Bspline_xform Class Reference

The Bspline_xform class encapsulates the B-spline coefficients used by native registration and warping algorithms. Information describing the B-spline geometry is held in the base class: Bspline_header. More...

#include <bspline_xform.h>

Inheritance diagram for Bspline_xform:

Public Types
enum	Lut_type { LUT_3D_ALIGNED , LUT_1D_ALIGNED , LUT_1D_UNALIGNED }

Public Member Functions
	SMART_POINTER_SUPPORT (Bspline_xform)
	Bspline_xform ()
	~Bspline_xform ()
void	initialize (float img_origin[3], float img_spacing[3], plm_long img_dim[3], plm_long roi_offset[3], plm_long roi_dim[3], plm_long vox_per_rgn[3], float direction_cosines[9])
void	initialize (const Plm_image_header *pih, const float grid_spac[3])
void	save (const char *filename)
void	fill_coefficients (float val)
void	jitter_if_zero ()
	This function jitters the coefficients if they are all zero. It is used to prevent local minima artifact when optimizing an MI cost function for images with the same geometry.
void	get_volume_header (Volume_header *vh)
Plm_image_header	get_plm_image_header ()
void	log_header ()
Public Member Functions inherited from Bspline_header
	Bspline_header ()
void	set (const float img_origin[3], const float img_spacing[3], const plm_long img_dim[3], const plm_long roi_offset[3], const plm_long roi_dim[3], const plm_long vox_per_rgn[3], const float direction_cosines[9])
void	set (const Plm_image_header *pih, const float grid_spac[3])
void	set_unaligned (const float img_origin[3], const float img_spacing[3], const plm_long img_dim[3], const plm_long roi_offset[3], const plm_long roi_dim[3], const float grid_spac[3], const float direction_cosines[9])
void	set_unaligned (const Plm_image_header *pih, const float grid_spac[3])
void	get_volume_header (Volume_header *vh)

Public Attributes
float *	coeff
Lut_type	lut_type
plm_long *	cidx_lut
plm_long *	c_lut
plm_long *	qidx_lut
float *	q_lut
float *	bx_lut
float *	by_lut
float *	bz_lut
float *	ux_lut
float *	uy_lut
float *	uz_lut
Public Attributes inherited from Bspline_header
float	img_origin [3]
float	img_spacing [3]
plm_long	img_dim [3]
Direction_cosines	dc
plm_long	roi_offset [3]
plm_long	roi_dim [3]
plm_long	vox_per_rgn [3]
float	grid_spac [3]
plm_long	rdims [3]
plm_long	cdims [3]
int	num_knots
int	num_coeff

Protected Member Functions
void	allocate ()

Detailed Description

The Bspline_xform class encapsulates the B-spline coefficients used by native registration and warping algorithms. Information describing the B-spline geometry is held in the base class: Bspline_header.

Member Enumeration Documentation

Lut_type

enum Bspline_xform::Lut_type

Enumerator
LUT_3D_ALIGNED
LUT_1D_ALIGNED
LUT_1D_UNALIGNED

Constructor & Destructor Documentation

Bspline_xform()

Bspline_xform::Bspline_xform

(

)

~Bspline_xform()

Bspline_xform::~Bspline_xform

(

)

Member Function Documentation

allocate()

void Bspline_xform::allocate ( )

protected

Allocate and initialize coefficients and LUTs

fill_coefficients()

void Bspline_xform::fill_coefficients

(

float

val

)

get_plm_image_header()

Plm_image_header Bspline_xform::get_plm_image_header

(

)

get_volume_header()

void Bspline_xform::get_volume_header

(

Volume_header *

vh

)

initialize() [1/2]

void Bspline_xform::initialize	(	const Plm_image_header *	pih,
		const float	grid_spac[3] )

Initialize B-spline geometry and allocate memory for coefficients. This version of the function gets used when creating a B-Spline with a specified grid spacing.

Parameters

pih	The image geometry associated with B-spline
grid_spac	The B-Spline grid spacing (in mm)

initialize() [2/2]

void Bspline_xform::initialize	(	float	img_origin[3],
		float	img_spacing[3],
		plm_long	img_dim[3],
		plm_long	roi_offset[3],
		plm_long	roi_dim[3],
		plm_long	vox_per_rgn[3],
		float	direction_cosines[9] )

Initialize B-spline geometry and allocate memory for coefficients. This version of the function gets used when loading a B-Spline from file.

jitter_if_zero()

void Bspline_xform::jitter_if_zero

(

)

This function jitters the coefficients if they are all zero. It is used to prevent local minima artifact when optimizing an MI cost function for images with the same geometry.

log_header()

void Bspline_xform::log_header

(

)

save()

void Bspline_xform::save

(

const char *

filename

)

SMART_POINTER_SUPPORT()

Bspline_xform::SMART_POINTER_SUPPORT

(

Bspline_xform

)

Member Data Documentation

bx_lut

float* Bspline_xform::bx_lut

by_lut

float* Bspline_xform::by_lut

bz_lut

float* Bspline_xform::bz_lut

c_lut

plm_long* Bspline_xform::c_lut

cidx_lut

plm_long* Bspline_xform::cidx_lut

coeff

float* Bspline_xform::coeff

Array of B-spline coefficients.

lut_type

Lut_type Bspline_xform::lut_type

Choose which kind of LUT is used

q_lut

float* Bspline_xform::q_lut

qidx_lut

plm_long* Bspline_xform::qidx_lut

ux_lut

float* Bspline_xform::ux_lut

uy_lut

float* Bspline_xform::uy_lut

uz_lut

float* Bspline_xform::uz_lut

---

The documentation for this class was generated from the following files:

• src/base/bspline_xform.h
• src/base/bspline_xform.cxx