#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 3817 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 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 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 3822 of file processor.h. Referenced by process_inplace(). 03823 {
03824 return NAME;
03825 }
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Definition at line 3827 of file processor.h. 03828 { 03829 return new RealToFFTProcessor(); 03830 }
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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 3041 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. 03042 { 03043 if (!image) { 03044 LOGWARN("NULL Image"); 03045 return; 03046 } 03047 03048 //Note : real image only! 03049 if(image->is_complex()) { 03050 LOGERR("%s Processor only operates on real images", get_name().c_str()); 03051 throw ImageFormatException("apply to real image only"); 03052 } 03053 03054 // Note : 2D only! 03055 int nz = image->get_zsize(); 03056 if (nz > 1) { 03057 LOGERR("%s Processor doesn't support 3D models", get_name().c_str()); 03058 throw ImageDimensionException("3D model not supported"); 03059 } 03060 03061 EMData *ff=image->do_fft(); 03062 ff->ri2ap(); 03063 03064 int nx=image->get_xsize(); 03065 int ny=image->get_ysize(); 03066 03067 int x,y; 03068 float norm=static_cast<float>(nx*ny); 03069 03070 for (y=0; y<ny; y++) image->set_value_at(0,y,0); 03071 03072 for (x=1; x<nx/2; x++) { 03073 for (y=0; y<ny; y++) { 03074 int y2; 03075 if (y<ny/2) y2=y+ny/2; 03076 else if (y==ny/2) y2=ny; 03077 else y2=y-ny/2; 03078 image->set_value_at(x,y,ff->get_value_at(nx-x*2,ny-y2)/norm); 03079 } 03080 } 03081 03082 for (x=nx/2; x<nx; x++) { 03083 for (y=0; y<ny; y++) { 03084 int y2; 03085 if (y<ny/2) y2=y+ny/2; 03086 else y2=y-ny/2; 03087 image->set_value_at(x,y,ff->get_value_at(x*2-nx,y2)/norm); 03088 } 03089 } 03090 03091 image->update(); 03092 if( ff ) 03093 { 03094 delete ff; 03095 ff = 0; 03096 } 03097 }
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Definition at line 134 of file processor.cpp. |