EMAN::RadialProcessor Class Reference

Perform a multiplication of real image with a radial table. More...

#include <processor.h>

Inheritance diagram for EMAN::RadialProcessor:

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Collaboration diagram for EMAN::RadialProcessor:

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List of all members.

Public Member Functions

void process_inplace (EMData *image)
 To process an image in-place.
string get_name () const
 Get the processor's name.
TypeDict get_param_types () const
 Get processor parameter information in a dictionary.
string get_desc () const
 Get the descrition of this specific processor.

Static Public Member Functions

static ProcessorNEW ()

Static Public Attributes

static const string NAME = "mask.radialprofile"

Detailed Description

Perform a multiplication of real image with a radial table.

Parameters:
table a radial table for multiplication
Exceptions:
ImageFormatException this filter only apply to real image

Definition at line 6861 of file processor.h.


Member Function Documentation

string EMAN::RadialProcessor::get_desc (  )  const [inline, virtual]

Get the descrition of this specific processor.

This function must be overwritten by a subclass.

Returns:
The description of this processor.

Implements EMAN::Processor.

Definition at line 6883 of file processor.h.

06884                 {
06885                         return "Multiply a real-space image by a radial function. 1 value / pixel, extending to corner. Missing values -> 0.";
06886                 }

string EMAN::RadialProcessor::get_name (  )  const [inline, virtual]

Get the processor's name.

Each processor is identified by a unique name.

Returns:
The processor's name.

Implements EMAN::Processor.

Definition at line 6866 of file processor.h.

References NAME.

Referenced by process_inplace().

06867                 {
06868                         return NAME;
06869                 }

TypeDict EMAN::RadialProcessor::get_param_types (  )  const [inline, virtual]

Get processor parameter information in a dictionary.

Each parameter has one record in the dictionary. Each record contains its name, data-type, and description.

Returns:
A dictionary containing the parameter info.

Reimplemented from EMAN::Processor.

Definition at line 6876 of file processor.h.

References EMAN::EMObject::FLOATARRAY, and EMAN::TypeDict::put().

06877                 {
06878                         TypeDict d;
06879                         d.put("table", EMObject::FLOATARRAY, "Radial array of floats, 1 float/pixel");
06880                         return d;
06881                 }

static Processor* EMAN::RadialProcessor::NEW (  )  [inline, static]

Definition at line 6871 of file processor.h.

06872                 {
06873                         return new RadialProcessor();
06874                 }

void RadialProcessor::process_inplace ( EMData image  )  [virtual]

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.

Parameters:
image The image to be processed.

Implements EMAN::Processor.

Definition at line 8267 of file processor.cpp.

References get_name(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), ImageFormatException, EMAN::EMData::is_complex(), LOGERR, LOGWARN, EMAN::Processor::params, EMAN::Dict::size(), sqrt(), and EMAN::EMData::update().

08268 {
08269         if (!image) {
08270                 LOGWARN("NULL Image");
08271                 return;
08272         }
08273 
08274         //Note : real image only!
08275         if(image->is_complex()) {
08276                 LOGERR("%s Processor only operates on real images", get_name().c_str());
08277                 throw ImageFormatException("apply to real image only");
08278         }
08279 
08280         vector<float> table = params["table"];
08281         vector<float>::size_type tsize = table.size();
08282 
08283         int nx = image->get_xsize();
08284         int ny = image->get_ysize();
08285         int nz = image->get_zsize();
08286 
08287         int nx2 = nx / 2;
08288         int ny2 = ny / 2;
08289         int nz2 = nz / 2;
08290         float sz[3];
08291         sz[0] = static_cast<float>(nx2);
08292         sz[1] = static_cast<float>(ny2);
08293         sz[2] = static_cast<float>(nz2);
08294         float szmax = *std::max_element(&sz[0], &sz[3]);
08295         float maxsize;
08296         if(nz>1) {
08297                 maxsize = (float)(1.8f * szmax);
08298         }
08299         else{
08300                 maxsize = (float)(1.5f * szmax);
08301         }
08302         for(int i=tsize+1; i<maxsize; i++) {
08303                 table.push_back(0.0f);
08304         }
08305 
08306         float dx = 1.0f / (float)nx;
08307         float dy = 1.0f / (float)ny;
08308         float dz = 1.0f / (float)nz;
08309         float dx2 = dx * dx;
08310         float dy2 = dy * dy;
08311         float dz2 = dz * dz;
08312         int iz, iy, ix, jz, jy, jx;
08313         float argx, argy, argz;
08314         float rf, df, f;
08315         int ir;
08316         for(iz=1; iz<=nz; iz++) {
08317                 jz = iz - 1;
08318                 if(jz > nz2) {
08319                         jz -= nz;
08320                 }
08321                 argz = float(jz*jz) * dz2;
08322 
08323                 for(iy=1; iy<=ny; iy++) {
08324                         jy = iy - 1;
08325                         if(jy > ny2) {
08326                                 jy -= ny;
08327                         }
08328                         argy = argz + float(jy*jy) * dy2;
08329 
08330                         for(ix=1; ix<=nx; ix++) {
08331                                 jx = ix -1;
08332                                 argx = argy + float(jx*jx)*dx2;
08333 
08334                                 rf = sqrt(argx)*2.0f*nx2;
08335                                 ir = int(rf);
08336                                 df = rf - float(ir);
08337                                 f = table[ir] + df*(table[ir+1]-table[ir]);
08338 
08339                                 (*image)(ix-1,iy-1,iz-1) *= f;
08340                         }
08341                 }
08342         }
08343 
08344         image->update();
08345 }


Member Data Documentation

const string RadialProcessor::NAME = "mask.radialprofile" [static]

Definition at line 6888 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
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