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EMAN::SymSearchProcessor Class Reference

Identifiy the best symmetry in the given symmetry list for each pixel and then apply the best symmetry to each pixel. More...

#include <processor.h>

Inheritance diagram for EMAN::SymSearchProcessor:

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Collaboration diagram for EMAN::SymSearchProcessor:

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List of all members.

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

ProcessorNEW ()

Static Public Attributes

const string NAME = "misc.symsearch"

Detailed Description

Identifiy the best symmetry in the given symmetry list for each pixel and then apply the best symmetry to each pixel.

Author:
Wen Jiang <wjiang@bcm.tmc.edu>
Date:
2005-1-9
Parameters:
sym[in] the list of symmetries to search
thresh[in] the minimal level of symmetry to be accepted (0-1)
output_symlabel[in] if output the symmetry label map in which the pixel value is the index of symmetry in the symmetry list
symlabel_map[out] the optional return map when output_symlabel=1

Definition at line 5261 of file processor.h.


Member Function Documentation

virtual string EMAN::SymSearchProcessor::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 5271 of file processor.h.

05272                 {
05273                         return "Identifiy the best symmetry in the given symmetry list for each pixel and then apply the best symmetry to each pixel.";
05274                 }

virtual string EMAN::SymSearchProcessor::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 5266 of file processor.h.

05267                 {
05268                         return NAME;
05269                 }

virtual TypeDict EMAN::SymSearchProcessor::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 5281 of file processor.h.

References EMAN::TypeDict::put().

05282                 {
05283                         TypeDict d;
05284                         d.put("sym", EMObject::STRINGARRAY, "the list of symmetries to search");
05285                         d.put("thresh", EMObject::FLOAT, "the minimal level of symmetry to be accepted (0-1)");
05286                         d.put("output_symlabel", EMObject::INT, "if output the symmetry label map in which the pixel value is the index of symmetry in the symmetry list");
05287                         d.put("symlabel_map", EMObject::EMDATA, "the optional return map when output_symlabel=1");
05288                         return d;
05289                 }

Processor* EMAN::SymSearchProcessor::NEW  )  [inline, static]
 

Definition at line 5276 of file processor.h.

05277                 {
05278                         return new SymSearchProcessor();
05279                 }

void SymSearchProcessor::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 5962 of file processor.cpp.

References EMAN::EMData::copy(), data, EMAN::Util::fast_floor(), EMAN::EMData::get_data(), EMAN::Symmetry3D::get_symmetries(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), LOGWARN, nx, ny, EMAN::Dict::put(), EMAN::Dict::size(), t, EMAN::EMData::to_zero(), EMAN::Util::trilinear_interpolate(), v, x, and y.

