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EMAN::TestImageSinewaveCircular Class Reference

Replace a source image as a circular sine wave in specified wave length. More...

#include <processor.h>

Inheritance diagram for EMAN::TestImageSinewaveCircular:

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Collaboration diagram for EMAN::TestImageSinewaveCircular:

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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.sinewave.circular"

Detailed Description

Replace a source image as a circular sine wave in specified wave length.

Parameters:
wavelength float this value is the d in function |sin(x/d)|
axis char (optional) specify a major axis for asymmetric features
c distance (optional) float between focus and the center of an ellipse
phase degree (optional) phase for sine wave, default is 0

Definition at line 6067 of file processor.h.


Member Function Documentation

virtual string EMAN::TestImageSinewaveCircular::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 6077 of file processor.h.

06078                 {
06079                         return "Replace a source image as a circular sine wave in specified wave length";
06080                 }

virtual string EMAN::TestImageSinewaveCircular::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 6072 of file processor.h.

06073                 {
06074                         return NAME;
06075                 }

virtual TypeDict EMAN::TestImageSinewaveCircular::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 6087 of file processor.h.

References EMAN::TypeDict::put().

06088                 {
06089                         TypeDict d;
06090                         d.put("wavelength", EMObject::FLOAT, "(required)this value is the d in function |sin(x/d)|, unit: pixel");
06091                         d.put("axis", EMObject::STRING, "specify a major axis for asymmetric features");
06092                         d.put("c", EMObject::FLOAT, "distance between focus and the center of an ellipse");
06093                         d.put("phase", EMObject::FLOAT, "(optional)phase for sine wave, default is 0");
06094                         return d;
06095                 }

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

Definition at line 6082 of file processor.h.

06083                 {
06084                         return new TestImageSinewaveCircular();
06085                 }

void TestImageSinewaveCircular::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 7321 of file processor.cpp.

References EMAN::EMData::get_data(), InvalidValueException, nx, ny, phase(), EMAN::TestImageProcessor::preprocess(), sqrt(), and EMAN::EMData::update().

07322 {
07323         preprocess(image);
07324 
07325         float wavelength = params["wavelength"];
07326         string axis = (const char*)params["axis"];
07327         float c = params["c"];
07328         float phase = params["phase"];
07329 
07330         float *dat = image->get_data();
07331         float r; //this is the distance of pixel from the image center(nx/2, ny/2, nz/2)
07332         float x2, y2, z2; //this is the coordinates of this pixel from image center
07333         for (int k = 0; k < nz; ++k) {
07334                 for (int j = 0; j < ny; ++j) {
07335                         for (int i = 0; i < nx; ++i, ++dat) {
07336                                 x2 = (float)( i - nx/2 );
07337                                 y2 = (float)( j - ny/2 );
07338                                 z2 = (float)( k - nz/2 );
07339                                 if(axis == ""){
07340                                         r = (float)sqrt(x2*x2+y2*y2+z2*z2);
07341                                 }
07342                                 else if(axis == "x"){
07343                                         float lc = -c;
07344                                         float rc = c;
07345                                         r = ( (float)sqrt((x2-lc)*(x2-lc)+y2*y2+z2*z2) +
07346                                                   (float)sqrt((x2-rc)*(x2-rc)+y2*y2+z2*z2) ) /2.0f - c;
07347                                 }
07348                                 else if(axis == "y"){
07349                                         float lc = -c;
07350                                         float rc = c;
07351                                         r = ( (float)sqrt(x2*x2+(y2-lc)*(y2-lc)+z2*z2) +
07352                                                   (float)sqrt(x2*x2+(y2-rc)*(y2-rc)+z2*z2) ) /2.0f - c;
07353                                 }
07354                                 else if(axis == "z"){
07355                                         if( nz == 1 ){
07356                                                 throw InvalidValueException(0, "This is a 2D image, no asymmetric feature for z axis");
07357                                         }
07358                                         float lc = -c;
07359                                         float rc = c;
07360                                         r = ( (float)sqrt(x2*x2+y2*y2+(z2-lc)*(z2-lc)) +
07361                                                   (float)sqrt(x2*x2+y2*y2+(z2-rc)*(z2-rc)) ) /2.0f - c;
07362                                 }
07363                                 else{
07364                                         throw InvalidValueException(0, "please specify a valid axis for asymmetric features");
07365                                 }
07366                                 *dat = sin( r * (2.0f*M_PI/wavelength) - phase*180/M_PI);
07367                         }
07368                 }
07369         }
07370 
07371         image->update();
07372 }


Member Data Documentation

const string TestImageSinewaveCircular::NAME = "testimage.sinewave.circular" [static]
 

Definition at line 197 of file processor.cpp.


The documentation for this class was generated from the following files:
Generated on Thu Dec 9 13:48:23 2010 for EMAN2 by  doxygen 1.3.9.1