#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 4642 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 4665 of file processor.h. 04666 { 04667 return "add noise to an image, image multiply by noise then add a random value"; 04668 }
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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 4647 of file processor.h. 04648 {
04649 return NAME;
04650 }
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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 4657 of file processor.h. References EMAN::TypeDict::put(). 04658 { 04659 TypeDict d; 04660 d.put("noise", EMObject::FLOAT, "noise factor used to generate Gaussian distribution random noise"); 04661 d.put("seed", EMObject::INT, "seed for random number generator"); 04662 return d; 04663 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 4673 of file processor.h. Referenced by process_inplace(). 04674 {
04675 return 1.0;
04676 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 4652 of file processor.h. 04653 { 04654 return new AddNoiseProcessor(); 04655 }
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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 4489 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(). 04490 { 04491 if (!image) { 04492 LOGWARN("NULL Image"); 04493 return; 04494 } 04495 04496 Randnum * randnum = Randnum::Instance(); 04497 if(params.has_key("seed")) { 04498 randnum->set_seed((int)params["seed"]); 04499 } 04500 04501 float addnoise = params["noise"]; 04502 addnoise *= get_sigma(image); 04503 float *dat = image->get_data(); 04504 04505 for (size_t j = 0; j < image->get_size(); ++j) { 04506 dat[j] += randnum->get_gauss_rand(addnoise, addnoise / 2); 04507 } 04508 04509 image->update(); 04510 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 159 of file processor.cpp. |