Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/ImageGeometry.cpp @ 191:46cb2eedc2e0 wasm
ShearWarpProjectiveTransform
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 16 Mar 2018 15:01:52 +0100 |
| parents | 465b294a55f0 |
| children | e9c7a78a3e77 |
| rev | line source |
|---|---|
| 182 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2018 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "ImageGeometry.h" | |
| 23 | |
| 24 #include "Extent2D.h" | |
| 25 #include "SubpixelReader.h" | |
| 26 | |
| 27 #include <Core/Images/ImageProcessing.h> | |
| 28 #include <Core/Logging.h> | |
| 29 | |
| 30 | |
| 31 namespace OrthancStone | |
| 32 { | |
| 33 static void AddTransformedPoint(Extent2D& extent, | |
| 34 const Matrix& a, | |
| 35 double x, | |
| 36 double y) | |
| 37 { | |
| 38 assert(a.size1() == 3 && | |
| 39 a.size2() == 3); | |
| 40 | |
| 41 Vector p = LinearAlgebra::Product(a, LinearAlgebra::CreateVector(x, y, 1)); | |
| 42 | |
| 43 if (!LinearAlgebra::IsCloseToZero(p[2])) | |
| 44 { | |
| 45 extent.AddPoint(p[0] / p[2], p[1] / p[2]); | |
| 46 } | |
| 47 } | |
| 48 | |
| 49 | |
| 190 | 50 bool GetProjectiveTransformExtent(unsigned int& x1, |
| 182 | 51 unsigned int& y1, |
| 52 unsigned int& x2, | |
| 53 unsigned int& y2, | |
| 54 const Matrix& a, | |
| 55 unsigned int sourceWidth, | |
| 56 unsigned int sourceHeight, | |
| 57 unsigned int targetWidth, | |
| 58 unsigned int targetHeight) | |
| 59 { | |
| 60 if (targetWidth == 0 || | |
| 61 targetHeight == 0) | |
| 62 { | |
| 63 return false; | |
| 64 } | |
| 65 | |
| 66 Extent2D extent; | |
| 67 AddTransformedPoint(extent, a, 0, 0); | |
| 68 AddTransformedPoint(extent, a, sourceWidth, 0); | |
| 69 AddTransformedPoint(extent, a, 0, sourceHeight); | |
| 70 AddTransformedPoint(extent, a, sourceWidth, sourceHeight); | |
| 71 | |
| 72 if (extent.IsEmpty()) | |
| 73 { | |
| 74 return false; | |
| 75 } | |
| 76 else | |
| 77 { | |
| 78 int tmp; | |
| 79 | |
| 80 tmp = std::floor(extent.GetX1()); | |
| 81 if (tmp < 0) | |
| 82 { | |
| 83 x1 = 0; | |
| 84 } | |
| 85 else | |
| 86 { | |
| 87 x1 = static_cast<unsigned int>(tmp); | |
| 88 } | |
| 89 | |
| 90 tmp = std::floor(extent.GetY1()); | |
| 91 if (tmp < 0) | |
| 92 { | |
| 93 y1 = 0; | |
| 94 } | |
| 95 else | |
| 96 { | |
| 97 y1 = static_cast<unsigned int>(tmp); | |
| 98 } | |
| 99 | |
| 100 tmp = std::ceil(extent.GetX2()); | |
| 101 if (tmp < 0) | |
| 102 { | |
| 103 return false; | |
| 104 } | |
| 105 else if (static_cast<unsigned int>(tmp) >= targetWidth) | |
| 106 { | |
| 107 x2 = targetWidth - 1; | |
| 108 } | |
| 109 else | |
| 110 { | |
| 111 x2 = static_cast<unsigned int>(tmp); | |
| 112 } | |
| 113 | |
| 114 tmp = std::ceil(extent.GetY2()); | |
| 115 if (tmp < 0) | |
| 116 { | |
| 117 return false; | |
| 118 } | |
| 119 else if (static_cast<unsigned int>(tmp) >= targetHeight) | |
| 120 { | |
| 121 y2 = targetHeight - 1; | |
| 122 } | |
| 123 else | |
| 124 { | |
| 125 y2 = static_cast<unsigned int>(tmp); | |
| 126 } | |
| 127 | |
| 128 return (x1 <= x2 && | |
| 129 y1 <= y2); | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 | |
| 134 template <typename Reader, | |
| 135 bool HasOffsetX, | |
| 136 bool HasOffsetY> | |
| 137 static void ApplyAffineTransformToRow(typename Reader::PixelType* p, | |
| 138 Reader& reader, | |
| 139 unsigned int x1, | |
| 140 unsigned int x2, | |
| 141 float positionX, | |
| 142 float positionY, | |
| 143 float offsetX, | |
| 144 float offsetY) | |
| 145 { | |
