#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 3741 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 3756 of file processor.h. 03757 { 03758 return "This will replace the image with a full-circle 2D fft amplitude rendering. Note that this renders amplitude, when intensity is more common."; 03759 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 3746 of file processor.h. Referenced by process_inplace(). 03747 {
03748 return NAME;
03749 }
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Definition at line 3751 of file processor.h. 03752 { 03753 return new RealToFFTProcessor(); 03754 }
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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 2946 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. 02947 { 02948 if (!image) { 02949 LOGWARN("NULL Image"); 02950 return; 02951 } 02952 02953 //Note : real image only! 02954 if(image->is_complex()) { 02955 LOGERR("%s Processor only operates on real images", get_name().c_str()); 02956 throw ImageFormatException("apply to real image only"); 02957 } 02958 02959 // Note : 2D only! 02960 int nz = image->get_zsize(); 02961 if (nz > 1) { 02962 LOGERR("%s Processor doesn't support 3D models", get_name().c_str()); 02963 throw ImageDimensionException("3D model not supported"); 02964 } 02965 02966 EMData *ff=image->do_fft(); 02967 ff->ri2ap(); 02968 02969 int nx=image->get_xsize(); 02970 int ny=image->get_ysize(); 02971 02972 int x,y; 02973 float norm=static_cast<float>(nx*ny); 02974 02975 for (y=0; y<ny; y++) image->set_value_at(0,y,0); 02976 02977 for (x=1; x<nx/2; x++) { 02978 for (y=0; y<ny; y++) { 02979 int y2; 02980 if (y<ny/2) y2=y+ny/2; 02981 else if (y==ny/2) y2=ny; 02982 else y2=y-ny/2; 02983 image->set_value_at(x,y,ff->get_value_at(nx-x*2,ny-y2)/norm); 02984 } 02985 } 02986 02987 for (x=nx/2; x<nx; x++) { 02988 for (y=0; y<ny; y++) { 02989 int y2; 02990 if (y<ny/2) y2=y+ny/2; 02991 else y2=y-ny/2; 02992 image->set_value_at(x,y,ff->get_value_at(x*2-nx,y2)/norm); 02993 } 02994 } 02995 02996 image->update(); 02997 if( ff ) 02998 { 02999 delete ff; 03000 ff = 0; 03001 } 03002 }
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Definition at line 139 of file processor.cpp. |