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 3128 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 3150 of file processor.h.

03151                 {
03152                         return "Block processor, val1 is dx/dy, val2 is lp freq cutoff in pixels. Mystery processor.";
03153                 }

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 3133 of file processor.h.

References NAME.

Referenced by process_inplace().

03134                 {
03135                         return NAME;
03136                 }

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 3142 of file processor.h.

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

03143                 {
03144                         TypeDict d;
03145                         d.put("value1", EMObject::FLOAT, "val1 is dx/dy");
03146                         d.put("value2", EMObject::FLOAT, "val2 is lowpass freq cutoff in pixels");
03147                         return d;
03148                 }

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

Definition at line 3137 of file processor.h.

03138                 {
03139                         return new CutoffBlockProcessor();
03140                 }

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 1791 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.

01792 {
01793         if (!image) {
01794                 LOGWARN("NULL Image");
01795                 return;
01796         }
01797         int nz = image->get_zsize();
01798 
01799         if (nz > 1) {
01800                 LOGERR("%s Processor doesn't support 3D", get_name().c_str());
01801                 throw ImageDimensionException("3D model not supported");
01802         }
01803 
01804         int nx = image->get_xsize();
01805         int ny = image->get_ysize();
01806 
01807         float value1 = params["value1"];
01808         float value2 = params["value2"];
01809 
01810         int v1 = (int) value1;
01811         int v2 = (int) value2;
01812         if (v2 > v1 / 2) {
01813                 LOGERR("invalid value2 '%f' in CutoffBlockProcessor", value2);
01814                 return;
01815         }
01816 
01817         if (v2 <= 0) {
01818                 v2 = v1;
01819         }
01820 
01821         float *data = image->get_data();
01822         int y = 0, x = 0;
01823         for (y = 0; y <= ny - v1; y += v1) {
01824                 for (x = 0; x <= nx - v1; x += v1) {
01825 
01826                         EMData *clip = image->get_clip(Region(x, y, v1, v1));
01827                         EMData *fft = clip->do_fft();
01828 
01829                         float *fft_data = fft->get_data();
01830                         float sum = 0;
01831                         int nitems = 0;
01832 
01833                         for (int i = -v2; i < v2; i++) {
01834                                 for (int j = 0; j < v2; j++) {
01835                                         if (j == 0 && i == 0) {
01836                                                 continue;
01837                                         }
01838 
01839 #ifdef  _WIN32
01840                                         if (_hypot(j, i) < value2) {
01841 #else
01842                                         if (hypot(j, i) < value2) {
01843 #endif
01844                                                 int t = j * 2 + (i + v1 / 2) * (v1 + 2);
01845                                                 sum += (fft_data[t] * fft_data[t] + fft_data[t + 1] * fft_data[t + 1]);
01846                                                 nitems++;
01847                                         }
01848                                 }
01849                         }
01850 
01851                         if( clip )
01852                         {
01853                                 delete clip;
01854                                 clip = 0;
01855                         }
01856 
01857                         float mean = sum / nitems;
01858 
01859                         for (int i = y; i < y + v1; i++) {
01860                                 for (int j = x; j < x + v1; j++) {
01861                                         data[i * nx + j] = mean;
01862                                 }
01863                         }
01864                 }
01865         }
01866 
01867         memset(&data[y * nx], 0, (ny - y) * nx * sizeof(float));
01868 
01869         for (int i = 0; i < ny; i++) {
01870                 memset(&data[i * nx + x], 0, (nx - x) * sizeof(float));
01871         }
01872 
01873         image->update();
01874 }


Member Data Documentation

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

Definition at line 3155 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
Generated on Thu Mar 10 23:00:26 2011 for EMAN2 by  doxygen 1.4.7