over the non-zero features
*
* call get_feature_iterator first, followed by get_next_feature and
* free_feature_iterator to cleanup
*
* @param vector_index the index of the vector over whose components to
* iterate over
* @return feature iterator (to be passed to get_next_feature)
*/
virtual void* get_feature_iterator(int32_t vector_index);
/** iterate over the non-zero features
*
* call this function with the iterator returned by get_first_feature
* and call free_feature_iterator to cleanup
*
* @param index is returned by reference (-1 when not available)
* @param value is returned by reference
* @param iterator as returned by get_first_feature
* @return true if a new non-zero feature got returned
*/
virtual bool get_next_feature(int32_t& index, float64_t& value, void* iterator);
/** clean up iterator
* call this function with the iterator returned by get_first_feature
*
* @param iterator as returned by get_first_feature
*/
virtual void free_feature_iterator(void* iterator);
/** duplicate feature object
*
* @return feature object
*/
CFeatures* duplicate() const;
/**
*
* @return name of class
*/
virtual const char* get_name() const { return "LBPPyrDotFeatures"; }
/** compute dot product of vector with index arg1
* with an given second vector
*
* @param vec_idx1 index of first vector
* @param vec2 second vector
* @param vec2_len length of second vector
*/
virtual float64_t dense_dot(int32_t vec_idx1, const float64_t* vec2, int32_t vec2_len);
/** compute alpha*x+vec2
*
* @param alpha alpha
* @param vec_idx1 index of first vector x
* @param vec2 vec2
* @param vec2_len length of vec2
* @param abs_val if true add the absolute value
*/
virtual void add_to_dense_vec(float64_t alpha, int32_t vec_idx1,
float64_t* vec2, int32_t vec2_len, bool abs_val=false);
protected:
/** lib lbp pyr get dim
* @param nPyramids
*/
uint32_t liblbp_pyr_get_dim(uint16_t nPyramids);
protected:
/** features in original space*/
CSimpleFeatures<uint32_t>* m_feat;
/** img */
uint32_t* img;
/** img nRows */
int32_t img_nRows;
/** img nCols */
int32_t img_nCols;
/** vec nDim */
int32_t vec_nDim;
};
}
#endif /* _LBP_PYR_DOTFEATURES__H__ */
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