#include <processor.h>
Inheritance diagram for EMAN::TestImageNoiseGauss:
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 string | get_desc () const |
Get the descrition of this specific processor. | |
virtual TypeDict | get_param_types () const |
Get processor parameter information in a dictionary. | |
Static Public Member Functions | |
static Processor * | NEW () |
Static Public Attributes | |
static const string | NAME = "testimage.noise.gauss" |
The testimage classes using random numbers should take an int 'seed' parameter. If this parameter is provided, it will be cast into an unsigned int. This will permit initialization to a known state if desired.
sigma | sigma value of gausian distributed noise, default is 0.5 | |
mean | mean value of gausian distributed noise, default is zero | |
seed | mean value of gausian distributed noise, default is zero |
Definition at line 6525 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. Definition at line 6535 of file processor.h. 06536 { 06537 return "Replace a source image as a random noise, the random value is gaussian distributed"; 06538 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 6530 of file processor.h. References NAME. 06531 { 06532 return NAME; 06533 }
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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 6545 of file processor.h. References EMAN::EMObject::FLOAT, EMAN::EMObject::INT, and EMAN::TypeDict::put(). 06546 { 06547 TypeDict d; 06548 d.put("sigma", EMObject::FLOAT, "sigma value of gausian distributed noise, default is 0.5"); 06549 d.put("mean", EMObject::FLOAT, "mean value of gausian distributed noise, default is zero."); 06550 d.put("seed", EMObject::INT, "the seed for random number generator, default is not to reseed."); 06551 06552 return d; 06553 }
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Definition at line 6540 of file processor.h. 06541 { 06542 return new TestImageNoiseGauss(); 06543 }
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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 7786 of file processor.cpp. References EMAN::EMData::get_data(), EMAN::Randnum::get_gauss_rand(), EMAN::Dict::has_key(), EMAN::Randnum::Instance(), EMAN::Processor::params, EMAN::TestImageProcessor::preprocess(), EMAN::Randnum::set_seed(), and EMAN::EMData::update(). 07787 { 07788 preprocess(image); 07789 07790 float sigma = params["sigma"]; 07791 if (sigma<=0) { sigma = 1.0; } 07792 float mean = params["mean"]; 07793 07794 Randnum * r = Randnum::Instance(); 07795 if (params.has_key("seed")) { 07796 r->set_seed((int)params["seed"]); 07797 } 07798 07799 float *dat = image->get_data(); 07800 size_t size = nx*ny*nz; 07801 for (size_t i=0; i<size; ++i) { 07802 dat[i] = r->get_gauss_rand(mean, sigma); 07803 } 07804 07805 image->update(); 07806 }
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Definition at line 6555 of file processor.h. Referenced by get_name(). |