Mercurial > hg > orthanc-webviewer
annotate Plugin/ParsedDicomImage.cpp @ 38:fec65ef2c7e9
fix
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 03 Jul 2015 10:45:51 +0200 |
| parents | 111689a2c177 |
| children | abdde1dfb3eb |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU Affero General Public License | |
| 8 * as published by the Free Software Foundation, either version 3 of | |
| 9 * the License, or (at your option) any later version. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, but | |
| 12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * Affero General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU Affero General Public License | |
| 17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 **/ | |
| 19 | |
| 20 | |
| 21 #include "ParsedDicomImage.h" | |
| 22 | |
| 26 | 23 #include "../Orthanc/Core/OrthancException.h" |
| 24 #include "../Orthanc/Core/Toolbox.h" | |
| 25 #include "../Orthanc/Core/ImageFormats/ImageProcessing.h" | |
| 26 #include "../Orthanc/Core/ImageFormats/ImageBuffer.h" | |
| 31 | 27 #include "../Orthanc/Core/ImageFormats/PngReader.h" |
| 0 | 28 #include "JpegWriter.h" |
| 29 #include "ViewerToolbox.h" | |
| 30 | |
| 31 #include <gdcmImageReader.h> | |
| 32 #include <gdcmImageChangePlanarConfiguration.h> | |
| 33 #include <gdcmImageChangePhotometricInterpretation.h> | |
| 34 #include <boost/lexical_cast.hpp> | |
| 35 #include <boost/math/special_functions/round.hpp> | |
| 36 | |
| 26 | 37 #include "../Orthanc/Resources/ThirdParty/base64/base64.h" |
| 0 | 38 |
| 39 | |
| 40 namespace OrthancPlugins | |
| 41 { | |
| 31 | 42 class ParsedDicomImage::PImpl |
| 0 | 43 { |
| 31 | 44 private: |
| 45 OrthancPluginContext* context_; | |
| 46 std::string instanceId_; | |
| 0 | 47 gdcm::ImageReader reader_; |
| 48 std::auto_ptr<gdcm::ImageChangePhotometricInterpretation> photometric_; | |
| 49 std::auto_ptr<gdcm::ImageChangePlanarConfiguration> interleaved_; | |
| 50 std::string decoded_; | |
| 31 | 51 Orthanc::PngReader png_; |
| 52 bool insidePng_; | |
| 53 bool isDecoded_; | |
| 54 | |
| 55 bool DecodeUsingGdcm() | |
| 56 { | |
| 57 // Change photometric interpretation, if required | |
| 58 { | |
| 59 const gdcm::Image& image = GetImage(); | |
| 60 if (image.GetPixelFormat().GetSamplesPerPixel() == 1) | |
| 61 { | |
| 62 if (image.GetPhotometricInterpretation() != gdcm::PhotometricInterpretation::MONOCHROME1 && | |
| 63 image.GetPhotometricInterpretation() != gdcm::PhotometricInterpretation::MONOCHROME2) | |
| 64 { | |
| 65 photometric_.reset(new gdcm::ImageChangePhotometricInterpretation()); | |
| 66 photometric_->SetInput(image); | |
| 67 photometric_->SetPhotometricInterpretation(gdcm::PhotometricInterpretation::MONOCHROME2); | |
| 68 if (!photometric_->Change() || | |
| 69 GetImage().GetPhotometricInterpretation() != gdcm::PhotometricInterpretation::MONOCHROME2) | |
| 70 { | |
| 71 OrthancPluginLogWarning(context_, "GDCM cannot change the photometric interpretation"); | |
| 72 return false; | |
| 73 } | |
| 74 } | |
| 75 } | |
| 76 else | |
| 77 { | |
