EMAN::RotationalSubstractProcessor Class Reference

subtracts circularly symmetric part of an image. More...

#include <processor.h>

Inheritance diagram for EMAN::RotationalSubstractProcessor:

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Collaboration diagram for EMAN::RotationalSubstractProcessor:

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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.

Static Public Member Functions

static ProcessorNEW ()

Static Public Attributes

static const string NAME = "math.rotationalsubtract"

Detailed Description

subtracts circularly symmetric part of an image.

Definition at line 4507 of file processor.h.


Member Function Documentation

virtual string EMAN::RotationalSubstractProcessor::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 4522 of file processor.h.

04523                 {
04524                         return "subtracts circularly/spherically symmetric part of an image.";
04525                 }

virtual string EMAN::RotationalSubstractProcessor::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 4512 of file processor.h.

References NAME.

04513                 {
04514                         return NAME;
04515                 }

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

Definition at line 4517 of file processor.h.

04518                 {
04519                         return new RotationalSubstractProcessor();
04520                 }

void RotationalSubstractProcessor::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 4316 of file processor.cpp.

References EMAN::EMData::calc_radial_dist(), dist(), EMAN::EMData::get_data(), EMAN::EMData::get_ndim(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), ImageDimensionException, EMAN::EMData::is_complex(), LOGWARN, rdata, EMAN::EMData::update(), and x.

04317 {
04318         if (!image || image->is_complex()) {
04319                 LOGWARN("only works on real image. do nothing.");
04320                 return;
04321         }
04322 
04323         if (image->get_ndim() != 2) throw ImageDimensionException("This processor works only for 2D images");
04324 
04325         float *rdata = image->get_data();
04326         int nx = image->get_xsize();
04327         int ny = image->get_ysize();
04328 
04329         vector < float >dist = image->calc_radial_dist(nx / 2, 0, 1,0);
04330 
04331         int c = 0;
04332         for (int y = 0; y < ny; y++) {
04333                 for (int x = 0; x < nx; x++, c++) {
04334 #ifdef  _WIN32
04335                         float r = (float) _hypot(x - nx / 2, y - ny / 2);
04336 #else
04337                         float r = (float) hypot(x - nx / 2, y - ny / 2);
04338 #endif
04339                         int i = (int) floor(r);
04340                         r -= i;
04341                         if (i >= 0 && i < nx / 2 - 1) {
04342                                 rdata[c] -= dist[i] * (1.0f - r) + dist[i + 1] * r;
04343                         }
04344                         else {
04345                                 rdata[c] = 0;
04346                         }
04347                 }
04348         }
04349 
04350         image->update();
04351 }


Member Data Documentation

const string RotationalSubstractProcessor::NAME = "math.rotationalsubtract" [static]

Definition at line 4527 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
Generated on Thu May 3 10:10:29 2012 for EMAN2 by  doxygen 1.4.7