| 146 typename Reader::PixelType value; | |
| 147 | |
| 148 for (unsigned int x = x1; x <= x2; x++, p++) | |
| 149 { | |
| 150 if (reader.GetValue(value, positionX, positionY)) | |
| 151 { | |
| 152 *p = value; | |
| 153 } | |
| 154 else | |
| 155 { | |
| 156 Reader::Traits::SetZero(*p); | |
| 157 } | |
| 158 | |
| 159 if (HasOffsetX) | |
| 160 { | |
| 161 positionX += offsetX; | |
| 162 } | |
| 163 | |
| 164 if (HasOffsetY) | |
| 165 { | |
| 166 positionY += offsetY; | |
| 167 } | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 | |
| 172 template <Orthanc::PixelFormat Format, | |
| 173 ImageInterpolation Interpolation> | |
| 174 static void ApplyAffineInternal(Orthanc::ImageAccessor& target, | |
| 175 const Orthanc::ImageAccessor& source, | |
| 176 const Matrix& a) | |
| 177 { | |
| 178 assert(target.GetFormat() == Format && | |
| 179 source.GetFormat() == Format); | |
| 180 | |
| 181 typedef SubpixelReader<Format, Interpolation> Reader; | |
| 182 typedef typename Reader::PixelType PixelType; | |
| 183 | |
| 184 if (Format == Orthanc::PixelFormat_RGB24) | |
| 185 { | |
| 186 Orthanc::ImageProcessing::Set(target, 0, 0, 0, 255); | |
| 187 } | |
| 188 else | |
| 189 { | |
| 190 Orthanc::ImageProcessing::Set(target, 0); | |
| 191 } | |
| 192 | |
| 193 Matrix inva; | |
| 194 if (!LinearAlgebra::InvertMatrixUnsafe(inva, a)) | |
| 195 { | |
| 196 // Singular matrix | |
| 197 return; | |
| 198 } | |
| 199 | |
| 200 Reader reader(source); | |
| 201 | |
| 202 unsigned int x1, y1, x2, y2; | |
| 203 | |
| 190 | 204 if (GetProjectiveTransformExtent(x1, y1, x2, y2, a, |
| 182 | 205 source.GetWidth(), source.GetHeight(), |
| 206 target.GetWidth(), target.GetHeight())) | |
| 207 { | |
| 208 const size_t targetPitch = target.GetPitch(); | |
|
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changeset
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209 uint8_t *targetRow = reinterpret_cast<uint8_t*> |
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46cb2eedc2e0
ShearWarpProjectiveTransform
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parents:
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diff
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210 (reinterpret_cast<PixelType*>(target.GetRow(y1)) + x1); |
| 182 | 211 |
| 212 for (unsigned int y = y1; y <= y2; y++) | |
| 213 { | |
| 214 Vector start; | |
| 215 LinearAlgebra::AssignVector(start, static_cast<double>(x1) + 0.5, | |
| 216 static_cast<double>(y) + 0.5, 1); | |
| 217 start = boost::numeric::ublas::prod(inva, start); | |
| 218 assert(LinearAlgebra::IsNear(1.0, start(2))); | |
| 219 | |
| 220 Vector offset; | |
| 221 LinearAlgebra::AssignVector(offset, static_cast<double>(x1) + 1.5, | |
| 222 static_cast<double>(y) + 0.5, 1); | |
| 223 offset = boost::numeric::ublas::prod(inva, offset) - start; | |
| 224 assert(LinearAlgebra::IsNear(0.0, offset(2))); | |
| 225 | |
| 226 float startX = static_cast<float>(start[0]); | |
| 227 float startY = static_cast<float>(start[1]); | |
| 228 float offsetX = static_cast<float>(offset[0]); | |
| 229 float offsetY = static_cast<float>(offset[1]); | |
| 230 | |
| 231 PixelType* pixel = reinterpret_cast<PixelType*>(targetRow); | |
| 232 if (LinearAlgebra::IsCloseToZero(offsetX)) | |
| 233 { | |
| 234 ApplyAffineTransformToRow<Reader, false, true> | |
| 235 (pixel, reader, x1, x2, startX, startY, offsetX, offsetY); | |
| 236 } | |
| 237 else if (LinearAlgebra::IsCloseToZero(offsetY)) | |
| 238 { | |
| 239 ApplyAffineTransformToRow<Reader, true, false> | |