05963 {
05964         if (!image) {
05965                 LOGWARN("NULL Image");
05966                 return;
05967         }
05968         float thresh = params["thresh"];
05969         int output_symlabel = params["output_symlabel"];
05970 
05971         // set up all the symmetry transforms for all the searched symmetries
05972         const vector<string> sym_list = params["sym"];
05973         int sym_num = sym_list.size();
05974         vector< vector< Transform > > transforms(sym_num);
05975         vector< float* > symvals(sym_num);
05976         for (int i =0; i < sym_num; i++) {
05977                 vector<Transform> sym_transform =  Symmetry3D::get_symmetries(sym_list[i]);
05978                 transforms[i] = sym_transform;
05979                 symvals[i] = new float[sym_transform.size()]; // new float(nsym);
05980         }
05981 
05982         EMData *orig = image->copy();
05983 
05984         image->to_zero();
05985 
05986         int nx= image->get_xsize();
05987         int ny= image->get_ysize();
05988         int nz= image->get_zsize();
05989         int xy = nx * ny;
05990         float * data = image->get_data();
05991         float * sdata = orig->get_data();
05992 
05993         EMData *symlabel = 0;
05994         float * ldata = symlabel->get_data();
05995         if (output_symlabel) {
05996                 symlabel = image->copy();
05997                 symlabel->to_zero();
05998                 ldata = symlabel->get_data();
05999         }
06000 
06001         for (int k = 0; k < nz; k++) {
06002                 for (int j = 0; j < ny; j++) {
06003                         for(int i = 0; i < nx; i++) {
06004                                 size_t index = (size_t)k * nx * ny + j * nx + i;
06005                                 float val = sdata[ index ];
06006                                 float bestmean = val, bestsymlevel = FLT_MAX;
06007                                 int bestsym = 0;
06008                                 for( int sym = 0; sym< sym_num; sym++) {
06009                                         int cur_sym_num = transforms[sym].size();
06010                                         float *symval = symvals[sym];
06011                                         // first find out all the symmetry related location values
06012                                         for( int s = 0; s < cur_sym_num; s++){
06013                                                 Transform r = transforms[sym][s];
06014                                                 float x2 = (float)(r[0][0] * (i-nx/2) + r[0][1] * (j-ny/2) + r[0][2] * (k-nz/2) + nx / 2);
06015                                                 float y2 = (float)(r[1][0] * (i-nx/2) + r[1][1] * (j-ny/2) + r[1][2] * (k-nz/2) + ny / 2);
06016                                                 float z2 = (float)(r[2][0] * (i-nx/2) + r[2][1] * (j-ny/2) + r[2][2] * (k-nz/2) + nz / 2);
06017 
06018                                                 if (x2 >= 0 && y2 >= 0 && z2 >= 0 && x2 < (nx - 1) && y2 < (ny - 1)
06019                                                         && z2 < (nz - 1)) {
06020                                                         float x = (float)Util::fast_floor(x2);
06021                                                         float y = (float)Util::fast_floor(y2);
06022                                                         float z = (float)Util::fast_floor(z2);
06023 
06024                                                         float t = x2 - x;
06025                                                         float u = y2 - y;
06026                                                         float v = z2 - z;
06027 
06028                                                         size_t ii = x + y * nx + z * (size_t)xy;
06029 
06030                                                         symval[s]=
06031                                                                 Util::trilinear_interpolate(sdata[ii], sdata[ii + 1], sdata[ii + nx],
06032                                                                                                                         sdata[ii + nx + 1], sdata[ii + nx * ny],
06033                                                                                                                         sdata[ii + xy + 1], sdata[ii + xy + nx],
06034                                                                                                                         sdata[ii + xy + nx + 1], t, u, v);
06035                                                 }
06036                                                 else {
06037                                                         symval[s] = 0.0 ;
06038                                                 }
06039                                         }
06040                                         float tmean=0, tsigma=0;
06041                                         for( int s = 0; s < cur_sym_num; s++) {
06042                                                 tmean += symval[s];
06043                                                 tsigma += symval[s] * symval[s];
06044                                         }
06045                                         tmean /= cur_sym_num;
06046                                         tsigma = tsigma/cur_sym_num - tmean*tmean;
06047                                         if (tsigma < bestsymlevel ) {
06048                                                 bestsymlevel = tsigma;
06049                                                 bestmean = tmean;
06050                                                 bestsym = sym;
06051                                         }
06052                                 }
06053                                 if ( bestsymlevel > thresh) {
06054                                         if (output_symlabel) ldata[index] = (float)bestsym;
06055                                         data[index] = bestmean;
06056                                 }
06057                                 else {
06058                                         if (output_symlabel) ldata[index] = -1;
06059                                         data[index] = val;
06060                                 }
06061                         }
06062                 }
06063         }
06064         if( orig )
06065         {
06066                 delete orig;
06067                 orig = 0;
06068         }
06069         for (int i =0; i < sym_num; i++) {
06070                 if( symvals[i] )
06071                 {
06072                         delete symvals[i];
06073                         symvals[i] = 0;
06074                 }
06075         }
06076         if (symlabel) params.put("symlabel_map", EMObject(symlabel));
06077 }


Member Data Documentation

const string SymSearchProcessor::NAME = "misc.symsearch" [static]
 

Definition at line 176 of file processor.cpp.


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