#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 3703 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 3718 of file processor.h. 03719 {
03720 return "This will replace the image with a full-circle 2D fft amplitude rendering. Note that this renders amplitude, when intensity is more common.";
03721 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 3708 of file processor.h. Referenced by process_inplace(). 03709 {
03710 return NAME;
03711 }
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Definition at line 3713 of file processor.h. 03714 {
03715 return new RealToFFTProcessor();
03716 }
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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 2918 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. 02919 {
02920 if (!image) {
02921 LOGWARN("NULL Image");
02922 return;
02923 }
02924
02925 //Note : real image only!
02926 if(image->is_complex()) {
02927 LOGERR("%s Processor only operates on real images", get_name().c_str());
02928 throw ImageFormatException("apply to real image only");
02929 }
02930
02931 // Note : 2D only!
02932 int nz = image->get_zsize();
02933 if (nz > 1) {
02934 LOGERR("%s Processor doesn't support 3D models", get_name().c_str());
02935 throw ImageDimensionException("3D model not supported");
02936 }
02937
02938 EMData *ff=image->do_fft();
02939 ff->ri2ap();
02940
02941 int nx=image->get_xsize();
02942 int ny=image->get_ysize();
02943
02944 int x,y;
02945 float norm=static_cast<float>(nx*ny);
02946
02947 for (y=0; y<ny; y++) image->set_value_at(0,y,0);
02948
02949 for (x=1; x<nx/2; x++) {
02950 for (y=0; y<ny; y++) {
02951 int y2;
02952 if (y<ny/2) y2=y+ny/2;
02953 else if (y==ny/2) y2=ny;
02954 else y2=y-ny/2;
02955 image->set_value_at(x,y,ff->get_value_at(nx-x*2,ny-y2)/norm);
02956 }
02957 }
02958
02959 for (x=nx/2; x<nx; x++) {
02960 for (y=0; y<ny; y++) {
02961 int y2;
02962 if (y<ny/2) y2=y+ny/2;
02963 else y2=y-ny/2;
02964 image->set_value_at(x,y,ff->get_value_at(x*2-nx,y2)/norm);
02965 }
02966 }
02967
02968 image->update();
02969 if( ff )
02970 {
02971 delete ff;
02972 ff = 0;
02973 }
02974 }
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Definition at line 133 of file processor.cpp. |
1.3.9.1