#include <vdgl_interpolator_linear.h>

Inheritance diagram for vdgl_interpolator_linear:

Public Member Functions
	vdgl_interpolator_linear (vdgl_edgel_chain_sptr chain)
	~vdgl_interpolator_linear ()
virtual short	order () const
	order of interpolation 1=linear, 2 = quadratic, 3 = cubic, ..etc.
double	get_x (double index)
	interpolation 0th degree.
double	get_y (double index)
double	get_grad (double index)
	linearly interpolate the gradient magnitude.
double	get_theta (double index)
	the image gradient direction.
double	get_tangent_angle (double index)
	the geometric tangent angle.
double	get_curvature (double index)
	interpolation 2nd degree.
double	get_length ()
	integral.
double	get_min_x ()
	bounding box.
double	get_max_x ()
double	get_min_y ()
double	get_max_y ()
vsol_point_2d_sptr	closest_point_on_curve (vsol_point_2d_sptr p)
	find closest point on the curve to the input point.
virtual double	distance_curve_to_point (vsol_point_2d_sptr p)
vdgl_edgel_chain_sptr	get_edgel_chain () const
void	touch ()
unsigned long	get_time_stamp () const
bool	older (vul_timestamp const &t) const
bool	older (vul_timestamp const *t) const
void	ref ()
void	unref ()
int	get_references () const
bool	is_referenced () const
Protected Attributes
double	lengthcache_
double	minxcache_
double	maxxcache_
double	minycache_
double	maxycache_
vdgl_edgel_chain_sptr	chain_
unsigned long	timestamp_
Private Member Functions
void	recompute_all ()
void	recompute_length ()
void	recompute_bbox ()

Detailed Description

Definition at line 14 of file vdgl_interpolator_linear.h.

Constructor & Destructor Documentation

vdgl_interpolator_linear::vdgl_interpolator_linear ( vdgl_edgel_chain_sptr chain )

Definition at line 18 of file vdgl_interpolator_linear.cxx.

vdgl_interpolator_linear::~vdgl_interpolator_linear ( )

Definition at line 24 of file vdgl_interpolator_linear.cxx.

Member Function Documentation

vsol_point_2d_sptr vdgl_interpolator_linear::closest_point_on_curve ( vsol_point_2d_sptr p ) [virtual]

find closest point on the curve to the input point.

Implements vdgl_interpolator.

Definition at line 28 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator::distance_curve_to_point ( vsol_point_2d_sptr p ) [virtual, inherited]

Definition at line 10 of file vdgl_interpolator.cxx.

double vdgl_interpolator_linear::get_curvature ( double index ) [virtual]

interpolation 2nd degree.

Implements vdgl_interpolator.

Definition at line 134 of file vdgl_interpolator_linear.cxx.

vdgl_edgel_chain_sptr vdgl_interpolator::get_edgel_chain ( ) const [inline, inherited]

Definition at line 74 of file vdgl_interpolator.h.

double vdgl_interpolator_linear::get_grad ( double index ) [virtual]

linearly interpolate the gradient magnitude.

Implements vdgl_interpolator.

Definition at line 78 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_length ( ) [virtual]

integral.

Implements vdgl_interpolator.

Definition at line 145 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_max_x ( ) [virtual]

Implements vdgl_interpolator.

Definition at line 164 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_max_y ( ) [virtual]

Implements vdgl_interpolator.

Definition at line 182 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_min_x ( ) [virtual]

bounding box.

Implements vdgl_interpolator.

Definition at line 155 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_min_y ( ) [virtual]

Implements vdgl_interpolator.

Definition at line 173 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_tangent_angle ( double index ) [virtual]

the geometric tangent angle.

Compute the angle using two adjacent edgels.

(TargetJr used different computations at internal points and at endpoints For endpoints the geometric tangent was used, but image gradient directions were used for internal points on the chain.) Here we use direct geometric angle computation for all points The image-based directions are likely less accurate

Implements vdgl_interpolator.

Definition at line 113 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_theta ( double index ) [virtual]

the image gradient direction.

linearly interpolate the gradient direction.

Implements vdgl_interpolator.

Definition at line 93 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_x ( double index ) [virtual]

interpolation 0th degree.

Implements vdgl_interpolator.

Definition at line 49 of file vdgl_interpolator_linear.cxx.

double vdgl_interpolator_linear::get_y ( double index ) [virtual]