IMP::em2d::PolarResamplingParameters Class Reference

#include <IMP/em2d/PolarResamplingParameters.h>

Detailed Description

Class to manage the parameters required for the polar resampling in the rotational_alignment function

Definition at line 24 of file PolarResamplingParameters.h.

Public Member Functions
	PolarResamplingParameters (unsigned int rows, unsigned int cols)
	PolarResamplingParameters (const DoubleMatrix &m)
void	create_maps_for_resampling ()
double	get_angle_step () const
	get the angular step used More...
double	get_ending_radius () const
	Gets the largest radius. More...
bool	get_is_setup () const
unsigned int	get_number_of_angles () const
unsigned int	get_number_of_rings () const
	Get the number of rings (that is, the number of radius values considered) More...
double	get_radius (unsigned int n_ring) const
	Gets the current radius employed for the ring in consideration) More...
double	get_radius_step () const
	Get the step for the radius coordinate. More...
void	get_resampling_map (internal::RowMajorArray< float > &m1) const
	Get the map of the (row, column) coordinates of each sample. More...
double	get_starting_radius () const
	Gets the initial radius of the resampling. More...
void	set_estimated_number_of_angles (unsigned int aprox_value)
void	setup (unsigned int rows, unsigned int cols)
void	show (std::ostream &out) const

Protected Attributes
double	angle_step_
double	ending_radius_
unsigned int	matrix_cols_
unsigned int	matrix_rows_
unsigned int	n_angles_
unsigned int	n_rings_
bool	parameters_set_
internal::RowMajorArray< float >	polar_map_
double	radius_step_
double	starting_radius_

Constructor & Destructor Documentation

IMP::em2d::PolarResamplingParameters::PolarResamplingParameters	(	unsigned int	rows,
		unsigned int	cols
	)

Compute the parameters for a polar resampling from the dimensions of a matrix

Definition at line 33 of file PolarResamplingParameters.h.

IMP::em2d::PolarResamplingParameters::PolarResamplingParameters

(

const DoubleMatrix &

m

)

Compute the parameters for a polar resampling getting the dimensions from the matrix

Parameters

[in]

m

Matrix that is going to be resampled

Definition at line 42 of file PolarResamplingParameters.h.

Member Function Documentation

void IMP::em2d::PolarResamplingParameters::create_maps_for_resampling

(

)

After the number of radius and angles values are set, this function Builds a map of resampling coordinates. This map is very useful for speeding up the resampling (see do_resample_polar())

double IMP::em2d::PolarResamplingParameters::get_angle_step

(

)

const

get the angular step used

Definition at line 110 of file PolarResamplingParameters.h.

double IMP::em2d::PolarResamplingParameters::get_ending_radius

(

)

const

Gets the largest radius.

Definition at line 76 of file PolarResamplingParameters.h.

unsigned int IMP::em2d::PolarResamplingParameters::get_number_of_angles

(

)

const

Gets the number of points that are sampled for the angles remember that this number is usually different to the approximated value that you provide to the function set_estimated_number_of_angles()

Definition at line 107 of file PolarResamplingParameters.h.

unsigned int IMP::em2d::PolarResamplingParameters::get_number_of_rings

(

)

const

Get the number of rings (that is, the number of radius values considered)

Definition at line 91 of file PolarResamplingParameters.h.

double IMP::em2d::PolarResamplingParameters::get_radius

(

unsigned int

n_ring

)

const

Gets the current radius employed for the ring in consideration)

Definition at line 82 of file PolarResamplingParameters.h.

double IMP::em2d::PolarResamplingParameters::get_radius_step

(

)

const

Get the step for the radius coordinate.

Definition at line 113 of file PolarResamplingParameters.h.

void IMP::em2d::PolarResamplingParameters::get_resampling_map

(

internal::RowMajorArray< float > &

m1

)

const

Get the map of the (row, column) coordinates of each sample.

The coordinates are stored as pairs of floats.

Note

For internal use.

Definition at line 131 of file PolarResamplingParameters.h.

double IMP::em2d::PolarResamplingParameters::get_starting_radius

(

)

const

Gets the initial radius of the resampling.

Definition at line 70 of file PolarResamplingParameters.h.

void IMP::em2d::PolarResamplingParameters::set_estimated_number_of_angles

(

unsigned int

aprox_value

)

You give an approximated number of values that you want to use for the resampling, and the function computes the optimal number for an FFT based on this approximated number

Definition at line 99 of file PolarResamplingParameters.h.

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void IMP::em2d::PolarResamplingParameters::setup	(	unsigned int	rows,
		unsigned int	cols
	)

Initialize the internal parameters to generate all the values The class uses a number of radius values for resampling that is optimal to perform FFT during the rotational alignment. The first guess is half the rows and columns

Definition at line 52 of file PolarResamplingParameters.h.

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

• PolarResamplingParameters.h