#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 6423 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 6447 of file processor.h. 06448 { 06449 return "Computes the DWT (discrete wavelet transform) of an image in one of 3 possible bases"; 06450 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 6428 of file processor.h. Referenced by process_inplace(). 06429 {
06430 return NAME;
06431 }
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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 6438 of file processor.h. References EMAN::TypeDict::put(). 06439 { 06440 TypeDict d; 06441 d.put("type", EMObject::STRING, "'daub', 'harr' or 'bspl'"); 06442 d.put("dir", EMObject::INT, "1 for forward transform, -1 for inverse transform"); 06443 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)"); 06444 return d; 06445 }
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Definition at line 6433 of file processor.h. 06434 { 06435 return new WaveletProcessor(); 06436 }
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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 7936 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(). 07937 { 07938 if (image->get_zsize() != 1) { 07939 LOGERR("%s Processor doesn't support 3D", get_name().c_str()); 07940 throw ImageDimensionException("3D model not supported"); 07941 } 07942 07943 int i,nx,ny; 07944 const gsl_wavelet_type * T; 07945 nx=image->get_xsize(); 07946 ny=image->get_ysize(); 07947 07948 if (nx != ny && ny!=1) throw ImageDimensionException("Wavelet transform only supports square images"); 07949 // float l=log((float)nx)/log(2.0f); 07950 // if (l!=floor(l)) throw ImageDimensionException("Wavelet transform size must be power of 2"); 07951 if( !Util::IsPower2(nx) ) throw ImageDimensionException("Wavelet transform size must be power of 2"); 07952 07953 // Unfortunately GSL works only on double() arrays 07954 // eventually we should put our own wavelet code in here 07955 // but this will work for now 07956 double *cpy = (double *)malloc(nx*ny*sizeof(double)); 07957 07958 for (i=0; i<nx*ny; i++) cpy[i]=image->get_value_at(i,0,0); 07959 07960 string tp = (const char*)params["type"]; 07961 if (tp=="daub") T=gsl_wavelet_daubechies; 07962 else if (tp=="harr") T=gsl_wavelet_haar; 07963 else if (tp=="bspl") T=gsl_wavelet_bspline; 07964 else throw InvalidStringException(tp,"Invalid wavelet name, 'daub', 'harr' or 'bspl'"); 07965 07966 int K=(int)params["ord"]; 07967 gsl_wavelet_direction dir; 07968 if ((int)params["dir"]==1) dir=forward; 07969 else dir=backward; 07970 07971 gsl_wavelet *w = gsl_wavelet_alloc(T, K); 07972 gsl_wavelet_workspace *work = gsl_wavelet_workspace_alloc(nx); 07973 07974 if (ny==1) gsl_wavelet_transform (w,cpy, 1, nx, dir, work); 07975 else gsl_wavelet2d_transform (w, cpy, nx,nx,ny, dir, work); 07976 07977 gsl_wavelet_workspace_free (work); 07978 gsl_wavelet_free (w); 07979 07980 for (i=0; i<nx*ny; i++) image->set_value_at_fast(i,0,0,static_cast<float>(cpy[i])); 07981 07982 free(cpy); 07983 }
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Definition at line 206 of file processor.cpp. |