#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 | |
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) 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.
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Implemented in EMAN::LinearRampFourierProcessor, and EMAN::LinearRampProcessor. Referenced by process_inplace(). |
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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 }
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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. Definition at line 346 of file processor.h. References 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 }
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Definition at line 357 of file processor.h. Referenced by process_inplace(). 00357 {}
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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.
Implements EMAN::Processor. Definition at line 528 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(). 00529 { 00530 if (!image) { 00531 LOGWARN("NULL Image"); 00532 return; 00533 } 00534 00535 preprocess(image); 00536 00537 int array_size = FFTRADIALOVERSAMPLE * image->get_ysize(); 00538 float step=0.5f/array_size; 00539 00540 vector < float >yarray(array_size); 00541 00542 create_radial_func(yarray); 00543 00544 if (image->is_complex()) { 00545 image->apply_radial_func(0, step, yarray); 00546 } 00547 else { 00548 EMData *fft = image->do_fft(); 00549 fft->apply_radial_func(0, step, yarray); 00550 EMData *ift = fft->do_ift(); 00551 00552 memcpy(image->get_data(),ift->get_data(),ift->get_xsize()*ift->get_ysize()*ift->get_zsize()*sizeof(float)); 00553 00554 //ift->update(); Unecessary 00555 00556 if( fft ) 00557 { 00558 delete fft; 00559 fft = 0; 00560 } 00561 00562 if( ift ) 00563 { 00564 delete ift; 00565 ift = 0; 00566 } 00567 } 00568 00569 image->update(); 00570 }
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