EMAN2
Public Member Functions | Static Public Member Functions | Static Public Attributes
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>

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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 2927 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 2942 of file processor.h.

                {
                        return "Multiplies image by a 'linear pyramid', 1-(|x-xsize/2|*|y-ysize/2|*4/(xsize*ysize))";
                }
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 2930 of file processor.h.

References NAME.

                {
                        return NAME;
                }
static Processor* EMAN::LinearPyramidProcessor::NEW ( ) [inline, static]

Definition at line 2937 of file processor.h.

                {
                        return new LinearPyramidProcessor();
                }
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:
imageThe image to be processed.

Implements EMAN::Processor.

Definition at line 1192 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.

                                                          {

        if (image->get_zsize()!=1) { throw ImageDimensionException("Only 2-D images supported"); }

        float *d=image->get_data();
        int nx=image->get_xsize();
        int ny=image->get_ysize();

        for (int y=0; y<ny; y++) {
                for (int x=0; x<nx; x++) {
                        int l=x+y*nx;
                        d[l]*=1.0f-abs(x-nx/2)*abs(y-ny/2)*4.0f/(nx*ny);
                }
        }
        image->update();
}

Member Data Documentation

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

Definition at line 2947 of file processor.h.

Referenced by get_name().


The documentation for this class was generated from the following files: