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

static ProcessorNEW ()

Static Public Attributes

static 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 3184 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 3206 of file processor.h.

03207                 {
03208                         return "Block processor, val1 is dx/dy, val2 is lp freq cutoff in pixels. Mystery processor.";
03209                 }

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 3189 of file processor.h.

References NAME.

Referenced by process_inplace().

03190                 {
03191                         return NAME;
03192                 }

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 3198 of file processor.h.

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

03199                 {
03200                         TypeDict d;
03201                         d.put("value1", EMObject::FLOAT, "val1 is dx/dy");
03202                         d.put("value2", EMObject::FLOAT, "val2 is lowpass freq cutoff in pixels");
03203                         return d;
03204                 }

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

Definition at line 3193 of file processor.h.

03194                 {
03195                         return new CutoffBlockProcessor();
03196                 }

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 1822 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, mean(), nx, ny, EMAN::Processor::params, t, EMAN::EMData::update(), x, and y.

01823 {
01824         if (!image) {
01825                 LOGWARN("NULL Image");
01826                 return;
01827         }
01828         int nz = image->get_zsize();
01829 
01830         if (nz > 1) {
01831                 LOGERR("%s Processor doesn't support 3D", get_name().c_str());
01832                 throw ImageDimensionException("3D model not supported");
01833         }
01834 
01835         int nx = image->get_xsize();
01836         int ny = image->get_ysize();
01837 
01838         float value1 = params["value1"];
01839         float value2 = params["value2"];
01840 
01841         int v1 = (int) value1;
01842         int v2 = (int) value2;
01843         if (v2 > v1 / 2) {
01844                 LOGERR("invalid value2 '%f' in CutoffBlockProcessor", value2);
01845                 return;
01846         }
01847 
01848         if (v2 <= 0) {
01849                 v2 = v1;
01850         }
01851 
01852         float *data = image->get_data();
01853         int y = 0, x = 0;
01854         for (y = 0; y <= ny - v1; y += v1) {
01855                 for (x = 0; x <= nx - v1; x += v1) {
01856 
01857                         EMData *clip = image->get_clip(Region(x, y, v1, v1));
01858                         EMData *fft = clip->do_fft();
01859 
01860                         float *fft_data = fft->get_data();
01861                         float sum = 0;
01862                         int nitems = 0;
01863 
01864                         for (int i = -v2; i < v2; i++) {
01865                                 for (int j = 0; j < v2; j++) {
01866                                         if (j == 0 && i == 0) {
01867                                                 continue;
01868                                         }
01869 
01870 #ifdef  _WIN32
01871                                         if (_hypot(j, i) < value2) {
01872 #else
01873                                         if (hypot(j, i) < value2) {
01874 #endif
01875                                                 int t = j * 2 + (i + v1 / 2) * (v1 + 2);
01876                                                 sum += (fft_data[t] * fft_data[t] + fft_data[t + 1] * fft_data[t + 1]);
01877                                                 nitems++;
01878                                         }
01879                                 }
01880                         }
01881 
01882                         if( clip )
01883                         {
01884                                 delete clip;
01885                                 clip = 0;
01886                         }
01887 
01888                         float mean = sum / nitems;
01889 
01890                         for (int i = y; i < y + v1; i++) {
01891                                 for (int j = x; j < x + v1; j++) {
01892                                         data[i * nx + j] = mean;
01893                                 }
01894                         }
01895                 }
01896         }
01897 
01898         memset(&data[y * nx], 0, (ny - y) * nx * sizeof(float));
01899 
01900         for (int i = 0; i < ny; i++) {
01901                 memset(&data[i * nx + x], 0, (nx - x) * sizeof(float));
01902         }
01903 
01904         image->update();
01905 }


Member Data Documentation

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

Definition at line 3211 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
Generated on Mon May 2 13:30:24 2011 for EMAN2 by  doxygen 1.4.7