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 3265 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 3287 of file processor.h.

03288                 {
03289                         return "Block processor, val1 is dx/dy, val2 is lp freq cutoff in pixels. Mystery processor.";
03290                 }

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 3270 of file processor.h.

References NAME.

Referenced by process_inplace().

03271                 {
03272                         return NAME;
03273                 }

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 3279 of file processor.h.

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

03280                 {
03281                         TypeDict d;
03282                         d.put("value1", EMObject::FLOAT, "val1 is dx/dy");
03283                         d.put("value2", EMObject::FLOAT, "val2 is lowpass freq cutoff in pixels");
03284                         return d;
03285                 }

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

Definition at line 3274 of file processor.h.

03275                 {
03276                         return new CutoffBlockProcessor();
03277                 }

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 1863 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.

01864 {
01865         if (!image) {
01866                 LOGWARN("NULL Image");
01867                 return;
01868         }
01869         int nz = image->get_zsize();
01870 
01871         if (nz > 1) {
01872                 LOGERR("%s Processor doesn't support 3D", get_name().c_str());
01873                 throw ImageDimensionException("3D model not supported");
01874         }
01875 
01876         int nx = image->get_xsize();
01877         int ny = image->get_ysize();
01878 
01879         float value1 = params["value1"];
01880         float value2 = params["value2"];
01881 
01882         int v1 = (int) value1;
01883         int v2 = (int) value2;
01884         if (v2 > v1 / 2) {
01885                 LOGERR("invalid value2 '%f' in CutoffBlockProcessor", value2);
01886                 return;
01887         }
01888 
01889         if (v2 <= 0) {
01890                 v2 = v1;
01891         }
01892 
01893         float *data = image->get_data();
01894         int y = 0, x = 0;
01895         for (y = 0; y <= ny - v1; y += v1) {
01896                 for (x = 0; x <= nx - v1; x += v1) {
01897 
01898                         EMData *clip = image->get_clip(Region(x, y, v1, v1));
01899                         EMData *fft = clip->do_fft();
01900 
01901                         float *fft_data = fft->get_data();
01902                         float sum = 0;
01903                         int nitems = 0;
01904 
01905                         for (int i = -v2; i < v2; i++) {
01906                                 for (int j = 0; j < v2; j++) {
01907                                         if (j == 0 && i == 0) {
01908                                                 continue;
01909                                         }
01910 
01911 #ifdef  _WIN32
01912                                         if (_hypot(j, i) < value2) {
01913 #else
01914                                         if (hypot(j, i) < value2) {
01915 #endif
01916                                                 int t = j * 2 + (i + v1 / 2) * (v1 + 2);
01917                                                 sum += (fft_data[t] * fft_data[t] + fft_data[t + 1] * fft_data[t + 1]);
01918                                                 nitems++;
01919                                         }
01920                                 }
01921                         }
01922 
01923                         if( clip )
01924                         {
01925                                 delete clip;
01926                                 clip = 0;
01927                         }
01928 
01929                         float mean = sum / nitems;
01930 
01931                         for (int i = y; i < y + v1; i++) {
01932                                 for (int j = x; j < x + v1; j++) {
01933                                         data[i * nx + j] = mean;
01934                                 }
01935                         }
01936                 }
01937         }
01938 
01939         memset(&data[y * nx], 0, (ny - y) * nx * sizeof(float));
01940 
01941         for (int i = 0; i < ny; i++) {
01942                 memset(&data[i * nx + x], 0, (nx - x) * sizeof(float));
01943         }
01944 
01945         image->update();
01946 }


Member Data Documentation

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

Definition at line 3292 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
Generated on Tue Jun 11 12:44:01 2013 for EMAN2 by  doxygen 1.4.7