#include <processor.h>
Inheritance diagram for EMAN::PhaseToCornerProcessor:
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 string | get_desc () const |
Get the descrition of this specific processor. | |
Static Public Member Functions | |
static Processor * | NEW () |
Static Public Attributes | |
static const string | NAME = "xform.phaseorigin.tocorner" |
Definition at line 4830 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 4845 of file processor.h.
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 4835 of file processor.h. References NAME. 04836 { 04837 return NAME; 04838 }
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Definition at line 4840 of file processor.h. 04841 { 04842 return new PhaseToCornerProcessor(); 04843 }
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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 4897 of file processor.cpp. References EMAN::Phase180Processor::fourier_phaseshift180(), EMAN::EMData::get_data(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), EMAN::EMData::is_complex(), NullPointerException, rdata, EMAN::Phase180Processor::swap_central_slices_180(), and EMAN::Phase180Processor::swap_corners_180(). 04898 { 04899 if (!image) throw NullPointerException("Error: attempt to phase shift a null image"); 04900 04901 if (image->is_complex()) { 04902 fourier_phaseshift180(image); 04903 return; 04904 } 04905 04906 int nx = image->get_xsize(); 04907 int ny = image->get_ysize(); 04908 int nz = image->get_zsize(); 04909 04910 if ( ny == 1 && nz == 1 && nx == 1) return; 04911 04912 int nxy = nx * ny; 04913 04914 float *rdata = image->get_data(); 04915 04916 bool xodd = (nx % 2) == 1; 04917 bool yodd = (ny % 2) == 1; 04918 bool zodd = (nz % 2) == 1; 04919 04920 if ( ny == 1 && nz == 1 ){ 04921 if (xodd){ 04922 // Put the last pixel in the center, shifting the contents 04923 // to right of the center one step to the right 04924 float in_x = rdata[nx-1]; 04925 float tmp; 04926 for ( int i = nx/2; i < nx; ++i ) { 04927 tmp = rdata[i]; 04928 rdata[i] = in_x; 04929 in_x = tmp; 04930 } 04931 } 04932 // now the operation is straight forward 04933 for ( int i = 0; i < nx/2; ++i ) { 04934 int idx = i+nx/2+xodd; 04935 float tmp = rdata[i]; 04936 rdata[i] = rdata[idx]; 04937 rdata[idx] = tmp; 04938 } 04939 04940 } 04941 else if ( nz == 1 ) { 04942 if (yodd) { 04943 // Tranfer the top row into the middle row, 04944 // shifting all pixels above and including the current middle up one. 04945 for ( int c = 0; c < nx; ++c ) { 04946 // Get the value in the top row 04947 float last_val = rdata[(ny-1)*nx + c]; 04948 float tmp; 04949 for ( int r = ny/2; r < ny; ++r ){ 04950 int idx =r*nx+c; 04951 tmp = rdata[idx]; 04952 rdata[idx] = last_val; 04953 last_val = tmp; 04954 } 04955 } 04956 } 04957 04958 if (xodd) { 04959 // Transfer the right most column into the center column 04960 // Shift all columns right of and including center to the right one pixel 04961 for ( int r = 0; r < ny; ++r ) { 04962 float last_val = rdata[(r+1)*nx -1]; 04963 float tmp; 04964 for ( int c = nx/2; c < nx; ++c ){ 04965 int idx =r*nx+c; 04966 tmp = rdata[idx]; 04967 rdata[idx] = last_val; 04968 last_val = tmp; 04969 } 04970 } 04971 } 04972 // It is important central slice shifting come after the previous two operations 04973 swap_central_slices_180(image); 04974 // Now the corners of the image can be shifted... 04975 swap_corners_180(image); 04976 04977 } 04978 else 04979 { 04980 float tmp; 04981 if (zodd) { 04982 // Tranfer the back slice into the middle slice, 04983 // shifting all pixels beyond and including the middle slice back one. 04984 size_t idx = 0; 04985 for (int r = 0; r < ny; ++r){ 04986 for (int c = 0; c < nx; ++c) { 04987 float last_val = rdata[(nz-1)*nxy+r*nx+c]; 04988 for (int s = nz/2; s < nz; ++s) { 04989 idx = s*nxy+r*nx+c; 04990 tmp = rdata[idx]; 04991 rdata[idx] = last_val; 04992 last_val = tmp; 04993 } 04994 } 04995 } 04996 } 04997 if (yodd) { 04998 // Tranfer the top slice into the middle slice, 04999 // shifting all pixels above and including the middle slice up one. 05000 size_t idx = 0; 05001 for (int s = 0; s < nz; ++s) { 05002 for (int c = 0; c < nx; ++c) { 05003 float last_val = rdata[s*nxy+(ny-1)*nx+c]; 05004 for (int r = ny/2; r < ny; ++r){ 05005 idx = s*nxy+r*nx+c; 05006 tmp = rdata[idx]; 05007 rdata[idx] = last_val; 05008 last_val = tmp; 05009 } 05010 } 05011 } 05012 } 05013 if (xodd) { 05014 // Transfer the right most slice into the central slice 05015 // Shift all pixels to right of and including center slice to the right one pixel 05016 size_t idx = 0; 05017 for (int s = 0; s < nz; ++s) { 05018 for (int r = 0; r < ny; ++r) { 05019 float last_val = rdata[s*nxy+r*nx+nx-1]; 05020 for (int c = nx/2; c < nx; ++c){ 05021 idx = s*nxy+r*nx+c; 05022 tmp = rdata[idx]; 05023 rdata[idx] = last_val; 05024 last_val = tmp; 05025 } 05026 } 05027 } 05028 } 05029 // Now swap the various parts in the central slices 05030 swap_central_slices_180(image); 05031 // Now shift the corners 05032 swap_corners_180(image); 05033 } 05034 }
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Definition at line 4850 of file processor.h. Referenced by get_name(). |