#include <processor.h>
Inheritance diagram for EMAN::FlipProcessor:
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 = "xform.flip" |
axis | 'x', 'y', or 'z' axis. 'x' means horizonal flip; 'y' means vertical flip; |
Definition at line 4465 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 4487 of file processor.h. 04488 { 04489 return "flip an image around an axis."; 04490 }
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Get the processor's name. Each processor is identified by a unique name.
Implements EMAN::Processor. Definition at line 4470 of file processor.h. 04471 {
04472 return NAME;
04473 }
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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 4480 of file processor.h. References EMAN::TypeDict::put(). 04481 { 04482 TypeDict d; 04483 d.put("axis", EMObject::STRING, "'x', 'y', or 'z' axis. 'x' means horizonal flip; 'y' means vertical flip;"); 04484 return d; 04485 }
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Definition at line 4475 of file processor.h. 04476 { 04477 return new FlipProcessor(); 04478 }
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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 4272 of file processor.cpp. References EMAN::EMData::get_data(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), LOGWARN, nx, ny, EMAN::Processor::params, EMAN::EMData::process_inplace(), t, EMAN::EMData::update(), x, and y. 04273 { 04274 ENTERFUNC; 04275 if (!image) { 04276 LOGWARN("NULL Image"); 04277 return; 04278 } 04279 string axis = (const char*)params["axis"]; 04280 04281 #ifdef EMAN2_USING_CUDA 04282 if (image->getcudarwdata()) { 04283 //cout << "flip processor" << endl; 04284 float array[12] = {1.0, 0.0, 0.0, 0.0, 04285 0.0, 1.0, 0.0, 0.0, 04286 0.0, 0.0, 1.0, 0.0}; 04287 if (axis == "x" || axis == "X") { // horizontal flip 04288 array[0] = -1.0; 04289 }else if (axis == "y" || axis == "Y") { // vertical flip 04290 array[5] = -1.0; 04291 } 04292 else if (axis == "z" || axis == "Z") { // vertical flip 04293 array[10] = -1.0; 04294 } 04295 Transform t(array); 04296 Dict params("transform",(Transform*)&t); 04297 image->process_inplace("xform",params); 04298 04299 EXITFUNC; 04300 return; 04301 } 04302 #endif 04303 04304 04305 float *d = image->get_data(); 04306 int nx = image->get_xsize(); 04307 int ny = image->get_ysize(); 04308 int nz = image->get_zsize(); 04309 04310 size_t nxy = nx * ny; 04311 04312 04313 // Note in all cases the origin is nx/2, ny/2 and nz/2 04314 // This means when flipping even sized dimensions that some pixels are redundant. 04315 // Here redundant pixels are set to zero, however, should this change to something 04316 // like the mean. 04317 if (axis == "x" || axis == "X") { // Horizontal flip 04318 int offset = (nx%2 == 0); 04319 size_t idx1, idx2; 04320 for(int z = 0; z < nz; ++z) { 04321 for(int y = 0; y < ny; ++y) { 04322 if (offset != 0 ) { 04323 idx1 = z*nxy + y*nx; 04324 d[idx1] = 0; // Here's where you'd make it the mean 04325 } 04326 for(int x = offset; x < nx / 2; ++x) { 04327 idx1 = z*nxy + y*nx + x; 04328 idx2 = z*nxy + y*nx + (nx-x-1+offset); 04329 std::swap(d[idx1], d[idx2]); 04330 } 04331 04332 } 04333 } 04334 } 04335 04336 else if (axis == "y" || axis == "Y") { // vertical flip 04337 int offset = (ny%2 == 0); 04338 for(int z=0; z<nz; ++z) { 04339 if (offset != 0) { 04340 std::fill(d+z*nxy,d+(size_t)z*nxy+nx,0); // So if we have change it to the mean it's easy to do so. (instead of using memset) 04341 } 04342 for(int y=offset; y<ny/2; ++y) { 04343 for(int x=0; x<nx; ++x) { 04344 std::swap(d[(size_t)z*nxy + y*nx +x], d[(size_t)z*nxy + (ny -y -1+offset)*nx +x]); 04345 } 04346 } 04347 } 04348 } 04349 else if (axis == "z" || axis == "Z") { //z axis flip 04350 int offset = (nz%2 == 0); 04351 if (offset != 0) { 04352 std::fill(d,d+nxy,0);// So if we have change it to the mean it's easy to do so. (instead of using memset) 04353 } 04354 size_t idx1, idx2; 04355 for(int z=offset; z<nz/2; ++z) { 04356 for(int y=0; y<ny; ++y) { 04357 for(int x=0; x<nx; ++x) { 04358 idx1 = (size_t)z*nxy + y*nx + x; 04359 idx2 = (size_t)(nz-z-1+offset)*nxy + y*nx + x; 04360 std::swap(d[idx1], d[idx2]); 04361 } 04362 } 04363 } 04364 } 04365 04366 image->update(); 04367 EXITFUNC; 04368 }
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Definition at line 157 of file processor.cpp. |