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LBPPyrDotFeatures.h
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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Written (W) 2010 Vojtech Franc, Soeren Sonnenburg
00008  * Written (W) 2013 Evangelos Anagnostopoulos
00009  * Copyright (C) 2010 Vojtech Franc, xfrancv@cmp.felk.cvut.cz
00010  * Copyright (C) 2010 Berlin Institute of Technology
00011  */
00012 #ifndef _LBP_PYR_DOTFEATURES__H__
00013 #define _LBP_PYR_DOTFEATURES__H__
00014 
00015 #include <shogun/lib/common.h>
00016 #include <shogun/features/DotFeatures.h>
00017 #include <shogun/features/DenseFeatures.h>
00018 
00019 namespace shogun
00020 {
00027 class CLBPPyrDotFeatures : public CDotFeatures
00028 {
00029     public:
00031         CLBPPyrDotFeatures();
00032 
00041         CLBPPyrDotFeatures(CDenseFeatures<uint32_t>* image_set, int32_t image_w, int32_t image_h,
00042             uint16_t num_pyramids);
00043 
00045         virtual ~CLBPPyrDotFeatures();
00046 
00053         CLBPPyrDotFeatures(const CLBPPyrDotFeatures & orig);
00054 
00059         virtual int32_t get_dim_feature_space() const;
00060 
00066         virtual int32_t get_nnz_features_for_vector(int32_t num);
00067 
00072         virtual EFeatureType get_feature_type() const;
00073 
00078         virtual EFeatureClass get_feature_class() const;
00079 
00084         virtual int32_t get_num_vectors() const;
00085 
00093         virtual float64_t dot(int32_t vec_idx1, CDotFeatures* df, int32_t vec_idx2);
00094 
00104         virtual void* get_feature_iterator(int32_t vector_index);
00105 
00116         virtual bool get_next_feature(int32_t& index, float64_t& value, void* iterator);
00117 
00123         virtual void free_feature_iterator(void* iterator);
00124 
00129         CFeatures* duplicate() const;
00130 
00135         virtual const char* get_name() const { return "LBPPyrDotFeatures"; }
00136 
00144         virtual float64_t dense_dot(int32_t vec_idx1, float64_t* vec2, int32_t vec2_len);
00145 
00154         virtual void add_to_dense_vec(float64_t alpha, int32_t vec_idx1,
00155                 float64_t* vec2, int32_t vec2_len, bool abs_val=false);
00156 
00164         uint32_t* get_image(int32_t index, int32_t& width, int32_t& height);
00165 
00170         SGVector<char> get_transformed_image(int32_t index);
00171     protected:
00172 
00176         uint32_t liblbp_pyr_get_dim(uint16_t nPyramids);
00177 
00184         uint8_t create_lbp_pattern(uint32_t* img, int32_t x, int32_t y);
00185 
00186     private:
00187 
00189         void init(CDenseFeatures<uint32_t>* image_set, int32_t image_w,
00190                 int32_t image_h);
00191 
00192     protected:
00194         CDenseFeatures<uint32_t>* images;
00195 
00197         int32_t image_width;
00198 
00200         int32_t image_height;
00201 
00203         int32_t vec_nDim;
00204 };
00205 }
00206 #endif /* _LBP_PYR_DOTFEATURES__H__  */
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