#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 4566 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 4589 of file processor.h. 04590 {
04591 return "add noise to an image, image multiply by noise then add a random value";
04592 }
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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 4571 of file processor.h. 04572 {
04573 return NAME;
04574 }
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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 4581 of file processor.h. References EMAN::TypeDict::put(). 04582 {
04583 TypeDict d;
04584 d.put("noise", EMObject::FLOAT, "noise factor used to generate Gaussian distribution random noise");
04585 d.put("seed", EMObject::INT, "seed for random number generator");
04586 return d;
04587 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 4597 of file processor.h. Referenced by process_inplace(). 04598 {
04599 return 1.0;
04600 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 4576 of file processor.h. 04577 {
04578 return new AddNoiseProcessor();
04579 }
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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 4398 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(). 04399 {
04400 if (!image) {
04401 LOGWARN("NULL Image");
04402 return;
04403 }
04404
04405 Randnum * randnum = Randnum::Instance();
04406 if(params.has_key("seed")) {
04407 randnum->set_seed((int)params["seed"]);
04408 }
04409
04410 float addnoise = params["noise"];
04411 addnoise *= get_sigma(image);
04412 float *dat = image->get_data();
04413
04414 for (size_t j = 0; j < image->get_size(); ++j) {
04415 dat[j] += randnum->get_gauss_rand(addnoise, addnoise / 2);
04416 }
04417
04418 image->update();
04419 }
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Reimplemented in EMAN::AddSigmaNoiseProcessor. Definition at line 164 of file processor.cpp. |
1.3.9.1