| 78 if (image.GetPixelFormat().GetSamplesPerPixel() == 3 && | |
| 79 image.GetPhotometricInterpretation() != gdcm::PhotometricInterpretation::RGB) | |
| 80 { | |
| 81 photometric_.reset(new gdcm::ImageChangePhotometricInterpretation()); | |
| 82 photometric_->SetInput(image); | |
| 83 photometric_->SetPhotometricInterpretation(gdcm::PhotometricInterpretation::RGB); | |
| 84 if (!photometric_->Change() || | |
| 85 GetImage().GetPhotometricInterpretation() != gdcm::PhotometricInterpretation::RGB) | |
| 86 { | |
| 87 OrthancPluginLogWarning(context_, "GDCM cannot change the photometric interpretation"); | |
| 88 return false; | |
| 89 } | |
| 90 } | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 // Possibly convert planar configuration to interleaved | |
| 95 { | |
| 96 const gdcm::Image& image = GetImage(); | |
| 97 if (image.GetPlanarConfiguration() != 0 && | |
| 98 image.GetPixelFormat().GetSamplesPerPixel() != 1) | |
| 99 { | |
| 100 interleaved_.reset(new gdcm::ImageChangePlanarConfiguration()); | |
| 101 interleaved_->SetInput(image); | |
| 102 if (!interleaved_->Change() || | |
| 103 GetImage().GetPlanarConfiguration() != 0) | |
| 104 { | |
| 105 OrthancPluginLogWarning(context_, "GDCM cannot change the planar configuration to interleaved"); | |
| 106 return false; | |
| 107 } | |
| 108 } | |
| 109 } | |
| 110 | |
| 111 // Decode the image to the memory buffer | |
| 112 { | |
| 113 const gdcm::Image& image = GetImage(); | |
| 114 decoded_.resize(image.GetBufferLength()); | |
| 115 | |
| 116 if (decoded_.size() > 0) | |
| 117 { | |
| 118 image.GetBuffer(&decoded_[0]); | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 return true; | |
| 123 } | |
| 124 | |
| 125 | |
| 126 bool DecodeUsingOrthanc() | |
| 127 { | |
| 128 /** | |
| 129 * This is a DICOM image that cannot be properly decoded by | |
| 130 * GDCM. Let's give a try with the Orthanc built-in decoder. | |
| 131 **/ | |
| 132 std::string file = "/instances/" + instanceId_; | |
| 133 | |
| 134 const gdcm::Image& image = GetImage(); | |
| 135 if (image.GetPixelFormat().GetSamplesPerPixel() == 3 || | |
| 136 image.GetPixelFormat().GetSamplesPerPixel() == 4) | |
| 137 { | |
| 138 file += "/preview"; | |
| 139 } | |
| 140 else | |
| 141 { | |
| 142 file += "/image-uint16"; | |
| 143 } | |
| 144 | |
| 145 std::string png; | |
| 146 if (!GetStringFromOrthanc(png, context_, file)) | |
| 147 { | |
| 148 return false; | |
| 149 } | |
| 150 else | |
| 151 { | |
| 152 try | |
| 153 { | |
| 154 png_.ReadFromMemory(png); | |
| 155 insidePng_ = true; | |
| 156 return true; | |
| 157 } | |
| 158 catch (Orthanc::OrthancException&) | |
| 159 { | |
| 160 return false; | |
| 161 } | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 | |
| 166 bool Decode() | |
| 167 { | |
| 168 if (isDecoded_) | |
| 169 { | |
| 170 return true; | |
| 171 } | |
| 172 | |
| 173 if (DecodeUsingGdcm()) | |
| 174 { | |
| 175 isDecoded_ = true; | |
| 176 return true; | |
| 177 } | |
| 178 | |
| 179 // GDCM cannot decode this image, try and use Orthanc built-in functions | |
| 180 photometric_.reset(); | |
| 181 interleaved_.reset(); | |
