#include <processor.h>
Inheritance diagram for EMAN::TestImageGaussian:
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 | |
Processor * | NEW () |
Static Public Attributes | |
const string | NAME = "testimage.gaussian" |
sigma | sigma value for this Gaussian blob | |
axis | specify a major axis for asymmetric features | |
c | distance between focus and the center of an ellipse |
Definition at line 6169 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 6179 of file processor.h. 06180 { 06181 return "Replace a source image as a Gaussian Blob"; 06182 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 6174 of file processor.h. 06175 {
06176 return NAME;
06177 }
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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 6189 of file processor.h. References EMAN::TypeDict::put(). 06190 { 06191 TypeDict d; 06192 d.put("sigma", EMObject::FLOAT, "sigma value for this Gaussian blob"); 06193 d.put("axis", EMObject::STRING, "specify a major axis for asymmetric features"); 06194 d.put("c", EMObject::FLOAT, "distance between focus and the center of an ellipse"); 06195 return d; 06196 }
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Definition at line 6184 of file processor.h. 06185 { 06186 return new TestImageGaussian(); 06187 }
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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 7195 of file processor.cpp. References EMAN::EMData::get_data(), InvalidValueException, nx, ny, EMAN::TestImageProcessor::preprocess(), sqrt(), and EMAN::EMData::update(). 07196 { 07197 preprocess(image); 07198 07199 float sigma = params["sigma"]; 07200 string axis = (const char*)params["axis"]; 07201 float c = params["c"]; 07202 07203 float *dat = image->get_data(); 07204 float r; //this is the distance of pixel from the image center(nx/2, ny/2, nz/2) 07205 float x2, y2, z2; //this is the coordinates of this pixel from image center 07206 for (int k = 0; k < nz; ++k) { 07207 for (int j = 0; j < ny; ++j) { 07208 for (int i = 0; i < nx; ++i, ++dat) { 07209 x2 = (float)( i - nx/2 ); 07210 y2 = (float)( j - ny/2 ); 07211 z2 = (float)( k - nz/2 ); 07212 07213 if(axis==""){ 07214 r = (float)sqrt(x2*x2+y2*y2+z2*z2); 07215 } 07216 else if(axis == "x"){ 07217 float lc = -c; 07218 float rc = c; 07219 r = ( (float)sqrt((x2-lc)*(x2-lc)+y2*y2+z2*z2) + 07220 (float)sqrt((x2-rc)*(x2-rc)+y2*y2+z2*z2) ) /2.0f - c; 07221 } 07222 else if(axis == "y"){ 07223 float lc = -c; 07224 float rc = c; 07225 r = ( (float)sqrt(x2*x2+(y2-lc)*(y2-lc)+z2*z2) + 07226 (float)sqrt(x2*x2+(y2-rc)*(y2-rc)+z2*z2) ) /2.0f - c; 07227 } 07228 else if(axis == "z"){ 07229 if( nz == 1 ){ 07230 throw InvalidValueException(0, "This is a 2D image, no asymmetric feature for z axis"); 07231 } 07232 float lc = -c; 07233 float rc = c; 07234 r = ( (float)sqrt(x2*x2+y2*y2+(z2-lc)*(z2-lc)) + 07235 (float)sqrt(x2*x2+y2*y2+(z2-rc)*(z2-rc)) ) /2.0f - c; 07236 } 07237 else{ 07238 throw InvalidValueException(0, "please specify a valid axis for asymmetric features"); 07239 } 07240 //the amplitude of the pixel is proportional to the distance of this pixel from the center 07241 *dat = (float)gsl_ran_gaussian_pdf((double)r,(double)sigma); 07242 } 07243 } 07244 } 07245 07246 image->update(); 07247 }
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Definition at line 198 of file processor.cpp. |