| 240 (pixel, reader, x1, x2, startX, startY, offsetX, offsetY); | |
| 241 } | |
| 242 else | |
| 243 { | |
| 244 ApplyAffineTransformToRow<Reader, true, true> | |
| 245 (pixel, reader, x1, x2, startX, startY, offsetX, offsetY); | |
| 246 } | |
| 247 | |
| 248 targetRow += targetPitch; | |
| 249 } | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 | |
| 254 void ApplyAffineTransform(Orthanc::ImageAccessor& target, | |
| 255 const Orthanc::ImageAccessor& source, | |
| 256 double a11, | |
| 257 double a12, | |
| 258 double b1, | |
| 259 double a21, | |
| 260 double a22, | |
| 261 double b2, | |
| 262 ImageInterpolation interpolation) | |
| 263 { | |
| 264 if (source.GetFormat() != target.GetFormat()) | |
| 265 { | |
| 266 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
| 267 } | |
| 268 | |
| 269 if (interpolation != ImageInterpolation_Nearest && | |
| 270 interpolation != ImageInterpolation_Bilinear) | |
| 271 { | |
| 272 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 273 } | |
| 274 | |
| 275 Matrix a; | |
| 276 a.resize(3, 3); | |
| 277 a(0, 0) = a11; | |
| 278 a(0, 1) = a12; | |
| 279 a(0, 2) = b1; | |
| 280 a(1, 0) = a21; | |
| 281 a(1, 1) = a22; | |
| 282 a(1, 2) = b2; | |
| 283 a(2, 0) = 0; | |
| 284 a(2, 1) = 0; | |
| 285 a(2, 2) = 1; | |
| 286 | |
| 287 switch (source.GetFormat()) | |
| 288 { | |
| 289 case Orthanc::PixelFormat_Grayscale8: | |
| 290 switch (interpolation) | |
| 291 { | |
| 292 case ImageInterpolation_Nearest: | |
| 293 ApplyAffineInternal<Orthanc::PixelFormat_Grayscale8, | |
| 294 ImageInterpolation_Nearest>(target, source, a); | |
| 295 break; | |
| 296 | |
| 297 case ImageInterpolation_Bilinear: | |
| 298 ApplyAffineInternal<Orthanc::PixelFormat_Grayscale8, | |
| 299 ImageInterpolation_Bilinear>(target, source, a); | |
| 300 break; | |
| 301 | |
| 302 default: | |
| 303 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 304 } | |
| 305 break; | |
| 306 | |
| 307 case Orthanc::PixelFormat_Grayscale16: | |
| 308 switch (interpolation) | |
| 309 { | |
| 310 case ImageInterpolation_Nearest: | |
| 311 ApplyAffineInternal<Orthanc::PixelFormat_Grayscale16, | |
| 312 ImageInterpolation_Nearest>(target, source, a); | |
| 313 break; | |
| 314 | |
| 315 case ImageInterpolation_Bilinear: | |
| 316 ApplyAffineInternal<Orthanc::PixelFormat_Grayscale16, | |
| 317 ImageInterpolation_Bilinear>(target, source, a); | |
| 318 break; | |
| 319 | |
| 320 default: | |
| 321 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 322 } | |
| 323 break; | |
| 324 | |
| 325 case Orthanc::PixelFormat_SignedGrayscale16: | |
| 326 switch (interpolation) | |
| 327 { | |
| 328 case ImageInterpolation_Nearest: | |
| 329 ApplyAffineInternal<Orthanc::PixelFormat_SignedGrayscale16, | |
| 330 ImageInterpolation_Nearest>(target, source, a); | |
| 331 break; | |
| 332 | |
| 333 case ImageInterpolation_Bilinear: | |
| 334 ApplyAffineInternal<Orthanc::PixelFormat_SignedGrayscale16, | |
| 335 ImageInterpolation_Bilinear>(target, source, a); | |
| 336 break; | |
| 337 | |
| 338 default: | |
| 339 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 340 } | |
| 341 break; | |
| 342 | |
| 343 case Orthanc::PixelFormat_RGB24: | |
| 344 switch (interpolation) | |
| 345 { | |
| 346 case ImageInterpolation_Nearest: | |
| 347 ApplyAffineInternal<Orthanc::PixelFormat_RGB24, | |
| 348 ImageInterpolation_Nearest>(target, source, a); | |
| 349 break; | |
| 350 | |
| 351 default: | |
| 352 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 353 } | |