| 182 decoded_.clear(); | |
| 183 | |
| 184 if (DecodeUsingOrthanc()) | |
| 185 { | |
| 186 isDecoded_ = true; | |
| 187 return true; | |
| 188 } | |
| 189 else | |
| 190 { | |
| 191 return false; | |
| 192 } | |
| 193 } | |
| 194 | |
| 195 | |
| 196 public: | |
| 197 PImpl(OrthancPluginContext* context, | |
| 198 const std::string& instanceId) : | |
| 199 context_(context), | |
| 200 instanceId_(instanceId), | |
| 201 insidePng_(false), | |
| 202 isDecoded_(false) | |
| 203 { | |
| 204 } | |
| 205 | |
| 206 | |
| 207 const gdcm::DataSet& GetDataSet() const | |
| 208 { | |
| 209 return reader_.GetFile().GetDataSet(); | |
| 210 } | |
| 211 | |
| 0 | 212 |
| 213 const gdcm::Image& GetImage() const | |
| 214 { | |
| 215 if (interleaved_.get() != NULL) | |
| 216 { | |
| 217 return interleaved_->GetOutput(); | |
| 218 } | |
| 219 | |
| 220 if (photometric_.get() != NULL) | |
| 221 { | |
| 222 return photometric_->GetOutput(); | |
| 223 } | |
| 224 | |
| 225 return reader_.GetImage(); | |
| 226 } | |
| 227 | |
| 228 | |
| 31 | 229 void Parse(const std::string& dicom) |
| 230 { | |
| 231 // Prepare a memory stream over the DICOM instance | |
| 232 std::stringstream stream(dicom); | |
| 233 | |
| 234 // Parse the DICOM instance using GDCM | |
| 235 reader_.SetStream(stream); | |
| 236 if (!reader_.Read()) | |
| 237 { | |
| 238 throw Orthanc::OrthancException("GDCM cannot extract an image from this DICOM instance"); | |
| 239 } | |
| 240 } | |
| 241 | |
| 242 | |
| 243 bool GetAccessor(Orthanc::ImageAccessor& accessor) | |
| 0 | 244 { |
| 31 | 245 if (!Decode()) |
| 246 { | |
| 247 return false; | |
| 248 } | |
| 249 | |
| 250 if (insidePng_) | |
| 251 { | |
| 252 // The image was decoded using Orthanc's built-in REST API | |
| 253 accessor = png_; | |
| 254 return true; | |
| 255 } | |
| 256 | |
| 257 const gdcm::Image& image = GetImage(); | |
| 258 | |
| 259 size_t size = decoded_.size(); | |
| 260 void* buffer = (size ? &decoded_[0] : NULL); | |
| 261 unsigned int height = image.GetRows(); | |
| 262 unsigned int width = image.GetColumns(); | |
| 263 | |
| 264 if (image.GetPixelFormat().GetSamplesPerPixel() == 1 && | |
| 265 (image.GetPhotometricInterpretation() == gdcm::PhotometricInterpretation::MONOCHROME1 || | |
| 266 image.GetPhotometricInterpretation() == gdcm::PhotometricInterpretation::MONOCHROME2)) | |
| 267 { | |
| 268 switch (image.GetPixelFormat()) | |
| 269 { | |
| 270 case gdcm::PixelFormat::UINT16: | |
| 271 accessor.AssignWritable(Orthanc::PixelFormat_Grayscale16, width, height, 2 * width, buffer); | |
| 272 return true; | |
| 273 | |
| 274 case gdcm::PixelFormat::INT16: | |
| 275 accessor.AssignWritable(Orthanc::PixelFormat_SignedGrayscale16, width, height, 2 * width, buffer); | |
| 276 return true; | |
| 277 | |
| 278 case gdcm::PixelFormat::UINT8: | |
| 279 accessor.AssignWritable(Orthanc::PixelFormat_Grayscale8, width, height, width, buffer); | |
| 280 return true; | |
| 281 | |
| 282 default: | |
| 283 return false; | |
| 284 } | |
| 285 } | |
| 286 else if (image.GetPixelFormat().GetSamplesPerPixel() == 3 && | |
