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EMAN::FourierAnlProcessor Class Reference

Same as FourierProcessor, except first computes the current image radial power spectrum and passes it to the processor (no radial oversampling, number of elements = radius). More...

#include <processor.h>

Inheritance diagram for EMAN::FourierAnlProcessor:

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Collaboration diagram for EMAN::FourierAnlProcessor:

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List of all members.

Public Member Functions

void process_inplace (EMData *image)
 To process an image in-place.
TypeDict get_param_types () const
 Get processor parameter information in a dictionary.

Static Public Member Functions

string get_group_desc ()
 Get the description of this group of processors.

Protected Member Functions

virtual void preprocess (EMData *image)
virtual void create_radial_func (vector< float > &radial_mask, EMData *image) const =0

Detailed Description

Same as FourierProcessor, except first computes the current image radial power spectrum and passes it to the processor (no radial oversampling, number of elements = radius).

Parameters:
cutoff_abs Processor radius in terms of Nyquist (0-.5).
cutoff_pixels Width in Fourier pixels (0 - size()/2).
cutoff_freq Resolution in 1/A (0 - 1 / size*apix).
apix Override A/pix in the image header (changes x,y and z).

Definition at line 368 of file processor.h.


Member Function Documentation

virtual void EMAN::FourierAnlProcessor::create_radial_func vector< float > &  radial_mask,
EMData image
const [protected, pure virtual]
 

Implemented in EMAN::LowpassAutoBProcessor, EMAN::HighpassAutoPeakProcessor, EMAN::MatchSFProcessor, and EMAN::SetSFProcessor.

Referenced by process_inplace().

string EMAN::FourierAnlProcessor::get_group_desc  )  [inline, static]
 

Get the description of this group of processors.

This function is defined in a parent class. It gives a introduction to a group of processors.

Returns:
The description of this group of processors.

Reimplemented from EMAN::Processor.

Definition at line 373 of file processor.h.

00374                 {
00375                         return "Fourier Filter processors are a group of processor in the frequency domain. Before using such processors on an image, the image must be transformed from real space to the fourier space. FourierProcessor class is the base class of fourier space processors. Each specific processor is either a lowpass filter processor, or a highpass filter processor, or neighter. The unit of lowpass and highpass parameters are in terms of Nyquist, valid range is [0,0.5]. ";
00376                 }

TypeDict EMAN::FourierAnlProcessor::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.

Reimplemented in EMAN::LowpassAutoBProcessor, EMAN::MatchSFProcessor, and EMAN::SetSFProcessor.

Definition at line 378 of file processor.h.

References EMAN::TypeDict::put().

00379                 {
00380                         TypeDict d;
00381                         d.put("cutoff_abs", EMObject::FLOAT, "Processor radius in terms of Nyquist (0-.5)");
00382                         d.put("cutoff_pixels", EMObject::FLOAT, " Width in Fourier pixels (0 - size()/2)");
00383                         d.put("cutoff_freq", EMObject::FLOAT, "Resolution in 1/A (0 - 1 / size*apix)");
00384                         d.put("apix", EMObject::FLOAT, " Override A/pix in the image header (changes x,y and z)");
00385                         return d;
00386                 }

virtual void EMAN::FourierAnlProcessor::preprocess EMData image  )  [inline, protected, virtual]
 

Reimplemented in EMAN::LowpassAutoBProcessor, and EMAN::HighpassAutoPeakProcessor.

Definition at line 389 of file processor.h.

Referenced by process_inplace().

00389 {}

void FourierAnlProcessor::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 572 of file processor.cpp.

References EMAN::EMData::apply_radial_func(), EMAN::EMData::calc_radial_dist(), create_radial_func(), EMAN::EMData::do_fft(), EMAN::EMData::do_ift(), EMAN::EMData::get_data(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), EMAN::EMData::is_complex(), LOGWARN, preprocess(), and EMAN::EMData::update().

00573 {
00574         if (!image) {
00575                 LOGWARN("NULL Image");
00576                 return;
00577         }
00578 
00579         preprocess(image);
00580 
00581 //      int array_size = FFTRADIALOVERSAMPLE * image->get_ysize();
00582 //      float step=0.5f/array_size;
00583 //
00584 //      vector < float >yarray(array_size);
00585 
00586 
00587         if (image->is_complex()) {
00588                 vector <float>yarray = image->calc_radial_dist(image->get_ysize()/2,0,1.0,1);
00589                 create_radial_func(yarray,image);
00590                 image->apply_radial_func(0, 0.5f/yarray.size(), yarray);
00591         }
00592         else {
00593                 EMData *fft = image->do_fft();
00594                 vector <float>yarray = fft->calc_radial_dist(fft->get_ysize()/2,0,1.0,1);
00595                 create_radial_func(yarray,image);
00596                 fft->apply_radial_func(0,  0.5f/yarray.size(), yarray,0);               // 4/30/10 stevel turned off interpolation to fix problem with matched filter
00597                 EMData *ift = fft->do_ift();
00598 
00599                 memcpy(image->get_data(),ift->get_data(),ift->get_xsize()*ift->get_ysize()*ift->get_zsize()*sizeof(float));
00600 
00601                 //ift->update(); Unecessary
00602 
00603                 delete fft;
00604                 delete ift;
00605 
00606         }
00607 
00608         image->update();
00609 }


The documentation for this class was generated from the following files:
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