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EMAN::AreaProcessor Class Reference

AreaProcessor use pixel values and coordinates of a real-space square area. More...

#include <processor.h>

Inheritance diagram for EMAN::AreaProcessor:

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Collaboration diagram for EMAN::AreaProcessor:

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List of all members.

Public Member Functions

 AreaProcessor ()
void process_inplace (EMData *image)
 To process an image in-place.
void set_params (const Dict &new_params)
 Set the processor parameters using a key/value dictionary.
TypeDict get_param_types () const
 Get processor parameter information in a dictionary.
string get_desc () const
 Get the descrition of this specific processor.

Protected Member Functions

virtual void process_pixel (float *pixel, float, float, float, float *area_matrix) const
virtual void create_kernel () const =0

Protected Attributes

int areasize
int matrix_size
float * kernel
int nx
int ny
int nz

Detailed Description

AreaProcessor use pixel values and coordinates of a real-space square area.

This is the base class. Specific AreaProcessor needs to implement function create_kernel().

Parameters:
areasize The width of the area to process (not radius)

Definition at line 2820 of file processor.h.


Constructor & Destructor Documentation

EMAN::AreaProcessor::AreaProcessor  )  [inline]
 

Definition at line 2823 of file processor.h.

References nx, and ny.

02823                                :areasize(0), kernel(0), nx(0), ny(0), nz(0)
02824                 {
02825                 }


Member Function Documentation

virtual void EMAN::AreaProcessor::create_kernel  )  const [protected, pure virtual]
 

Implemented in EMAN::LaplacianProcessor, and EMAN::ZeroConstantProcessor.

Referenced by process_inplace().

string EMAN::AreaProcessor::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.

Reimplemented in EMAN::LaplacianProcessor, and EMAN::ZeroConstantProcessor.

Definition at line 2842 of file processor.h.

02843                 {
02844                         return "AreaProcessor use pixel values and coordinates of a real-space square area. This is the base class. Specific AreaProcessor needs to implement function create_kernel().";
02845                 }

TypeDict EMAN::AreaProcessor::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 2835 of file processor.h.

References EMAN::TypeDict::put().

02836                 {
02837                         TypeDict d;
02838                         d.put("areasize", EMObject::INT, "The width of the area to process (not radius)");
02839                         return d;
02840                 }

void AreaProcessor::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 1558 of file processor.cpp.

References areasize, create_kernel(), data, EMAN::EMData::get_data(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), kernel, LOGWARN, matrix(), matrix_size, nx, ny, nz, process_pixel(), EMAN::EMData::update(), x, and y.

01559 {
01560         if (!image) {
01561                 LOGWARN("NULL Image");
01562                 return;
01563         }
01564 
01565         float *data = image->get_data();
01566 
01567         nx = image->get_xsize();
01568         ny = image->get_ysize();
01569         nz = image->get_zsize();
01570 
01571         int n = (areasize - 1) / 2;
01572         matrix_size = areasize * areasize;
01573 
01574         if (nz > 1) {
01575                 matrix_size *= areasize;
01576         }
01577 
01578         float *matrix = new float[matrix_size];
01579         kernel = new float[matrix_size];
01580 
01581         size_t cpysize = areasize * sizeof(float);
01582         size_t start = (nx * ny + nx + 1) * n;
01583 
01584         int xend = nx - n;
01585         int yend = ny - n;
01586 
01587         int zstart = n;
01588         int zend = nz - n;
01589 
01590         int zbox_start = 0;
01591         int zbox_end = areasize;
01592 
01593         if (nz == 1) {
01594                 zstart = 0;
01595                 zend = 1;
01596                 zbox_end = 1;
01597         }
01598 
01599         size_t nsec = (size_t)nx * (size_t)ny;
01600         int box_nsec = areasize * areasize;
01601 
01602         create_kernel();
01603 
01604         size_t total_size = (size_t)nx * (size_t)ny * (size_t)nz;
01605         float *data2 = new float[total_size];
01606         memcpy(data2, data, total_size * sizeof(float));
01607 
01608         size_t k;
01609         for (int z = zstart; z < zend; z++) {
01610                 for (int y = n; y < yend; y++) {
01611                         for (int x = n; x < xend; x++) {
01612 
01613                                 k = (size_t)z * nsec + y * nx + x;
01614 
01615                                 for (int bz = zbox_start; bz < zbox_end; bz++) {
01616                                         for (int by = 0; by < areasize; by++) {
01617                                                 memcpy(&matrix[(size_t)bz * box_nsec + by * areasize],
01618                                                            &data2[k - start + bz * nsec + by * nx], cpysize);
01619                                         }
01620                                 }
01621 
01622                                 process_pixel(&data[k], (float) x, (float) y, (float) z, matrix);
01623                         }
01624                 }
01625         }
01626 
01627         if( matrix )
01628         {
01629                 delete[]matrix;
01630                 matrix = 0;
01631         }
01632 
01633         if( kernel )
01634         {
01635                 delete[]kernel;
01636                 kernel = 0;
01637         }
01638         image->update();
01639 }

virtual void EMAN::AreaProcessor::process_pixel float *  pixel,
float  ,
float  ,
float  ,
float *  area_matrix
const [inline, protected, virtual]
 

Reimplemented in EMAN::ZeroConstantProcessor.

Definition at line 2848 of file processor.h.

Referenced by process_inplace().

02849                 {
02850                         for (int i = 0; i < matrix_size; i++)
02851                         {
02852                                 *pixel += area_matrix[i] * kernel[i];
02853                         }
02854                 }

void EMAN::AreaProcessor::set_params const Dict new_params  )  [inline, virtual]
 

Set the processor parameters using a key/value dictionary.

Parameters:
new_params A dictionary containing the new parameters.

Reimplemented from EMAN::Processor.

Definition at line 2829 of file processor.h.

02830                 {
02831                         params = new_params;
02832                         areasize = params["areasize"];
02833                 }


Member Data Documentation

int EMAN::AreaProcessor::areasize [protected]
 

Definition at line 2858 of file processor.h.

Referenced by process_inplace().

float* EMAN::AreaProcessor::kernel [protected]
 

Definition at line 2860 of file processor.h.

Referenced by process_inplace().

int EMAN::AreaProcessor::matrix_size [protected]
 

Definition at line 2859 of file processor.h.

Referenced by process_inplace().

int EMAN::AreaProcessor::nx [protected]
 

Definition at line 2861 of file processor.h.

Referenced by process_inplace().

int EMAN::AreaProcessor::ny [protected]
 

Definition at line 2862 of file processor.h.

Referenced by process_inplace().

int EMAN::AreaProcessor::nz [protected]
 

Definition at line 2863 of file processor.h.

Referenced by process_inplace().


The documentation for this class was generated from the following files:
Generated on Thu Nov 17 12:46:07 2011 for EMAN2 by  doxygen 1.3.9.1