EMAN::AmpweightFourierProcessor Class Reference

Multiplies each Fourier pixel by its amplitude. More...

#include <processor.h>

Inheritance diagram for EMAN::AmpweightFourierProcessor:

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Collaboration diagram for EMAN::AmpweightFourierProcessor:

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List of all members.

Public Member Functions

string get_name () const
 Get the processor's name.
void process_inplace (EMData *image)
 To process an image in-place.
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 = "filter.ampweight"

Protected Attributes

EMDatasum
int dosqrt

Detailed Description

Multiplies each Fourier pixel by its amplitude.

Parameters:
sum Adds the weights to sum for normalization
sqrt Weights using sqrt of the amplitude if set

Definition at line 443 of file processor.h.


Member Function Documentation

string EMAN::AmpweightFourierProcessor::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 474 of file processor.h.

00475                 {
00476                         return "Multiplies each Fourier pixel by its amplitude";
00477                 }

string EMAN::AmpweightFourierProcessor::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 446 of file processor.h.

References NAME.

00447                 {
00448                         return NAME;
00449                 }

TypeDict EMAN::AmpweightFourierProcessor::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 461 of file processor.h.

References EMAN::EMObject::EMDATA, EMAN::EMObject::INT, and EMAN::TypeDict::put().

00462                 {
00463                         TypeDict d;
00464                         d.put("sum", EMObject::EMDATA, "Adds the weights to sum for normalization");
00465                         d.put("sqrt", EMObject::INT, "Weights using sqrt of the amplitude if set");
00466                         return d;
00467                 }

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

Definition at line 469 of file processor.h.

00470                 {
00471                         return new AmpweightFourierProcessor();
00472                 }

void AmpweightFourierProcessor::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 712 of file processor.cpp.

References EMAN::EMData::do_fft(), EMAN::EMData::do_ift(), dosqrt, EMAN::EMData::get_data(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), EMAN::EMData::is_complex(), LOGWARN, sum, and EMAN::EMData::update().

00713 {
00714         EMData *fft;
00715         float *fftd;
00716         int f=0;
00717 //      static float sum1=0,sum1a=0;
00718 //      static double sum2=0,sum2a=0;
00719 
00720         if (!image) {
00721                 LOGWARN("NULL Image");
00722                 return;
00723         }
00724 
00725         if (!image->is_complex()) {
00726                 fft = image->do_fft();
00727                 fftd = fft->get_data();
00728                 f=1;
00729         }
00730         else {
00731                 fft=image;
00732                 fftd=image->get_data();
00733         }
00734         float *sumd = NULL;
00735         if (sum) sumd=sum->get_data();
00736 //printf("%d %d    %d %d\n",fft->get_xsize(),fft->get_ysize(),sum->get_xsize(),sum->get_ysize());
00737         size_t n = (size_t)fft->get_xsize()*fft->get_ysize()*fft->get_zsize();
00738         for (size_t i=0; i<n; i+=2) {
00739                 float c;
00740                 if (dosqrt) c=pow(fftd[i]*fftd[i]+fftd[i+1]*fftd[i+1],0.25f);
00741 #ifdef  _WIN32
00742                 else c = static_cast<float>(_hypot(fftd[i],fftd[i+1]));
00743 #else
00744                 else c = static_cast<float>(hypot(fftd[i],fftd[i+1]));
00745 #endif  //_WIN32
00746                 if (c==0) c=1.0e-30f;   // prevents divide by zero in normalization
00747                 fftd[i]*=c;
00748                 fftd[i+1]*=c;
00749                 if (sumd) { sumd[i]+=c; sumd[i+1]+=0; }
00750 
00751                 // debugging
00752 /*              if (i==290*1+12) {
00753                         sum1+=fftd[i];
00754                         sum2+=fftd[i];
00755                         printf("%f\t%f\t%f\t%f\t%f\t%f\n",sum1,sum2,fftd[i],fftd[i+1],sumd[i],c);
00756                 }
00757                 if (i==290*50+60) {
00758                         sum1a+=fftd[i];
00759                         sum2a+=fftd[i];
00760                         printf("%f\t%f\t%f\t%f\t%f\t%f\n",sum1a,sum2a,fftd[i],fftd[i+1],sumd[i],c);
00761         }*/
00762         }
00763 
00764         if (f) {
00765                 fft->update();
00766                 EMData *ift=fft->do_ift();
00767                 memcpy(image->get_data(),ift->get_data(),n*sizeof(float));
00768                 delete fft;
00769                 delete ift;
00770         }
00771 
00772         sum->update();
00773         image->update();
00774 
00775 }

void EMAN::AmpweightFourierProcessor::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::Processor.

Definition at line 453 of file processor.h.

References dosqrt, EMAN::Processor::params, and sum.

00454                 {
00455                         params = new_params;
00456                         sum = params["sum"];
00457                         dosqrt = params["sqrt"];
00458 //                      printf("%s %f\n",params.keys()[0].c_str(),lowpass);
00459                 }


Member Data Documentation

int EMAN::AmpweightFourierProcessor::dosqrt [protected]

Definition at line 483 of file processor.h.

Referenced by process_inplace(), and set_params().

const string AmpweightFourierProcessor::NAME = "filter.ampweight" [static]

Definition at line 479 of file processor.h.

Referenced by get_name().

EMData* EMAN::AmpweightFourierProcessor::sum [protected]

Definition at line 482 of file processor.h.

Referenced by process_inplace(), and set_params().


The documentation for this class was generated from the following files:
Generated on Thu Nov 17 12:45:49 2011 for EMAN2 by  doxygen 1.4.7