#include <processor.h>
Inheritance diagram for EMAN::WaveletProcessor:
Public Member Functions | |
virtual void | process_inplace (EMData *image) |
To process an image in-place. | |
virtual string | get_name () const |
Get the processor's name. | |
virtual TypeDict | get_param_types () const |
Get processor parameter information in a dictionary. | |
virtual string | get_desc () const |
Get the descrition of this specific processor. | |
Static Public Member Functions | |
Processor * | NEW () |
Static Public Attributes | |
const string | NAME = "basis.wavelet" |
type | "daub", "harr", or "bspl" | |
dir | 1 for forward transform, -1 for inverse transform | |
ord | for Daubechies (4,6,8,...,20), for Harr (2), for B-Splines (103, 105, 202, 204, 206, 208, 301, 303, 305 307, 309) |
Definition at line 6595 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 6619 of file processor.h. 06620 { 06621 return "Computes the DWT (discrete wavelet transform) of an image in one of 3 possible bases"; 06622 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 6600 of file processor.h. Referenced by process_inplace(). 06601 {
06602 return NAME;
06603 }
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Get processor parameter information in a dictionary. Each parameter has one record in the dictionary. Each record contains its name, data-type, and description.
Reimplemented from EMAN::Processor. Definition at line 6610 of file processor.h. References EMAN::TypeDict::put(). 06611 { 06612 TypeDict d; 06613 d.put("type", EMObject::STRING, "'daub', 'harr' or 'bspl'"); 06614 d.put("dir", EMObject::INT, "1 for forward transform, -1 for inverse transform"); 06615 d.put("ord", EMObject::INT, "Daubechies (4,6,8,...,20), for Harr (2), for B-Splines (103, 105, 202, 204, 206, 208, 301, 303, 305 307, 309)"); 06616 return d; 06617 }
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Definition at line 6605 of file processor.h. 06606 { 06607 return new WaveletProcessor(); 06608 }
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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 7900 of file processor.cpp. References get_name(), EMAN::EMData::get_value_at(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), ImageDimensionException, InvalidStringException, EMAN::Util::IsPower2(), LOGERR, nx, ny, and EMAN::EMData::set_value_at_fast(). 07901 { 07902 if (image->get_zsize() != 1) { 07903 LOGERR("%s Processor doesn't support 3D", get_name().c_str()); 07904 throw ImageDimensionException("3D model not supported"); 07905 } 07906 07907 int i,nx,ny; 07908 const gsl_wavelet_type * T; 07909 nx=image->get_xsize(); 07910 ny=image->get_ysize(); 07911 07912 if (nx != ny && ny!=1) throw ImageDimensionException("Wavelet transform only supports square images"); 07913 // float l=log((float)nx)/log(2.0f); 07914 // if (l!=floor(l)) throw ImageDimensionException("Wavelet transform size must be power of 2"); 07915 if( !Util::IsPower2(nx) ) throw ImageDimensionException("Wavelet transform size must be power of 2"); 07916 07917 // Unfortunately GSL works only on double() arrays 07918 // eventually we should put our own wavelet code in here 07919 // but this will work for now 07920 double *cpy = (double *)malloc(nx*ny*sizeof(double)); 07921 07922 for (i=0; i<nx*ny; i++) cpy[i]=image->get_value_at(i,0,0); 07923 07924 string tp = (const char*)params["type"]; 07925 if (tp=="daub") T=gsl_wavelet_daubechies; 07926 else if (tp=="harr") T=gsl_wavelet_haar; 07927 else if (tp=="bspl") T=gsl_wavelet_bspline; 07928 else throw InvalidStringException(tp,"Invalid wavelet name, 'daub', 'harr' or 'bspl'"); 07929 07930 int K=(int)params["ord"]; 07931 gsl_wavelet_direction dir; 07932 if ((int)params["dir"]==1) dir=forward; 07933 else dir=backward; 07934 07935 gsl_wavelet *w = gsl_wavelet_alloc(T, K); 07936 gsl_wavelet_workspace *work = gsl_wavelet_workspace_alloc(nx); 07937 07938 if (ny==1) gsl_wavelet_transform (w,cpy, 1, nx, dir, work); 07939 else gsl_wavelet2d_transform (w, cpy, nx,nx,ny, dir, work); 07940 07941 gsl_wavelet_workspace_free (work); 07942 gsl_wavelet_free (w); 07943 07944 for (i=0; i<nx*ny; i++) image->set_value_at_fast(i,0,0,static_cast<float>(cpy[i])); 07945 07946 free(cpy); 07947 }
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Definition at line 211 of file processor.cpp. |