#include <processor.h>
Inheritance diagram for EMAN::RealToFFTProcessor:
Public Member Functions | |
void | process_inplace (EMData *image) |
To process an image in-place. | |
string | get_name () const |
Get the processor's name. | |
string | get_desc () const |
Get the descrition of this specific processor. | |
Static Public Member Functions | |
Processor * | NEW () |
Static Public Attributes | |
const string | NAME = "math.realtofft" |
Definition at line 3772 of file processor.h.
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Get the descrition of this specific processor. This function must be overwritten by a subclass.
Implements EMAN::Processor. Definition at line 3787 of file processor.h. 03788 { 03789 return "This will replace the image with a full-circle 2D fft amplitude rendering. Note that this renders amplitude, when intensity is more common."; 03790 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 3777 of file processor.h. Referenced by process_inplace(). 03778 {
03779 return NAME;
03780 }
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Definition at line 3782 of file processor.h. 03783 { 03784 return new RealToFFTProcessor(); 03785 }
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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.
Implements EMAN::Processor. Definition at line 2965 of file processor.cpp. References EMAN::EMData::do_fft(), get_name(), EMAN::EMData::get_value_at(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), ImageDimensionException, ImageFormatException, EMAN::EMData::is_complex(), LOGERR, LOGWARN, norm(), nx, ny, EMAN::EMData::ri2ap(), EMAN::EMData::set_value_at(), EMAN::EMData::update(), x, and y. 02966 { 02967 if (!image) { 02968 LOGWARN("NULL Image"); 02969 return; 02970 } 02971 02972 //Note : real image only! 02973 if(image->is_complex()) { 02974 LOGERR("%s Processor only operates on real images", get_name().c_str()); 02975 throw ImageFormatException("apply to real image only"); 02976 } 02977 02978 // Note : 2D only! 02979 int nz = image->get_zsize(); 02980 if (nz > 1) { 02981 LOGERR("%s Processor doesn't support 3D models", get_name().c_str()); 02982 throw ImageDimensionException("3D model not supported"); 02983 } 02984 02985 EMData *ff=image->do_fft(); 02986 ff->ri2ap(); 02987 02988 int nx=image->get_xsize(); 02989 int ny=image->get_ysize(); 02990 02991 int x,y; 02992 float norm=static_cast<float>(nx*ny); 02993 02994 for (y=0; y<ny; y++) image->set_value_at(0,y,0); 02995 02996 for (x=1; x<nx/2; x++) { 02997 for (y=0; y<ny; y++) { 02998 int y2; 02999 if (y<ny/2) y2=y+ny/2; 03000 else if (y==ny/2) y2=ny; 03001 else y2=y-ny/2; 03002 image->set_value_at(x,y,ff->get_value_at(nx-x*2,ny-y2)/norm); 03003 } 03004 } 03005 03006 for (x=nx/2; x<nx; x++) { 03007 for (y=0; y<ny; y++) { 03008 int y2; 03009 if (y<ny/2) y2=y+ny/2; 03010 else y2=y-ny/2; 03011 image->set_value_at(x,y,ff->get_value_at(x*2-nx,y2)/norm); 03012 } 03013 } 03014 03015 image->update(); 03016 if( ff ) 03017 { 03018 delete ff; 03019 ff = 0; 03020 } 03021 }
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Definition at line 134 of file processor.cpp. |