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 6783 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 6805 of file processor.h.

06806                 {
06807                         return "Multiply a real-space image by a radial function. 1 value / pixel, extending to corner. Missing values -> 0.";
06808                 }

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 6788 of file processor.h.

References NAME.

Referenced by process_inplace().

06789                 {
06790                         return NAME;
06791                 }

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 6798 of file processor.h.

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

06799                 {
06800                         TypeDict d;
06801                         d.put("table", EMObject::FLOATARRAY, "Radial array of floats, 1 float/pixel");
06802                         return d;
06803                 }

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

Definition at line 6793 of file processor.h.

06794                 {
06795                         return new RadialProcessor();
06796                 }

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 8094 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().

08095 {
08096         if (!image) {
08097                 LOGWARN("NULL Image");
08098                 return;
08099         }
08100 
08101         //Note : real image only!
08102         if(image->is_complex()) {
08103                 LOGERR("%s Processor only operates on real images", get_name().c_str());
08104                 throw ImageFormatException("apply to real image only");
08105         }
08106 
08107         vector<float> table = params["table"];
08108         vector<float>::size_type tsize = table.size();
08109 
08110         int nx = image->get_xsize();
08111         int ny = image->get_ysize();
08112         int nz = image->get_zsize();
08113 
08114         int nx2 = nx / 2;
08115         int ny2 = ny / 2;
08116         int nz2 = nz / 2;
08117         float sz[3];
08118         sz[0] = static_cast<float>(nx2);
08119         sz[1] = static_cast<float>(ny2);
08120         sz[2] = static_cast<float>(nz2);
08121         float szmax = *std::max_element(&sz[0], &sz[3]);
08122         float maxsize;
08123         if(nz>1) {
08124                 maxsize = (float)(1.8f * szmax);
08125         }
08126         else{
08127                 maxsize = (float)(1.5f * szmax);
08128         }
08129         for(int i=tsize+1; i<maxsize; i++) {
08130                 table.push_back(0.0f);
08131         }
08132 
08133         float dx = 1.0f / (float)nx;
08134         float dy = 1.0f / (float)ny;
08135         float dz = 1.0f / (float)nz;
08136         float dx2 = dx * dx;
08137         float dy2 = dy * dy;
08138         float dz2 = dz * dz;
08139         int iz, iy, ix, jz, jy, jx;
08140         float argx, argy, argz;
08141         float rf, df, f;
08142         int ir;
08143         for(iz=1; iz<=nz; iz++) {
08144                 jz = iz - 1;
08145                 if(jz > nz2) {
08146                         jz -= nz;
08147                 }
08148                 argz = float(jz*jz) * dz2;
08149 
08150                 for(iy=1; iy<=ny; iy++) {
08151                         jy = iy - 1;
08152                         if(jy > ny2) {
08153                                 jy -= ny;
08154                         }
08155                         argy = argz + float(jy*jy) * dy2;
08156 
08157                         for(ix=1; ix<=nx; ix++) {
08158                                 jx = ix -1;
08159                                 argx = argy + float(jx*jx)*dx2;
08160 
08161                                 rf = sqrt(argx)*2.0f*nx2;
08162                                 ir = int(rf);
08163                                 df = rf - float(ir);
08164                                 f = table[ir] + df*(table[ir+1]-table[ir]);
08165 
08166                                 (*image)(ix-1,iy-1,iz-1) *= f;
08167                         }
08168                 }
08169         }
08170 
08171         image->update();
08172 }


Member Data Documentation

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

Definition at line 6810 of file processor.h.

Referenced by get_name().


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