vimt_find_peaks.h File Reference

---

Detailed Description

Find peaks in image.

Author:

Tim Cootes, VP (Sept03)

Definition in file vimt_find_peaks.h.

#include <vimt/vimt_image_2d_of.h>

Go to the source code of this file.

Functions
template<class T>
bool	vimt_is_peak_3x3 (const T *im, vcl_ptrdiff_t i_step, vcl_ptrdiff_t j_step)
	True if pixel at *im is strictly above 8 neighbours.
template<class T>
bool	vimt_is_peak (const T *im, int radius, vcl_ptrdiff_t i_step, vcl_ptrdiff_t j_step)
	True if pixel at *im is strictly above its neighbours in a 2*radius+1 neighbourhood.
template<class T>
void	vimt_find_image_peaks_3x3 (vcl_vector< vgl_point_2d< unsigned > > &peaks, const vil_image_view< T > &image, unsigned plane=0, bool clear_list=true)
	Return image co-ordinates of all points in image strictly above their 8 neighbours.
template<class T>
void	vimt_find_image_peaks_3x3 (vcl_vector< vgl_point_2d< unsigned > > &peaks, vcl_vector< T > &peak_value, const vil_image_view< T > &image, unsigned plane=0, bool clear_list=true)
	Return image co-ordinates of all points in image strictly above their 8 neighbours.
template<class T>
void	vimt_find_image_peaks (vcl_vector< vgl_point_2d< unsigned > > &peaks, vcl_vector< T > &peak_value, const vil_image_view< T > &image, unsigned radius=1, unsigned plane=0, bool clear_list=true)
	Return image co-ordinates of all points in image strictly above their neighbours.
template<class T>
void	vimt_find_image_peaks (vcl_vector< vgl_point_2d< unsigned > > &peaks, vcl_vector< T > &peak_value, const vil_image_view< T > &image, T thresh, unsigned radius=1, unsigned plane=0, bool clear_list=true)
	Return image co-ordinates of all points in image strictly above their neighbours.
template<class T>
void	vimt_find_world_peaks_3x3 (vcl_vector< vgl_point_2d< double > > &peaks, const vimt_image_2d_of< T > &image, unsigned plane=0, bool clear_list=true)
	Return world co-ordinates of all points in image strictly above their 8 neighbours.
template<class T>
void	vimt_find_world_peaks_3x3 (vcl_vector< vgl_point_2d< double > > &peak_pos, vcl_vector< T > &peak_value, const vimt_image_2d_of< T > &image, unsigned plane=0, bool clear_list=true)
	Return world co-ordinates of all points in image strictly above their 8 neighbours.
template<class T>
vgl_point_2d< unsigned >	vimt_find_max (const vil_image_view< T > &im, unsigned plane=0)
	Return image co-ordinates of maximum value in image.
template<class T>
vgl_point_2d< double >	vimt_find_max (const vimt_image_2d_of< T > &image, unsigned plane=0)
	Return world co-ordinates of maximum value in image.

---

Function Documentation

template<class T> void vimt_find_image_peaks (  vcl_vector< vgl_point_2d< unsigned > > &  peaks, vcl_vector< T > &  peak_value, const vil_image_view< T > &  image, T  thresh, unsigned  radius = 1, unsigned  plane = 0, bool  clear_list = true )  [inline]

Return image co-ordinates of all points in image strictly above their neighbours. In a 2*radius+1 x 2*radius+1 neighbourhood of pixels (e.g. r=2 equivalent to 5x5; default: r=1) Additionally, only peaks of the value higher than threshold (thresh) are returned. Parameters: peak_value,:  Value at peak clear_list,:  If true (the default) then empty list before adding new examples Definition at line 116 of file vimt_find_peaks.h.

template<class T> void vimt_find_image_peaks (  vcl_vector< vgl_point_2d< unsigned > > &  peaks, vcl_vector< T > &  peak_value, const vil_image_view< T > &  image, unsigned  radius = 1, unsigned  plane = 0, bool  clear_list = true )  [inline]

Return image co-ordinates of all points in image strictly above their neighbours. In a 2*radius+1 x 2*radius+1 neighbourhood of pixels (e.g. r=2 equivalent to 5x5; default: r=1) Parameters: peak_value,:  Value at peak clear_list,:  If true (the default) then empty list before adding new examples Definition at line 88 of file vimt_find_peaks.h.

template<class T> void vimt_find_image_peaks_3x3 (  vcl_vector< vgl_point_2d< unsigned > > &  peaks, vcl_vector< T > &  peak_value, const vil_image_view< T > &  image, unsigned  plane = 0, bool  clear_list = true )  [inline]

Return image co-ordinates of all points in image strictly above their 8 neighbours. Parameters: peak_value,:  Value at peak clear_list,:  If true (the default) then empty list before adding new examples Definition at line 62 of file vimt_find_peaks.h.

template<class T> void vimt_find_image_peaks_3x3 (  vcl_vector< vgl_point_2d< unsigned > > &  peaks, const vil_image_view< T > &  image, unsigned  plane = 0, bool  clear_list = true )  [inline]

Return image co-ordinates of all points in image strictly above their 8 neighbours. Parameters: clear_list,:  If true (the default) then empty list before adding new examples Definition at line 42 of file vimt_find_peaks.h.

template<class T> vgl_point_2d<double> vimt_find_max (  const vimt_image_2d_of< T > &  image, unsigned  plane = 0 )  [inline]

Return world co-ordinates of maximum value in image. (Or first one found if multiple equivalent maxima) Definition at line 221 of file vimt_find_peaks.h.

template<class T> vgl_point_2d<unsigned> vimt_find_max (  const vil_image_view< T > &  im, unsigned  plane = 0 )  [inline]

Return image co-ordinates of maximum value in image. (Or first one found if multiple equivalent maxima) Definition at line 197 of file vimt_find_peaks.h.

template<class T> void vimt_find_world_peaks_3x3 (  vcl_vector< vgl_point_2d< double > > &  peak_pos, vcl_vector< T > &  peak_value, const vimt_image_2d_of< T > &  image, unsigned  plane = 0, bool  clear_list = true )  [inline]

Return world co-ordinates of all points in image strictly above their 8 neighbours. Parameters: peak_pos,:  Position of each peak peak_value,:  Value at peak clear_list,:  If true (the default) then empty list before adding new examples Definition at line 170 of file vimt_find_peaks.h.

template<class T> void vimt_find_world_peaks_3x3 (  vcl_vector< vgl_point_2d< double > > &  peaks, const vimt_image_2d_of< T > &  image, unsigned  plane = 0, bool  clear_list = true )  [inline]

Return world co-ordinates of all points in image strictly above their 8 neighbours. Parameters: clear_list,:  If true (the default) then empty list before adding new examples Definition at line 147 of file vimt_find_peaks.h.

template<class T> bool vimt_is_peak (  const T *  im, int  radius, vcl_ptrdiff_t  i_step, vcl_ptrdiff_t  j_step )  [inline]

True if pixel at *im is strictly above its neighbours in a 2*radius+1 neighbourhood. Definition at line 28 of file vimt_find_peaks.h.

template<class T> bool vimt_is_peak_3x3 (  const T *  im, vcl_ptrdiff_t  i_step, vcl_ptrdiff_t  j_step )  [inline]

True if pixel at *im is strictly above 8 neighbours. Definition at line 13 of file vimt_find_peaks.h.

---