EMAN2
Public Member Functions | Static Public Member Functions | Static Public Attributes
EMAN::RotationalSubstractProcessor Class Reference

subtracts circularly symmetric part of an image. More...

#include <processor.h>

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List of all members.

Public Member Functions

virtual void process_inplace (EMData *image)
 To process an image in-place.
virtual string get_name () const
 Get the processor's name.
virtual 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.rotationalsubtract"

Detailed Description

subtracts circularly symmetric part of an image.

Definition at line 4762 of file processor.h.


Member Function Documentation

virtual string EMAN::RotationalSubstractProcessor::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 4777 of file processor.h.

                {
                        return "subtracts circularly/spherically symmetric part of an image.";
                }
virtual string EMAN::RotationalSubstractProcessor::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 4767 of file processor.h.

References NAME.

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

Definition at line 4772 of file processor.h.

                {
                        return new RotationalSubstractProcessor();
                }
void RotationalSubstractProcessor::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 4536 of file processor.cpp.

References EMAN::EMData::calc_radial_dist(), dist(), EMAN::EMData::get_data(), EMAN::EMData::get_ndim(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), ImageDimensionException, EMAN::EMData::is_complex(), LOGWARN, nx, ny, rdata, EMAN::EMData::update(), and x.

{
        if (!image || image->is_complex()) {
                LOGWARN("only works on real image. do nothing.");
                return;
        }

        if (image->get_ndim() != 2) throw ImageDimensionException("This processor works only for 2D 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, 1,0);

        int c = 0;
        for (int y = 0; y < ny; y++) {
                for (int x = 0; x < nx; x++, c++) {
#ifdef  _WIN32
                        float r = (float) _hypot(x - nx / 2, y - ny / 2);
#else
                        float r = (float) hypot(x - nx / 2, y - ny / 2);
#endif
                        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 {
                                rdata[c] = 0;
                        }
                }
        }

        image->update();
}

Member Data Documentation

const string RotationalSubstractProcessor::NAME = "math.rotationalsubtract" [static]

Definition at line 4782 of file processor.h.

Referenced by get_name().


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