EMAN::RealToFFTProcessor Class Reference

This will replace the image with a full-circle 2D fft amplitude rendering. More...

#include <processor.h>

Inheritance diagram for EMAN::RealToFFTProcessor:

Collaboration diagram for EMAN::RealToFFTProcessor:

Public Member Functions
void	process_inplace (EMData *image)
	To process an image in-place. More...
string	get_name () const
	Get the processor's name. More...
string	get_desc () const
	Get the descrition of this specific processor. More...
Public Member Functions inherited from EMAN::Processor
virtual	~Processor ()
virtual EMData *	process (const EMData *const image)
	To proccess an image out-of-place. More...
virtual void	process_list_inplace (vector< EMData * > &images)
	To process multiple images using the same algorithm. More...
virtual Dict	get_params () const
	Get the processor parameters in a key/value dictionary. More...
virtual void	set_params (const Dict &new_params)
	Set the processor parameters using a key/value dictionary. More...
virtual TypeDict	get_param_types () const
	Get processor parameter information in a dictionary. More...

Static Public Member Functions
static Processor *	NEW ()
Static Public Member Functions inherited from EMAN::Processor
static string	get_group_desc ()
	Get the description of this group of processors. More...
static void	EMFourierFilterInPlace (EMData *fimage, Dict params)
	Compute a Fourier-filter processed image in place. More...
static EMData *	EMFourierFilter (EMData *fimage, Dict params)
	Compute a Fourier-processor processed image without altering the original image. More...

Static Public Attributes
static const string	NAME = "math.realtofft"

Additional Inherited Members
Public Types inherited from EMAN::Processor
enum	fourier_filter_types {   TOP_HAT_LOW_PASS , TOP_HAT_HIGH_PASS , TOP_HAT_BAND_PASS , TOP_HOMOMORPHIC ,   GAUSS_LOW_PASS , GAUSS_HIGH_PASS , GAUSS_BAND_PASS , GAUSS_INVERSE ,   GAUSS_HOMOMORPHIC , BUTTERWORTH_LOW_PASS , BUTTERWORTH_HIGH_PASS , BUTTERWORTH_HOMOMORPHIC ,   KAISER_I0 , KAISER_SINH , KAISER_I0_INVERSE , KAISER_SINH_INVERSE ,   SHIFT , TANH_LOW_PASS , TANH_HIGH_PASS , TANH_HOMOMORPHIC ,   TANH_BAND_PASS , RADIAL_TABLE , CTF_ }
	Fourier filter Processor type enum. More...
Protected Attributes inherited from EMAN::Processor
Dict	params

Detailed Description

This will replace the image with a full-circle 2D fft amplitude rendering.

Definition at line 5362 of file processor.h.

Member Function Documentation

get_desc()

string EMAN::RealToFFTProcessor::get_desc ( ) const

inlinevirtual

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 5377 of file processor.h.

                {
                        return "This will replace the image with a full-circle 2D fft amplitude rendering. Note that this renders amplitude, when intensity is more common.";
                }

get_name()

string EMAN::RealToFFTProcessor::get_name ( ) const

inlinevirtual

Get the processor's name.

Each processor is identified by a unique name.

Returns

The processor's name.

Implements EMAN::Processor.

Definition at line 5367 of file processor.h.

                {
                        return NAME;
                }

References NAME.

Referenced by process_inplace().

NEW()

static Processor * EMAN::RealToFFTProcessor::NEW ( )

inlinestatic

Definition at line 5372 of file processor.h.

                {
                        return new RealToFFTProcessor();
                }

process_inplace()

void RealToFFTProcessor::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 3987 of file processor.cpp.

{
        if (!image) {
                LOGWARN("NULL Image");
                return;
        }
 
        //Note : real image only!
        if(image->is_complex()) {
                LOGERR("%s Processor only operates on real images", get_name().c_str());
                throw ImageFormatException("apply to real image only");
        }
 
        // Note : 2D only!
        int nz = image->get_zsize();
        if (nz > 1) {
                LOGERR("%s Processor doesn't support 3D models", get_name().c_str());
                throw ImageDimensionException("3D model not supported");
        }
 
        EMData *ff=image->do_fft();
        ff->ri2ap();
 
        int nx=image->get_xsize();
        int ny=image->get_ysize();
 
        int x,y;
        float norm=static_cast<float>(nx*ny);
 
        for (y=0; y<ny; y++) image->set_value_at(0,y,0);
 
        for (x=1; x<nx/2; x++) {
                for (y=0; y<ny; y++) {
                        int y2;
                        if (y<ny/2) y2=y+ny/2;
                        else if (y==ny/2) y2=ny;
                        else y2=y-ny/2;
                        image->set_value_at(x,y,ff->get_value_at(nx-x*2,ny-y2)/norm);
                }
        }
 
        for (x=nx/2; x<nx; x++) {
                for (y=0; y<ny; y++) {
                        int y2;
                        if (y<ny/2) y2=y+ny/2;
                        else y2=y-ny/2;
                        image->set_value_at(x,y,ff->get_value_at(x*2-nx,y2)/norm);
                }
        }
 
        image->update();
        if( ff )
        {
                delete ff;
                ff = 0;
        }
}

References get_name(), ImageDimensionException, ImageFormatException, LOGERR, LOGWARN, x, and y.

Member Data Documentation

NAME

const string RealToFFTProcessor::NAME = "math.realtofft"

static

Definition at line 5382 of file processor.h.

Referenced by get_name().

---

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

• processor.h
• processor.cpp