EMAN::LinearPyramidProcessor Class Reference

Multiplies image by a 'linear pyramid' 1-(|x-xsize/2|*|y-ysize/2|*4/(xsize*ysize)) This is useful in averaging together boxed out regions with 50% overlap. More...

#include <processor.h>

Inheritance diagram for EMAN::LinearPyramidProcessor:

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List of all members.

Public Member Functions

string get_name () const
 Get the processor's name.
void process_inplace (EMData *image)
 To process an image in-place.
string get_desc () const
 Get the descrition of this specific processor.

Static Public Member Functions

static ProcessorNEW ()

Static Public Attributes

static const string NAME = "math.linearpyramid"

Detailed Description

Multiplies image by a 'linear pyramid' 1-(|x-xsize/2|*|y-ysize/2|*4/(xsize*ysize)) This is useful in averaging together boxed out regions with 50% overlap.

Definition at line 2734 of file processor.h.


Member Function Documentation

string EMAN::LinearPyramidProcessor::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 2749 of file processor.h.

02750                 {
02751                         return "Multiplies image by a 'linear pyramid', 1-(|x-xsize/2|*|y-ysize/2|*4/(xsize*ysize))";
02752                 }

string EMAN::LinearPyramidProcessor::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 2737 of file processor.h.

References NAME.

02738                 {
02739                         return NAME;
02740                 }

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

Definition at line 2744 of file processor.h.

02745                 {
02746                         return new LinearPyramidProcessor();
02747                 }

void LinearPyramidProcessor::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 1050 of file processor.cpp.

References abs, EMAN::EMData::get_data(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), ImageDimensionException, nx, ny, EMAN::EMData::update(), x, and y.

01050                                                           {
01051 
01052         if (image->get_zsize()!=1) { throw ImageDimensionException("Only 2-D images supported"); }
01053 
01054         float *d=image->get_data();
01055         int nx=image->get_xsize();
01056         int ny=image->get_ysize();
01057 
01058         for (int y=0; y<ny; y++) {
01059                 for (int x=0; x<nx; x++) {
01060                         int l=x+y*nx;
01061                         d[l]*=1.0f-abs(x-nx/2)*abs(y-ny/2)*4.0f/(nx*ny);
01062                 }
01063         }
01064         image->update();
01065 }


Member Data Documentation

const string LinearPyramidProcessor::NAME = "math.linearpyramid" [static]

Definition at line 2754 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files:
Generated on Mon Jul 19 12:43:23 2010 for EMAN2 by  doxygen 1.4.7