#include <processor.h>
Inheritance diagram for EMAN::FourierProcessor:
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 | |
static string | get_group_desc () |
Get the description of this group of processors. | |
Protected Member Functions | |
virtual void | preprocess (EMData *) |
virtual void | create_radial_func (vector< float > &radial_mask) const =0 |
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 336 of file processor.h.
virtual void EMAN::FourierProcessor::create_radial_func | ( | vector< float > & | radial_mask | ) | const [protected, pure virtual] |
Implemented in EMAN::LinearRampFourierProcessor, EMAN::LinearRampProcessor, EMAN::LoGFourierProcessor, and EMAN::DoGFourierProcessor.
Referenced by process_inplace().
static string EMAN::FourierProcessor::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.
Reimplemented from EMAN::Processor.
Definition at line 341 of file processor.h.
00342 { 00343 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]. "; 00344 }
TypeDict EMAN::FourierProcessor::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.
Reimplemented from EMAN::Processor.
Reimplemented in EMAN::LinearRampProcessor, EMAN::LoGFourierProcessor, and EMAN::DoGFourierProcessor.
Definition at line 346 of file processor.h.
References EMAN::EMObject::FLOAT, and EMAN::TypeDict::put().
00347 { 00348 TypeDict d; 00349 d.put("cutoff_abs", EMObject::FLOAT, "Processor radius in terms of Nyquist (0-.5)"); 00350 d.put("cutoff_pixels", EMObject::FLOAT, " Width in Fourier pixels (0 - size()/2)"); 00351 d.put("cutoff_freq", EMObject::FLOAT, "Resolution in 1/A (0 - 1 / size*apix)"); 00352 d.put("apix", EMObject::FLOAT, " Override A/pix in the image header (changes x,y and z)"); 00353 return d; 00354 }
virtual void EMAN::FourierProcessor::preprocess | ( | EMData * | ) | [inline, protected, virtual] |
void FourierProcessor::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.
image | The image to be processed. |
Implements EMAN::Processor.
Definition at line 540 of file processor.cpp.
References EMAN::EMData::apply_radial_func(), create_radial_func(), EMAN::EMData::do_fft(), EMAN::EMData::do_ift(), FFTRADIALOVERSAMPLE, 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().
00541 { 00542 if (!image) { 00543 LOGWARN("NULL Image"); 00544 return; 00545 } 00546 00547 preprocess(image); 00548 00549 int array_size = FFTRADIALOVERSAMPLE * image->get_ysize(); 00550 float step=0.5f/array_size; 00551 00552 vector < float >yarray(array_size); 00553 00554 create_radial_func(yarray); 00555 00556 if (image->is_complex()) { 00557 image->apply_radial_func(0, step, yarray); 00558 } 00559 else { 00560 EMData *fft = image->do_fft(); 00561 fft->apply_radial_func(0, step, yarray); 00562 EMData *ift = fft->do_ift(); 00563 00564 memcpy(image->get_data(),ift->get_data(),ift->get_xsize()*ift->get_ysize()*ift->get_zsize()*sizeof(float)); 00565 00566 //ift->update(); Unecessary 00567 00568 if( fft ) 00569 { 00570 delete fft; 00571 fft = 0; 00572 } 00573 00574 if( ift ) 00575 { 00576 delete ift; 00577 ift = 0; 00578 } 00579 } 00580 00581 image->update(); 00582 }