| 354 break; | |
| 355 | |
| 356 default: | |
| 357 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 358 } | |
| 359 } | |
| 360 | |
| 361 | |
| 362 template <Orthanc::PixelFormat Format, | |
| 363 ImageInterpolation Interpolation> | |
| 190 | 364 static void ApplyProjectiveInternal(Orthanc::ImageAccessor& target, |
| 365 const Orthanc::ImageAccessor& source, | |
| 366 const Matrix& a, | |
| 367 const Matrix& inva) | |
| 182 | 368 { |
| 369 assert(target.GetFormat() == Format && | |
| 370 source.GetFormat() == Format); | |
| 371 | |
| 372 typedef SubpixelReader<Format, Interpolation> Reader; | |
| 373 typedef typename Reader::PixelType PixelType; | |
| 374 | |
| 375 Reader reader(source); | |
| 376 unsigned int x1, y1, x2, y2; | |
| 377 | |
| 378 const float floatWidth = source.GetWidth(); | |
| 379 const float floatHeight = source.GetHeight(); | |
| 380 | |
| 190 | 381 if (GetProjectiveTransformExtent(x1, y1, x2, y2, a, |
| 182 | 382 source.GetWidth(), source.GetHeight(), |
| 383 target.GetWidth(), target.GetHeight())) | |
| 384 { | |
| 385 const size_t targetPitch = target.GetPitch(); | |
|
191
46cb2eedc2e0
ShearWarpProjectiveTransform
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
190
diff
changeset
|
386 uint8_t *targetRow = reinterpret_cast<uint8_t*> |
|
46cb2eedc2e0
ShearWarpProjectiveTransform
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
190
diff
changeset
|
387 (reinterpret_cast<PixelType*>(target.GetRow(y1)) + x1); |
| 182 | 388 |
| 389 for (unsigned int y = y1; y <= y2; y++) | |
| 390 { | |
| 391 PixelType *p = reinterpret_cast<PixelType*>(targetRow); | |
| 392 | |
| 393 for (unsigned int x = x1; x <= x2; x++) | |
| 394 { | |
| 395 Vector v; | |
| 396 LinearAlgebra::AssignVector(v, static_cast<double>(x) + 0.5, | |
| 397 static_cast<double>(y) + 0.5, 1); | |
| 398 | |
| 399 Vector vv = LinearAlgebra::Product(inva, v); | |
| 400 | |
| 401 assert(!LinearAlgebra::IsCloseToZero(vv[2])); | |
| 402 const double w = 1.0 / vv[2]; | |
| 403 const float sourceX = static_cast<float>(vv[0] * w); | |
| 404 const float sourceY = static_cast<float>(vv[1] * w); | |
| 405 | |
| 406 // Make sure no integer overflow will occur after truncation | |
| 407 // (the static_cast<unsigned int> could otherwise throw an | |
| 190 | 408 // exception in WebAssembly if strong projective effects) |
| 182 | 409 if (sourceX < floatWidth && |
| 410 sourceY < floatHeight) | |
| 411 { | |
| 412 reader.GetValue(*p, sourceX, sourceY); | |
| 413 } | |
| 414 else | |
| 415 { | |
| 416 Reader::Traits::SetZero(*p); | |
| 417 } | |
| 418 | |
| 419 p++; | |
| 420 } | |
| 421 | |
| 422 targetRow += targetPitch; | |
| 423 } | |
| 424 } | |
| 425 } | |
| 426 | |
| 427 | |
| 190 | 428 void ApplyProjectiveTransform(Orthanc::ImageAccessor& target, |
| 429 const Orthanc::ImageAccessor& source, | |
| 430 const Matrix& a, | |
| 431 ImageInterpolation interpolation) | |
| 182 | 432 { |
| 433 if (source.GetFormat() != target.GetFormat()) | |
| 434 { | |
| 435 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
| 436 } | |
| 437 | |
| 438 if (a.size1() != 3 || | |
| 439 a.size2() != 3) | |
| 440 { | |
| 441 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize); | |
| 442 } | |
| 443 | |
| 444 if (interpolation != ImageInterpolation_Nearest && | |
| 445 interpolation != ImageInterpolation_Bilinear) | |
| 446 { | |
| 447 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 448 } | |
| 449 | |
