#include <processor.h>
Inheritance diagram for EMAN::PhaseToCenterProcessor:
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.tocenter" |
works for 1D, 2D and 3D images, for all combinations of even and oddness
Definition at line 4765 of file processor.h.
virtual string EMAN::PhaseToCenterProcessor::get_desc | ( | ) | const [inline, virtual] |
Get the descrition of this specific processor.
This function must be overwritten by a subclass.
Implements EMAN::Processor.
Definition at line 4780 of file processor.h.
virtual string EMAN::PhaseToCenterProcessor::get_name | ( | ) | const [inline, virtual] |
Get the processor's name.
Each processor is identified by a unique name.
Implements EMAN::Processor.
Definition at line 4770 of file processor.h.
References NAME.
04771 { 04772 return NAME; 04773 }
static Processor* EMAN::PhaseToCenterProcessor::NEW | ( | ) | [inline, static] |
Definition at line 4775 of file processor.h.
04776 { 04777 return new PhaseToCenterProcessor(); 04778 }
void PhaseToCenterProcessor::process_inplace | ( | EMData * | image | ) | [virtual] |
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.
image | The image to be processed. |
Implements EMAN::Processor.
Definition at line 5074 of file processor.cpp.
References emdata_phaseorigin_to_center(), EMAN::Phase180Processor::fourier_phaseshift180(), EMAN::EMData::get_data(), EMAN::EMData::get_ndim(), 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().
05075 { 05076 if (!image) throw NullPointerException("Error: attempt to phase shift a null image"); 05077 05078 #ifdef EMAN2_USING_CUDA 05079 if (image->getcudarwdata() && image->get_ndim() == 2) { // Because CUDA phase origin to center only works for 2D atm 05080 //cout << "CUDA tocenter" << endl; 05081 emdata_phaseorigin_to_center(image->getcudarwdata(), image->get_xsize(), image->get_ysize(), image->get_zsize()); 05082 return; 05083 } 05084 #endif // EMAN2_USING_CUDA 05085 05086 if (image->is_complex()) { 05087 fourier_phaseshift180(image); 05088 return; 05089 } 05090 05091 int nx = image->get_xsize(); 05092 int ny = image->get_ysize(); 05093 int nz = image->get_zsize(); 05094 05095 if ( ny == 1 && nz == 1 && nx == 1) return; 05096 05097 int nxy = nx * ny; 05098 05099 float *rdata = image->get_data(); 05100 05101 bool xodd = (nx % 2) == 1; 05102 bool yodd = (ny % 2) == 1; 05103 bool zodd = (nz % 2) == 1; 05104 05105 if ( ny == 1 && nz == 1 ){ 05106 if (xodd) { 05107 // Put the center pixel at the end, shifting the contents 05108 // to right of the center one step to the left 05109 float in_x = rdata[nx/2]; 05110 float tmp; 05111 for ( int i = nx-1; i >= nx/2; --i ) { 05112 tmp = rdata[i]; 05113 rdata[i] = in_x; 05114 in_x = tmp; 05115 } 05116 } 05117 // now the operation is straight forward 05118 for ( int i = 0; i < nx/2; ++i ) { 05119 int idx = i + nx/2; 05120 float tmp = rdata[i]; 05121 rdata[i] = rdata[idx]; 05122 rdata[idx] = tmp; 05123 } 05124 } 05125 else if ( nz == 1 ){ 05126 // The order in which these operations occur literally undoes what the 05127 // PhaseToCornerProcessor did to the image. 05128 // First, the corners sections of the image are swapped appropriately 05129 swap_corners_180(image); 05130 // Second, central pixel lines are swapped 05131 swap_central_slices_180(image); 05132 05133 float tmp; 05134 // Third, appropriate sections of the image are cyclically shifted by one pixel 05135 if (xodd) { 05136 // Transfer the middle column to the far right 05137 // Shift all from the far right to (but not including the) middle one to the left 05138 for ( int r = 0; r < ny; ++r ) { 05139 float last_val = rdata[r*nx+nx/2]; 05140 for ( int c = nx-1; c >= nx/2; --c ){ 05141 int idx = r*nx+c; 05142 tmp = rdata[idx]; 05143 rdata[idx] = last_val; 05144 last_val = tmp; 05145 } 05146 } 05147 } 05148 if (yodd) { 05149 // Tranfer the middle row to the top, 05150 // shifting all pixels from the top row down one, until but not including the) middle 05151 for ( int c = 0; c < nx; ++c ) { 05152 // Get the value in the top row 05153 float last_val = rdata[ny/2*nx + c]; 05154 for ( int r = ny-1; r >= ny/2; --r ){ 05155 int idx = r*nx+c; 05156 tmp = rdata[idx]; 05157 rdata[idx] = last_val; 05158 last_val = tmp; 05159 } 05160 } 05161 } 05162 } 05163 else 05164 { 05165 // The order in which these operations occur literally undoes the 05166 // PhaseToCornerProcessor operation - in 3D. 05167 // First, the corner quadrants of the voxel volume are swapped 05168 swap_corners_180(image); 05169 // Second, appropriate parts of the central slices are swapped 05170 swap_central_slices_180(image); 05171 05172 float tmp; 05173 // Third, appropriate sections of the image are cyclically shifted by one voxel 05174 if (xodd) { 05175 // Transfer the central slice in the x direction to the far right 05176 // moving all slices on the far right toward the center one pixel, until 05177 // the center x slice is ecountered 05178 size_t idx = 0; 05179 for (int s = 0; s < nz; ++s) { 05180 for (int r = 0; r < ny; ++r) { 05181 float last_val = rdata[s*nxy+r*nx+nx/2]; 05182 for (int c = nx-1; c >= nx/2; --c){ 05183 idx = (size_t)s*nxy+r*nx+c; 05184 tmp = rdata[idx]; 05185 rdata[idx] = last_val; 05186 last_val = tmp; 05187 } 05188 } 05189 } 05190 } 05191 if (yodd) { 05192 // Tranfer the central slice in the y direction to the top 05193 // shifting all pixels below it down on, until the center y slice is encountered. 05194 size_t idx = 0; 05195 for (int s = 0; s < nz; ++s) { 05196 for (int c = 0; c < nx; ++c) { 05197 float last_val = rdata[s*nxy+ny/2*nx+c]; 05198 for (int r = ny-1; r >= ny/2; --r){ 05199 idx = (size_t)s*nxy+r*nx+c; 05200 tmp = rdata[idx]; 05201 rdata[idx] = last_val; 05202 last_val = tmp; 05203 } 05204 } 05205 } 05206 } 05207 if (zodd) { 05208 // Tranfer the central slice in the z direction to the back 05209 // shifting all pixels beyond and including the middle slice back one. 05210 size_t idx = 0; 05211 for (int r = 0; r < ny; ++r){ 05212 for (int c = 0; c < nx; ++c) { 05213 float last_val = rdata[nz/2*nxy+r*nx+c]; 05214 for (int s = nz-1; s >= nz/2; --s) { 05215 idx = (size_t)s*nxy+r*nx+c; 05216 tmp = rdata[idx]; 05217 rdata[idx] = last_val; 05218 last_val = tmp; 05219 } 05220 } 05221 } 05222 } 05223 05224 05225 } 05226 }
const string PhaseToCenterProcessor::NAME = "xform.phaseorigin.tocenter" [static] |