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Diffstat (limited to 'jni/feature_stab/db_vlvm/db_feature_detection.h')
| -rw-r--r-- | jni/feature_stab/db_vlvm/db_feature_detection.h | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/jni/feature_stab/db_vlvm/db_feature_detection.h b/jni/feature_stab/db_vlvm/db_feature_detection.h deleted file mode 100644 index 68ffcc9ad..000000000 --- a/jni/feature_stab/db_vlvm/db_feature_detection.h +++ /dev/null @@ -1,179 +0,0 @@ -/* - * Copyright (C) 2011 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -/*$Id: db_feature_detection.h,v 1.3 2011/06/17 14:03:30 mbansal Exp $*/ - -#ifndef DB_FEATURE_DETECTION_H -#define DB_FEATURE_DETECTION_H - -/***************************************************************** -* Lean and mean begins here * -*****************************************************************/ -/*! - * \defgroup FeatureDetection Feature Detection - */ -#include "db_utilities.h" -#include "db_utilities_constants.h" -#include <stdlib.h> //for NULL - -/*! - * \class db_CornerDetector_f - * \ingroup FeatureDetection - * \brief Harris corner detector for float images. - * - * This class performs Harris corner extraction on *float* images managed - * with functions in \ref LMImageBasicUtilities. - */ -class DB_API db_CornerDetector_f -{ -public: - db_CornerDetector_f(); - ~db_CornerDetector_f(); - - /*! - * Set parameters and pre-allocate memory. Return an upper bound - * on the number of corners detected in one frame. - * \param im_width width - * \param im_height height - * \param target_nr_corners - * \param nr_horizontal_blocks - * \param nr_vertical_blocks - * \param absolute_threshold - * \param relative_threshold - */ - unsigned long Init(int im_width,int im_height, - int target_nr_corners=DB_DEFAULT_TARGET_NR_CORNERS, - int nr_horizontal_blocks=DB_DEFAULT_NR_FEATURE_BLOCKS, - int nr_vertical_blocks=DB_DEFAULT_NR_FEATURE_BLOCKS, - double absolute_threshold=DB_DEFAULT_ABS_CORNER_THRESHOLD, - double relative_threshold=DB_DEFAULT_REL_CORNER_THRESHOLD); - - /*! - * Detect the corners. - * x_coord and y_coord should be pre-allocated arrays of length returned by Init(). - * \param img row array pointer - * \param x_coord corner locations - * \param y_coord corner locations - * \param nr_corners actual number of corners computed - */ - void DetectCorners(const float * const *img,double *x_coord,double *y_coord,int *nr_corners) const; - void SetAbsoluteThreshold(double a_thresh) { m_a_thresh = a_thresh; }; - void SetRelativeThreshold(double r_thresh) { m_r_thresh = r_thresh; }; -protected: - void Clean(); - unsigned long Start(int im_width,int im_height, - int block_width,int block_height,unsigned long area_factor, - double absolute_threshold,double relative_threshold,int chunkwidth); - - int m_w,m_h,m_cw,m_bw,m_bh; - /*Area factor holds the maximum number of corners to detect - per 10000 pixels*/ - unsigned long m_area_factor,m_max_nr; - double m_a_thresh,m_r_thresh; - float *m_temp_f; - double *m_temp_d; - float **m_strength,*m_strength_mem; -}; -/*! - * \class db_CornerDetector_u - * \ingroup FeatureDetection - * \brief Harris corner detector for byte images. - * - * This class performs Harris corner extraction on *byte* images managed - * with functions in \ref LMImageBasicUtilities. - */ -class DB_API db_CornerDetector_u -{ -public: - db_CornerDetector_u(); - virtual ~db_CornerDetector_u(); - - /*! - Copy ctor duplicates settings. - Memory is not copied. - */ - db_CornerDetector_u(const db_CornerDetector_u& cd); - /*! - Assignment optor duplicates settings. - Memory not copied. - */ - db_CornerDetector_u& operator=(const db_CornerDetector_u& cd); - - /*! - * Set parameters and pre-allocate memory. Return an upper bound - * on the number of corners detected in one frame - */ - virtual unsigned long Init(int im_width,int im_height, - int target_nr_corners=DB_DEFAULT_TARGET_NR_CORNERS, - int nr_horizontal_blocks=DB_DEFAULT_NR_FEATURE_BLOCKS, - int nr_vertical_blocks=DB_DEFAULT_NR_FEATURE_BLOCKS, - double absolute_threshold=DB_DEFAULT_ABS_CORNER_THRESHOLD, - double relative_threshold=DB_DEFAULT_REL_CORNER_THRESHOLD); - - /*! - * Detect the corners. - * Observe that the image should be overallocated by at least 256 bytes - * at the end. - * x_coord and y_coord should be pre-allocated arrays of length returned by Init(). - * Specifying image mask will restrict corner output to foreground regions. - * Foreground value can be specified using fgnd. By default any >0 mask value - * is considered to be foreground - * \param img row array pointer - * \param x_coord corner locations - * \param y_coord corner locations - * \param nr_corners actual number of corners computed - * \param msk row array pointer to mask image - * \param fgnd foreground value in the mask - */ - virtual void DetectCorners(const unsigned char * const *img,double *x_coord,double *y_coord,int *nr_corners, - const unsigned char * const * msk=NULL, unsigned char fgnd=255) const; - - /*! - Set absolute feature threshold - */ - virtual void SetAbsoluteThreshold(double a_thresh) { m_a_thresh = a_thresh; }; - /*! - Set relative feature threshold - */ - virtual void SetRelativeThreshold(double r_thresh) { m_r_thresh = r_thresh; }; - - /*! - Extract corners from a pre-computed strength image. - \param strength Harris strength image - \param x_coord corner locations - \param y_coord corner locations - \param nr_corners actual number of corners computed - */ - virtual void ExtractCorners(float ** strength, double *x_coord, double *y_coord, int *nr_corners); -protected: - virtual void Clean(); - /*The absolute threshold to this function should be 16.0 times - normal*/ - unsigned long Start(int im_width,int im_height, - int block_width,int block_height,unsigned long area_factor, - double absolute_threshold,double relative_threshold); - - int m_w,m_h,m_bw,m_bh; - /*Area factor holds the maximum number of corners to detect - per 10000 pixels*/ - unsigned long m_area_factor,m_max_nr; - double m_a_thresh,m_r_thresh; - int *m_temp_i; - double *m_temp_d; - float **m_strength,*m_strength_mem; -}; - -#endif /*DB_FEATURE_DETECTION_H*/ |