| 450 // Check whether we are dealing with an affine transform | |
| 451 if (LinearAlgebra::IsCloseToZero(a(2, 0)) && | |
| 452 LinearAlgebra::IsCloseToZero(a(2, 1))) | |
| 453 { | |
| 454 double w = a(2, 2); | |
| 455 if (LinearAlgebra::IsCloseToZero(w)) | |
| 456 { | |
| 190 | 457 LOG(ERROR) << "Singular projective matrix"; |
| 182 | 458 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
| 459 } | |
| 460 else | |
| 461 { | |
| 462 ApplyAffineTransform(target, source, | |
| 463 a(0, 0) / w, a(0, 1) / w, a(0, 2) / w, | |
| 464 a(1, 0) / w, a(1, 1) / w, a(1, 2) / w, | |
| 465 interpolation); | |
| 466 return; | |
| 467 } | |
| 468 } | |
| 469 | |
| 470 if (target.GetFormat() == Orthanc::PixelFormat_RGB24) | |
| 471 { | |
| 472 Orthanc::ImageProcessing::Set(target, 0, 0, 0, 255); | |
| 473 } | |
| 474 else | |
| 475 { | |
| 476 Orthanc::ImageProcessing::Set(target, 0); | |
| 477 } | |
| 478 | |
| 479 Matrix inva; | |
| 480 if (!LinearAlgebra::InvertMatrixUnsafe(inva, a)) | |
| 481 { | |
| 482 return; | |
| 483 } | |
| 484 | |
| 485 switch (source.GetFormat()) | |
| 486 { | |
| 487 case Orthanc::PixelFormat_Grayscale8: | |
| 488 switch (interpolation) | |
| 489 { | |
| 490 case ImageInterpolation_Nearest: | |
| 190 | 491 ApplyProjectiveInternal<Orthanc::PixelFormat_Grayscale8, |
| 492 ImageInterpolation_Nearest>(target, source, a, inva); | |
| 182 | 493 break; |
| 494 | |
| 495 case ImageInterpolation_Bilinear: | |
| 190 | 496 ApplyProjectiveInternal<Orthanc::PixelFormat_Grayscale8, |
| 497 ImageInterpolation_Bilinear>(target, source, a, inva); | |
| 182 | 498 break; |
| 499 | |
| 500 default: | |
| 501 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 502 } | |
| 503 break; | |
| 504 | |
| 505 case Orthanc::PixelFormat_Grayscale16: | |
| 506 switch (interpolation) | |
| 507 { | |
| 508 case ImageInterpolation_Nearest: | |
| 190 | 509 ApplyProjectiveInternal<Orthanc::PixelFormat_Grayscale16, |
| 510 ImageInterpolation_Nearest>(target, source, a, inva); | |
| 182 | 511 break; |
| 512 | |
| 513 case ImageInterpolation_Bilinear: | |
| 190 | 514 ApplyProjectiveInternal<Orthanc::PixelFormat_Grayscale16, |
| 515 ImageInterpolation_Bilinear>(target, source, a, inva); | |
| 182 | 516 break; |
| 517 | |
| 518 default: | |
| 519 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 520 } | |
| 521 break; | |
| 522 | |
| 523 case Orthanc::PixelFormat_SignedGrayscale16: | |
| 524 switch (interpolation) | |
| 525 { | |
| 526 case ImageInterpolation_Nearest: | |
| 190 | 527 ApplyProjectiveInternal<Orthanc::PixelFormat_SignedGrayscale16, |
| 528 ImageInterpolation_Nearest>(target, source, a, inva); | |
| 182 | 529 break; |
| 530 | |
| 531 case ImageInterpolation_Bilinear: | |
| 190 | 532 ApplyProjectiveInternal<Orthanc::PixelFormat_SignedGrayscale16, |
| 533 ImageInterpolation_Bilinear>(target, source, a, inva); | |
| 182 | 534 break; |
| 535 | |
| 536 default: | |
| 537 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 538 } | |
| 539 break; | |
| 540 | |
| 541 case Orthanc::PixelFormat_RGB24: | |
| 542 switch (interpolation) | |
| 543 { | |
| 544 case ImageInterpolation_Nearest: | |
| 190 | 545 ApplyProjectiveInternal<Orthanc::PixelFormat_RGB24, |
| 546 ImageInterpolation_Nearest>(target, source, a, inva); | |
| 182 | 547 break; |
| 548 | |
| 549 default: | |
| 550 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 551 } | |
| 552 break; | |
| 553 | |
| 554 default: | |
| 555 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 556 } | |
| 557 } | |
| 558 } |