Main Page | Modules | Namespace List | Class Hierarchy | Alphabetical List | Class List | Directories | File List | Namespace Members | Class Members | File Members

EMAN::TestImagePureGaussian Class Reference

Replace a source image as a strict Gaussian. More...

#include <processor.h>

Inheritance diagram for EMAN::TestImagePureGaussian:

Inheritance graph
[legend]
Collaboration diagram for EMAN::TestImagePureGaussian:

Collaboration graph
[legend]
List of all members.

Public Member Functions

virtual void process_inplace (EMData *image)
 To process an image in-place.
virtual string get_name () const
 Get the processor's name.
virtual string get_desc () const
 Get the descrition of this specific processor.
virtual TypeDict get_param_types () const
 Get processor parameter information in a dictionary.

Static Public Member Functions

ProcessorNEW ()

Static Public Attributes

const string NAME = "testimage.puregaussian"

Detailed Description

Replace a source image as a strict Gaussian.

Parameters:
x_sigma sigma value for this Gaussian blob on x direction
y_sigma sigma value for this Gaussian blob on y direction
z_sigma sigma value for this Gaussian blob on z direction
x_center center for this Gaussian blob on x direction
y_center center for this Gaussian blob on y direction
z_center center for this Gaussian blob on z direction

Definition at line 5612 of file processor.h.


Member Function Documentation

virtual string EMAN::TestImagePureGaussian::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.

Implements EMAN::Processor.

Definition at line 5622 of file processor.h.

05623                 {
05624                         return "Replace a source image as a strict Gaussian ";
05625                 }

virtual string EMAN::TestImagePureGaussian::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 5617 of file processor.h.

05618                 {
05619                         return NAME;
05620                 }

virtual TypeDict EMAN::TestImagePureGaussian::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::Processor.

Definition at line 5632 of file processor.h.

References EMAN::TypeDict::put().

05633                 {
05634                         TypeDict d;
05635                         d.put("x_sigma", EMObject::FLOAT, "sigma value for this Gaussian blob on x direction");
05636                         d.put("y_sigma", EMObject::FLOAT, "sigma value for this Gaussian blob on y direction");
05637                         d.put("z_sigma", EMObject::FLOAT, "sigma value for this Gaussian blob on z direction");
05638                         d.put("x_center", EMObject::FLOAT, "center for this Gaussian blob on x direction" );
05639                         d.put("y_center", EMObject::FLOAT, "center for this Gaussian blob on y direction" );
05640                         d.put("z_center", EMObject::FLOAT, "center for this Gaussian blob on z direction" );
05641                         return d;
05642                 }

Processor* EMAN::TestImagePureGaussian::NEW  )  [inline, static]
 

Definition at line 5627 of file processor.h.

05628                 {
05629                         return new TestImagePureGaussian();
05630                 }

void TestImagePureGaussian::process_inplace EMData image  )  [virtual]
 

To process an image in-place.

For those processors which can only be processed out-of-place, override this function to just print out some error message to remind user call the out-of-place version.

Parameters:
image The image to be processed.

Implements EMAN::Processor.

Definition at line 7138 of file processor.cpp.

References EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), norm(), nx, ny, pi, EMAN::TestImageProcessor::preprocess(), sqrt(), EMAN::EMData::update(), x, and y.

07139 {
07140         preprocess(image);
07141 
07142         float x_sigma = params["x_sigma"];
07143         float y_sigma = params["y_sigma"];
07144         float z_sigma = params["z_sigma"];
07145 
07146         float x_center = params["x_center"];
07147         float y_center = params["y_center"];
07148         float z_center = params["z_center"];
07149 
07150         int nx = image->get_xsize();
07151         int ny = image->get_ysize();
07152         int nz = image->get_zsize();
07153 
07154         float x_twosig2 = 2*x_sigma*x_sigma;
07155         float y_twosig2 = 2*y_sigma*y_sigma;
07156         float z_twosig2 = 2*z_sigma*z_sigma;
07157 
07158         float sr2pi = sqrt( 2.0f*(float)pi );
07159         float norm  = 1.0f/ ( x_sigma*sr2pi );
07160         if (ny > 1) {
07161                 norm *= 1.0f/ ( y_sigma*sr2pi );
07162                 if (nz > 1) norm  *= 1.0f/ ( z_sigma*sr2pi );
07163         }
07164 
07165         float z, y, x, sum, val;
07166         for (int iz=0; iz < nz; ++iz) {
07167                 z = static_cast<float>(iz) - z_center;
07168                 for (int iy=0; iy < ny; ++iy) {
07169                         y = static_cast<float>(iy) - y_center;
07170                         for (int ix=0; ix < nx; ++ix) {
07171                                 x = static_cast<float>(ix) - x_center;
07172                                 sum = x*x/x_twosig2 + y*y/y_twosig2 + z*z/z_twosig2;
07173                                 val = norm*exp(-sum);
07174                                 (*image)(ix,iy,iz) = val;
07175                         }
07176                 }
07177         }
07178         image->update();
07179 }


Member Data Documentation

const string TestImagePureGaussian::NAME = "testimage.puregaussian" [static]
 

Definition at line 185 of file processor.cpp.


The documentation for this class was generated from the following files:
Generated on Thu Dec 9 13:48:18 2010 for EMAN2 by  doxygen 1.3.9.1