#include <averager.h>
Inheritance diagram for EMAN::IterationAverager:
Public Member Functions | |
IterationAverager () | |
void | add_image (EMData *image) |
To add an image to the Averager. | |
EMData * | finish () |
Finish up the averaging and return the result. | |
string | get_name () const |
Get the Averager's name. | |
string | get_desc () const |
Static Public Member Functions | |
Averager * | NEW () |
Static Public Attributes | |
const string | NAME = "iteration" |
Private Attributes | |
EMData * | sigma_image |
int | nimg |
Definition at line 302 of file averager.h.
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Definition at line 467 of file averager.cpp. 00467 : nimg(0) 00468 { 00469 00470 }
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To add an image to the Averager. This image will be averaged in this function.
Implements EMAN::Averager. Definition at line 472 of file averager.cpp. References EMAN::EMData::get_data(), get_name(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), EMAN::EMUtil::is_same_size(), LOGERR, nimg, nx, ny, and EMAN::EMData::set_size(). 00473 { 00474 if (!image) { 00475 return; 00476 } 00477 00478 if (nimg >= 1 && !EMUtil::is_same_size(image, result)) { 00479 LOGERR("%sAverager can only process same-size Image", 00480 get_name().c_str()); 00481 return; 00482 } 00483 00484 nimg++; 00485 00486 int nx = image->get_xsize(); 00487 int ny = image->get_ysize(); 00488 int nz = image->get_zsize(); 00489 size_t image_size = (size_t)nx * ny * nz; 00490 00491 if (nimg == 1) { 00492 result = new EMData(); 00493 result->set_size(nx, ny, nz); 00494 sigma_image = new EMData(); 00495 sigma_image->set_size(nx, ny, nz); 00496 } 00497 00498 float *image_data = image->get_data(); 00499 float *result_data = result->get_data(); 00500 float *sigma_image_data = sigma_image->get_data(); 00501 00502 for (size_t j = 0; j < image_size; ++j) { 00503 float f = image_data[j]; 00504 result_data[j] += f; 00505 sigma_image_data[j] += f * f; 00506 } 00507 00508 00509 }
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Finish up the averaging and return the result.
Implements EMAN::Averager. Definition at line 511 of file averager.cpp. References EMAN::EMData::append_image(), EMAN::Util::eman_erfc(), EMAN::EMData::get_attr(), EMAN::EMData::get_data(), EMAN::EMData::get_xsize(), EMAN::EMData::get_ysize(), EMAN::EMData::get_zsize(), nimg, nx, ny, sqrt(), and EMAN::EMData::update(). 00512 { 00513 if (nimg < 1) { 00514 return result; 00515 } 00516 00517 int nx = result->get_xsize(); 00518 int ny = result->get_ysize(); 00519 int nz = result->get_zsize(); 00520 size_t image_size = (size_t)nx * ny * nz; 00521 00522 float *result_data = result->get_data(); 00523 float *sigma_image_data = sigma_image->get_data(); 00524 00525 for (size_t j = 0; j < image_size; ++j) { 00526 result_data[j] /= nimg; 00527 float f1 = sigma_image_data[j] / nimg; 00528 float f2 = result_data[j]; 00529 sigma_image_data[j] = sqrt(f1 - f2 * f2) / sqrt((float)nimg); 00530 } 00531 00532 result->update(); 00533 sigma_image->update(); 00534 00535 result->append_image("iter.hed"); 00536 float sigma = sigma_image->get_attr("sigma"); 00537 float *sigma_image_data2 = sigma_image->get_data(); 00538 float *result_data2 = result->get_data(); 00539 float *d2 = new float[nx * ny]; 00540 size_t sec_size = nx * ny * sizeof(float); 00541 00542 memcpy(d2, result_data2, sec_size); 00543 memcpy(sigma_image_data2, result_data2, sec_size); 00544 00545 printf("Iter sigma=%f\n", sigma); 00546 00547 for (int k = 0; k < 1000; k++) { 00548 for (int i = 1; i < nx - 1; i++) { 00549 for (int j = 1; j < ny - 1; j++) { 00550 int l = i + j * nx; 00551 float c1 = (d2[l - 1] + d2[l + 1] + d2[l - nx] + d2[l + nx]) / 4.0f - d2[l]; 00552 float c2 = fabs(result_data2[l] - sigma_image_data2[l]) / sigma; 00553 result_data2[l] += c1 * Util::eman_erfc(c2) / 100.0f; 00554 } 00555 } 00556 00557 memcpy(d2, result_data2, sec_size); 00558 } 00559 00560 if( d2 ) 00561 { 00562 delete[]d2; 00563 d2 = 0; 00564 } 00565 00566 sigma_image->update(); 00567 if( sigma_image ) 00568 { 00569 delete sigma_image; 00570 sigma_image = 0; 00571 } 00572 00573 result->update(); 00574 result->append_image("iter.hed"); 00575 00576 00577 return result; 00578 }
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Implements EMAN::Averager. Definition at line 314 of file averager.h. 00315 { 00316 return "Unknown"; 00317 }
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Get the Averager's name. Each Averager is identified by a unique name.
Implements EMAN::Averager. Definition at line 309 of file averager.h. Referenced by add_image(). 00310 {
00311 return NAME;
00312 }
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Definition at line 319 of file averager.h. 00320 { 00321 return new IterationAverager(); 00322 }
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Definition at line 48 of file averager.cpp. |
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Definition at line 328 of file averager.h. Referenced by add_image(), and finish(). |
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Definition at line 327 of file averager.h. |