| 287 image.GetPhotometricInterpretation() == gdcm::PhotometricInterpretation::RGB) | |
| 288 { | |
| 289 switch (image.GetPixelFormat()) | |
| 290 { | |
| 291 case gdcm::PixelFormat::UINT8: | |
| 292 accessor.AssignWritable(Orthanc::PixelFormat_RGB24, width, height, 3 * width, buffer); | |
| 293 return true; | |
| 294 | |
| 295 default: | |
| 296 return false; | |
| 297 } | |
| 298 } | |
| 299 | |
| 300 return false; | |
| 0 | 301 } |
| 302 }; | |
| 303 | |
| 304 | |
| 305 template <typename TargetType, typename SourceType> | |
| 306 static void ChangeDynamics(Orthanc::ImageAccessor& target, | |
| 307 const Orthanc::ImageAccessor& source, | |
| 308 SourceType source1, TargetType target1, | |
| 309 SourceType source2, TargetType target2) | |
| 310 { | |
| 311 if (source.GetWidth() != target.GetWidth() || | |
| 312 source.GetHeight() != target.GetHeight()) | |
| 313 { | |
| 314 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize); | |
| 315 } | |
| 316 | |
| 317 float scale = static_cast<float>(target2 - target1) / static_cast<float>(source2 - source1); | |
| 318 float offset = static_cast<float>(target1) - scale * static_cast<float>(source1); | |
| 319 | |
| 320 const float minValue = static_cast<float>(std::numeric_limits<TargetType>::min()); | |
| 321 const float maxValue = static_cast<float>(std::numeric_limits<TargetType>::max()); | |
| 322 | |
| 323 for (unsigned int y = 0; y < source.GetHeight(); y++) | |
| 324 { | |
| 325 const SourceType* p = reinterpret_cast<const SourceType*>(source.GetConstRow(y)); | |
| 326 TargetType* q = reinterpret_cast<TargetType*>(target.GetRow(y)); | |
| 327 | |
| 328 for (unsigned int x = 0; x < source.GetWidth(); x++, p++, q++) | |
| 329 { | |
| 330 float v = (scale * static_cast<float>(*p)) + offset; | |
| 331 | |
| 332 if (v > maxValue) | |
| 333 { | |
| 334 *q = std::numeric_limits<TargetType>::max(); | |
| 335 } | |
| 336 else if (v < minValue) | |
| 337 { | |
| 338 *q = std::numeric_limits<TargetType>::min(); | |
| 339 } | |
| 340 else | |
| 341 { | |
| 342 *q = static_cast<TargetType>(boost::math::iround(v)); | |
| 343 } | |
| 344 } | |
| 345 } | |
| 346 } | |
| 347 | |
| 348 | |
| 31 | 349 ParsedDicomImage::ParsedDicomImage(OrthancPluginContext* context, |
| 350 const std::string& instanceId) : | |
| 351 pimpl_(new PImpl(context, instanceId)) | |
| 0 | 352 { |
| 31 | 353 std::string file = "/instances/" + instanceId + "/file"; |
| 0 | 354 |
| 31 | 355 std::string dicom; |
| 356 if (!GetStringFromOrthanc(dicom, context, file)) | |
| 0 | 357 { |
| 31 | 358 throw Orthanc::OrthancException(Orthanc::ErrorCode_UnknownResource); |
| 0 | 359 } |
| 360 | |
| 31 | 361 pimpl_->Parse(dicom); |
| 0 | 362 } |
| 363 | |
| 364 | |
| 365 bool ParsedDicomImage::GetTag(std::string& result, | |
| 366 uint16_t group, | |
| 367 uint16_t element, | |
| 368 bool stripSpaces) | |
| 369 { | |
| 370 const gdcm::Tag tag(group, element); | |
| 371 | |
| 372 if (pimpl_->GetDataSet().FindDataElement(tag)) | |
| 373 { | |
| 374 const gdcm::ByteValue* value = pimpl_->GetDataSet().GetDataElement(tag).GetByteValue(); | |
