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EMAN::CutoffBlockProcessor Class Reference

Block processor, val1 is dx/dy, val2 is lp freq cutoff in pixels. More...

#include <processor.h>

Inheritance diagram for EMAN::CutoffBlockProcessor:

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Collaboration diagram for EMAN::CutoffBlockProcessor:

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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

ProcessorNEW ()

Static Public Attributes

const string NAME = "eman1.filter.blockcutoff"

Detailed Description

Block processor, val1 is dx/dy, val2 is lp freq cutoff in pixels.

Mystery processor.

Parameters:
value1 val1 is dx/dy
value2 val2 is lowpass freq cutoff in pixels

Definition at line 3222 of file processor.h.


Member Function Documentation

string EMAN::CutoffBlockProcessor::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 3244 of file processor.h.

03245                 {
03246                         return "Block processor, val1 is dx/dy, val2 is lp freq cutoff in pixels. Mystery processor.";
03247                 }

string EMAN::CutoffBlockProcessor::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 3227 of file processor.h.

Referenced by process_inplace().

03228                 {
03229                         return NAME;
03230                 }

TypeDict EMAN::CutoffBlockProcessor::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 3236 of file processor.h.

References EMAN::TypeDict::put().

03237                 {
03238                         TypeDict d;
03239                         d.put("value1", EMObject::FLOAT, "val1 is dx/dy");
03240                         d.put("value2", EMObject::FLOAT, "val2 is lowpass freq cutoff in pixels");
03241                         return d;
03242                 }

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

Definition at line 3231 of file processor.h.

03232                 {
03233                         return new CutoffBlockProcessor();
03234                 }

void CutoffBlockProcessor::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 1850 of file processor.cpp.

References data, EMAN::EMData::do_fft(), EMAN::EMData::get_clip(), EMAN::EMData::get_data(), get_name(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), ImageDimensionException, LOGERR, LOGWARN, nx, ny, t, EMAN::EMData::update(), x, and y.

01851 {
01852         if (!image) {
01853                 LOGWARN("NULL Image");
01854                 return;
01855         }
01856         int nz = image->get_zsize();
01857 
01858         if (nz > 1) {
01859                 LOGERR("%s Processor doesn't support 3D", get_name().c_str());
01860                 throw ImageDimensionException("3D model not supported");
01861         }
01862 
01863         int nx = image->get_xsize();
01864         int ny = image->get_ysize();
01865 
01866         float value1 = params["value1"];
01867         float value2 = params["value2"];
01868 
01869         int v1 = (int) value1;
01870         int v2 = (int) value2;
01871         if (v2 > v1 / 2) {
01872                 LOGERR("invalid value2 '%f' in CutoffBlockProcessor", value2);
01873                 return;
01874         }
01875 
01876         if (v2 <= 0) {
01877                 v2 = v1;
01878         }
01879 
01880         float *data = image->get_data();
01881         int y = 0, x = 0;
01882         for (y = 0; y <= ny - v1; y += v1) {
01883                 for (x = 0; x <= nx - v1; x += v1) {
01884 
01885                         EMData *clip = image->get_clip(Region(x, y, v1, v1));
01886                         EMData *fft = clip->do_fft();
01887 
01888                         float *fft_data = fft->get_data();
01889                         float sum = 0;
01890                         int nitems = 0;
01891 
01892                         for (int i = -v2; i < v2; i++) {
01893                                 for (int j = 0; j < v2; j++) {
01894                                         if (j == 0 && i == 0) {
01895                                                 continue;
01896                                         }
01897 
01898 #ifdef  _WIN32
01899                                         if (_hypot(j, i) < value2) {
01900 #else
01901                                         if (hypot(j, i) < value2) {
01902 #endif
01903                                                 int t = j * 2 + (i + v1 / 2) * (v1 + 2);
01904                                                 sum += (fft_data[t] * fft_data[t] + fft_data[t + 1] * fft_data[t + 1]);
01905                                                 nitems++;
01906                                         }
01907                                 }
01908                         }
01909 
01910                         if( clip )
01911                         {
01912                                 delete clip;
01913                                 clip = 0;
01914                         }
01915 
01916                         float mean = sum / nitems;
01917 
01918                         for (int i = y; i < y + v1; i++) {
01919                                 for (int j = x; j < x + v1; j++) {
01920                                         data[i * nx + j] = mean;
01921                                 }
01922                         }
01923                 }
01924         }
01925 
01926         memset(&data[y * nx], 0, (ny - y) * nx * sizeof(float));
01927 
01928         for (int i = 0; i < ny; i++) {
01929                 memset(&data[i * nx + x], 0, (nx - x) * sizeof(float));
01930         }
01931 
01932         image->update();
01933 }


Member Data Documentation

const string CutoffBlockProcessor::NAME = "eman1.filter.blockcutoff" [static]
 

Definition at line 128 of file processor.cpp.


The documentation for this class was generated from the following files:
Generated on Tue Jul 12 13:51:07 2011 for EMAN2 by  doxygen 1.3.9.1