EMAN::MaskGaussProcessor Class Reference

a gaussian falloff to zero, radius is the 1/e of the width. More...

#include <processor.h>

Inheritance diagram for EMAN::MaskGaussProcessor:

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Collaboration diagram for EMAN::MaskGaussProcessor:

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List of all members.

Public Member Functions

string get_name () const
 Get the processor's name.
void set_params (const Dict &new_params)
 Set the processor parameters using a key/value dictionary.
TypeDict get_param_types () const
 Get processor parameter information in a dictionary.
string get_desc () const
 Get the descrition of this specific processor.

Static Public Member Functions

static ProcessorNEW ()

Static Public Attributes

static const string NAME = "mask.gaussian"

Protected Member Functions

void process_dist_pixel (float *pixel, float dist) const

Protected Attributes

float exponent

Detailed Description

a gaussian falloff to zero, radius is the 1/e of the width.

Definition at line 2523 of file processor.h.


Member Function Documentation

string EMAN::MaskGaussProcessor::get_desc (  )  const [inline, virtual]

Get the descrition of this specific processor.

This function must be overwritten by a subclass.

Returns:
The description of this processor.

Reimplemented from EMAN::CircularMaskProcessor.

Definition at line 2551 of file processor.h.

02552                 {
02553                         return "a gaussian falloff to zero, radius is the 1/e of the width. If inner_radius>0, then \
02554 outer radius specifies width of Gaussian starting at inner_radius rather than total radius.";
02555                 }

string EMAN::MaskGaussProcessor::get_name (  )  const [inline, virtual]

Get the processor's name.

Each processor is identified by a unique name.

Returns:
The processor's name.

Implements EMAN::Processor.

Definition at line 2526 of file processor.h.

References NAME.

02527                 {
02528                         return NAME;
02529                 }

TypeDict EMAN::MaskGaussProcessor::get_param_types (  )  const [inline, virtual]

Get processor parameter information in a dictionary.

Each parameter has one record in the dictionary. Each record contains its name, data-type, and description.

Returns:
A dictionary containing the parameter info.

Reimplemented from EMAN::CircularMaskProcessor.

Definition at line 2544 of file processor.h.

References EMAN::EMObject::FLOAT, EMAN::CircularMaskProcessor::get_param_types(), and EMAN::TypeDict::put().

02545                 {
02546                         TypeDict d = CircularMaskProcessor::get_param_types();
02547                         d.put("exponent", EMObject::FLOAT, "The exponent, f in e^-Bs^f. default 2.0, producing a Gaussian");
02548                         return d;
02549                 }

static Processor* EMAN::MaskGaussProcessor::NEW (  )  [inline, static]

Definition at line 2530 of file processor.h.

02531                 {
02532                         return new MaskGaussProcessor();
02533                 }

void EMAN::MaskGaussProcessor::process_dist_pixel ( float *  pixel,
float  dist 
) const [inline, protected, virtual]

Implements EMAN::CircularMaskProcessor.

Definition at line 2561 of file processor.h.

References exponent, EMAN::CircularMaskProcessor::inner_radius, EMAN::CircularMaskProcessor::inner_radius_square, EMAN::CircularMaskProcessor::outer_radius_square, and sqrt().

02562                 {
02563                         if (inner_radius_square>0) {
02564                                 if (dist>inner_radius_square) {
02565                                         if (exponent==2.0f) (*pixel) *= exp(-pow(sqrt(dist)-inner_radius,2.0f) / outer_radius_square);
02566                                         else (*pixel) *= exp(-pow(sqrt(dist)-inner_radius,exponent) / pow((float)outer_radius_square,exponent/2.0f));
02567                                 }
02568                         }
02569                         else {
02570                                 if (exponent==2.0f) (*pixel) *= exp(-dist / outer_radius_square);
02571                                 else (*pixel) *= exp(-pow(dist,exponent/2.0f) / pow((float)outer_radius_square,exponent/2.0f));
02572                         }
02573                 }

void EMAN::MaskGaussProcessor::set_params ( const Dict new_params  )  [inline, virtual]

Set the processor parameters using a key/value dictionary.

Parameters:
new_params A dictionary containing the new parameters.

Reimplemented from EMAN::CircularMaskProcessor.

Definition at line 2535 of file processor.h.

References exponent, EMAN::Processor::params, and EMAN::CircularMaskProcessor::set_params().

02536                 {
02537                         CircularMaskProcessor::set_params(new_params);
02538                         exponent = params["exponent"];
02539                         if (exponent <= 0.0) {
02540                                 exponent = 2.0;
02541                         }
02542                 }


Member Data Documentation

float EMAN::MaskGaussProcessor::exponent [protected]

Definition at line 2560 of file processor.h.

Referenced by process_dist_pixel(), and set_params().

const string MaskGaussProcessor::NAME = "mask.gaussian" [static]

Definition at line 2557 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
Generated on Tue Jul 12 13:48:56 2011 for EMAN2 by  doxygen 1.4.7