#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 | |
static Processor * | NEW () |
Static Public Attributes | |
static const string | NAME = "math.realtofft" |
Definition at line 3817 of file processor.h.
string EMAN::RealToFFTProcessor::get_desc | ( | ) | const [inline, virtual] |
Get the descrition of this specific processor.
This function must be overwritten by a subclass.
Implements EMAN::Processor.
Definition at line 3832 of file processor.h.
03833 { 03834 return "This will replace the image with a full-circle 2D fft amplitude rendering. Note that this renders amplitude, when intensity is more common."; 03835 }
string EMAN::RealToFFTProcessor::get_name | ( | ) | const [inline, virtual] |
Get the processor's name.
Each processor is identified by a unique name.
Implements EMAN::Processor.
Definition at line 3822 of file processor.h.
References NAME.
Referenced by process_inplace().
03823 { 03824 return NAME; 03825 }
static Processor* EMAN::RealToFFTProcessor::NEW | ( | ) | [inline, static] |
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.
image | The image to be processed. |
Implements EMAN::Processor.
Definition at line 3037 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(), EMAN::EMData::ri2ap(), EMAN::EMData::set_value_at(), EMAN::EMData::update(), and x.
03038 { 03039 if (!image) { 03040 LOGWARN("NULL Image"); 03041 return; 03042 } 03043 03044 //Note : real image only! 03045 if(image->is_complex()) { 03046 LOGERR("%s Processor only operates on real images", get_name().c_str()); 03047 throw ImageFormatException("apply to real image only"); 03048 } 03049 03050 // Note : 2D only! 03051 int nz = image->get_zsize(); 03052 if (nz > 1) { 03053 LOGERR("%s Processor doesn't support 3D models", get_name().c_str()); 03054 throw ImageDimensionException("3D model not supported"); 03055 } 03056 03057 EMData *ff=image->do_fft(); 03058 ff->ri2ap(); 03059 03060 int nx=image->get_xsize(); 03061 int ny=image->get_ysize(); 03062 03063 int x,y; 03064 float norm=static_cast<float>(nx*ny); 03065 03066 for (y=0; y<ny; y++) image->set_value_at(0,y,0); 03067 03068 for (x=1; x<nx/2; x++) { 03069 for (y=0; y<ny; y++) { 03070 int y2; 03071 if (y<ny/2) y2=y+ny/2; 03072 else if (y==ny/2) y2=ny; 03073 else y2=y-ny/2; 03074 image->set_value_at(x,y,ff->get_value_at(nx-x*2,ny-y2)/norm); 03075 } 03076 } 03077 03078 for (x=nx/2; x<nx; x++) { 03079 for (y=0; y<ny; y++) { 03080 int y2; 03081 if (y<ny/2) y2=y+ny/2; 03082 else y2=y-ny/2; 03083 image->set_value_at(x,y,ff->get_value_at(x*2-nx,y2)/norm); 03084 } 03085 } 03086 03087 image->update(); 03088 if( ff ) 03089 { 03090 delete ff; 03091 ff = 0; 03092 } 03093 }
const string RealToFFTProcessor::NAME = "math.realtofft" [static] |