#include <processor.h>
Inheritance diagram for EMAN::AddNoiseProcessor:
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 TypeDict | get_param_types () const |
Get processor parameter information in a dictionary. | |
virtual string | get_desc () const |
Get the descrition of this specific processor. | |
Static Public Member Functions | |
Processor * | NEW () |
Static Public Attributes | |
const string | NAME = "math.addnoise" |
Protected Member Functions | |
virtual float | get_sigma (EMData *) |
noise | noise factor used to generate Gaussian distribution random noise | |
seed | seed for random number generator |
Definition at line 4644 of file processor.h.
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Get the descrition of this specific processor. This function must be overwritten by a subclass.
Implements EMAN::Processor. Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 4667 of file processor.h. 04668 { 04669 return "add noise to an image, image multiply by noise then add a random value"; 04670 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 4649 of file processor.h. 04650 {
04651 return NAME;
04652 }
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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. Definition at line 4659 of file processor.h. References EMAN::TypeDict::put(). 04660 { 04661 TypeDict d; 04662 d.put("noise", EMObject::FLOAT, "noise factor used to generate Gaussian distribution random noise"); 04663 d.put("seed", EMObject::INT, "seed for random number generator"); 04664 return d; 04665 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 4675 of file processor.h. Referenced by process_inplace(). 04676 {
04677 return 1.0;
04678 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 4654 of file processor.h. 04655 { 04656 return new AddNoiseProcessor(); 04657 }
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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 4491 of file processor.cpp. References EMAN::EMData::get_data(), EMAN::Randnum::get_gauss_rand(), get_sigma(), EMAN::EMData::get_size(), EMAN::Dict::has_key(), EMAN::Randnum::Instance(), LOGWARN, EMAN::Randnum::set_seed(), and EMAN::EMData::update(). 04492 { 04493 if (!image) { 04494 LOGWARN("NULL Image"); 04495 return; 04496 } 04497 04498 Randnum * randnum = Randnum::Instance(); 04499 if(params.has_key("seed")) { 04500 randnum->set_seed((int)params["seed"]); 04501 } 04502 04503 float addnoise = params["noise"]; 04504 addnoise *= get_sigma(image); 04505 float *dat = image->get_data(); 04506 04507 for (size_t j = 0; j < image->get_size(); ++j) { 04508 dat[j] += randnum->get_gauss_rand(addnoise, addnoise / 2); 04509 } 04510 04511 image->update(); 04512 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 159 of file processor.cpp. |