makes image circularly symmetric. More...

#include <processor.h>

Inheritance diagram for EMAN::RotationalAverageProcessor:

Collaboration diagram for EMAN::RotationalAverageProcessor:

[legend]

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.rotationalaverage"

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

makes image circularly symmetric.

Definition at line 6300 of file processor.h.

Member Function Documentation

◆ get_desc()

string EMAN::RotationalAverageProcessor::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 6315 of file processor.h.

                {
                        return "Makes image circularly/spherically symmetric.";
                }

◆ get_name()

string EMAN::RotationalAverageProcessor::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 6305 of file processor.h.

                {
                        return NAME;
                }

References NAME.

◆ NEW()

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

inlinestatic

Definition at line 6310 of file processor.h.

                {
                        return new RotationalAverageProcessor();
                }

◆ process_inplace()

void RotationalAverageProcessor::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 5595 of file processor.cpp.

{
        int isinten=image->get_attr_default("is_intensity",0);
        if (!image || ((image->is_complex() && image->get_ndim() > 2))){
                LOGWARN("only works on real or 2D intensity images. do nothing.");
                return;
        }
 
        if (image->get_ndim() <= 0 || image->get_ndim() > 3)    throw ImageDimensionException("radial average processor only works for real and 2D intensity images");
 
        float *rdata = image->get_data();
        int nx = image->get_xsize();
        int ny = image->get_ysize();
 
        vector < float >dist = image->calc_radial_dist(nx / 2, 0, 1, 1);
 
        if ((!image->is_complex()) && (isinten == 1)) {
                std::reverse(dist.begin(),dist.end());
        }
 
        float midx = (float)((int)nx/2);
        float midy = (float)((int)ny/2);
 
        size_t c = 0;
        if (image->is_complex() && image->get_ndim() == 2) {
                for (int y = -ny/2; y < ny/2; y++) {
                        for (int x = -ny/2-1; x < nx/2+1; x++) {
                                float r = (float) hypot(x,y);
                                int i = (int) floor(r);
                                r -= i;
                                if (i >= 0 && i < nx / 2 - 1) {
                                        image->set_complex_at(x, y, dist[i] * (1.0f - r) + dist[i + 1] * r);
                                }
                                else if (i < 0) {
                                        image->set_complex_at(x, y, dist[0]);
                                }
                                else {
                                        image->set_complex_at(x, y, 0);
                                }
                        }
                }
        }
        else if (image->get_ndim() == 2) {
                for (int y = 0; y < ny; y++) {
                        for (int x = 0; x < nx; x++, c++) {
                                float r = (float) hypot(x - midx, y - midy);
 
                                int i = (int) floor(r);
                                r -= i;
                                if (i >= 0 && i < nx / 2 - 1) {
                                        rdata[c] = dist[i] * (1.0f - r) + dist[i + 1] * r;
                                }
                                else if (i < 0) {
                                        rdata[c] = dist[0];
                                }
                                else {
                                        rdata[c] = 0;
                                }
                        }
                }
        }
        else if (image->get_ndim() == 3) {
                int nz = image->get_zsize();
                float midz = (float)((int)nz/2);
                float r;
                int i;
                for (int z = 0; z < nz; ++z) {
                        for (int y = 0; y < ny; ++y) {
                                for (int x = 0; x < nx; ++x, ++c) {
 
                                        r = (float) Util::hypot3(x - midx, y - midy, z - midz);
 
                                        i = Util::fast_floor(r);
                                        r -= i;
                                        if (i >= 0 && i < nx / 2 - 1) {
                                                rdata[c] = dist[i] * (1.0f - r) + dist[i + 1] * r;
                                        }
                                        else if (i < 0) {
                                                rdata[c] = dist[0];
                                        }
                                        else {
                                                rdata[c] = 0;
                                        }
                                }
                        }
                }
        }
 
        image->update();
}

References EMAN::EMData::calc_radial_dist(), EMAN::Util::fast_floor(), EMAN::Util::hypot3(), ImageDimensionException, LOGWARN, rdata, x, and y.

Member Data Documentation

◆ NAME

const string RotationalAverageProcessor::NAME = "math.rotationalaverage"

static

Definition at line 6320 of file processor.h.

Referenced by get_name().

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

Public Member Functions

Static Public Member Functions

Static Public Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ get_desc()

◆ get_name()

◆ NEW()

◆ process_inplace()

Member Data Documentation

◆ NAME