| 375 if (value) | |
| 376 { | |
| 377 result = std::string(value->GetPointer(), value->GetLength()); | |
| 378 | |
| 379 if (stripSpaces) | |
| 380 { | |
| 381 result = Orthanc::Toolbox::StripSpaces(result); | |
| 382 } | |
| 383 | |
| 384 return true; | |
| 385 } | |
| 386 } | |
| 387 | |
| 388 return false; | |
| 389 } | |
| 390 | |
| 391 | |
| 392 bool ParsedDicomImage::GetCornerstoneMetadata(Json::Value& json) | |
| 393 { | |
| 394 using namespace Orthanc; | |
| 395 | |
| 396 ImageAccessor accessor; | |
| 31 | 397 if (!pimpl_->GetAccessor(accessor)) |
| 0 | 398 { |
| 399 return false; | |
| 400 } | |
| 401 | |
| 402 float windowCenter, windowWidth; | |
| 403 | |
| 404 switch (accessor.GetFormat()) | |
| 405 { | |
| 406 case PixelFormat_Grayscale8: | |
| 407 case PixelFormat_Grayscale16: | |
| 408 case PixelFormat_SignedGrayscale16: | |
| 409 { | |
| 410 int64_t a, b; | |
| 411 Orthanc::ImageProcessing::GetMinMaxValue(a, b, accessor); | |
| 412 json["minPixelValue"] = (a < 0 ? static_cast<int32_t>(a) : 0); | |
| 413 json["maxPixelValue"] = (b > 0 ? static_cast<int32_t>(b) : 1); | |
| 414 json["color"] = false; | |
| 415 | |
| 416 windowCenter = static_cast<float>(a + b) / 2.0f; | |
| 417 | |
| 418 if (a == b) | |
| 419 { | |
|
1
828c61fc8253
default window width set to 256
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
420 windowWidth = 256.0f; // Arbitrary value |
| 0 | 421 } |
| 422 else | |
| 423 { | |
| 424 windowWidth = static_cast<float>(b - a) / 2.0f; | |
| 425 } | |
| 426 | |
| 427 break; | |
| 428 } | |
| 429 | |
| 430 case PixelFormat_RGB24: | |
| 431 json["minPixelValue"] = 0; | |
| 432 json["maxPixelValue"] = 255; | |
| 433 json["color"] = true; | |
| 434 windowCenter = 127.5f; | |
|
1
828c61fc8253
default window width set to 256
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
435 windowWidth = 256.0f; |
| 0 | 436 break; |
| 437 | |
| 438 default: | |
| 439 return false; | |
| 440 } | |
| 441 | |
| 442 const gdcm::Image& image = pimpl_->GetImage(); | |
| 443 json["slope"] = image.GetSlope(); | |
| 444 json["intercept"] = image.GetIntercept(); | |
| 445 json["rows"] = image.GetRows(); | |
| 446 json["columns"] = image.GetColumns(); | |
| 447 json["height"] = image.GetRows(); | |
| 448 json["width"] = image.GetColumns(); | |
| 449 json["columnPixelSpacing"] = image.GetSpacing(1); | |
| 450 json["rowPixelSpacing"] = image.GetSpacing(0); | |
| 451 | |
| 452 json["windowCenter"] = windowCenter * image.GetSlope() + image.GetIntercept(); | |
| 453 json["windowWidth"] = windowWidth * image.GetSlope(); | |
| 454 | |
| 455 try | |
| 456 { | |
| 457 std::string width, center; | |
| 458 if (GetTag(center, 0x0028, 0x1050 /*DICOM_TAG_WINDOW_CENTER*/) && | |
| 459 GetTag(width, 0x0028, 0x1051 /*DICOM_TAG_WINDOW_WIDTH*/)) | |
| 460 { | |
| 461 float a = boost::lexical_cast<float>(width); | |
| 462 float b = boost::lexical_cast<float>(center); | |
| 463 json["windowWidth"] = a; | |
| 464 json["windowCenter"] = b; | |
| 465 } | |
| 466 } | |
| 467 catch (boost::bad_lexical_cast&) | |
| 468 { | |
| 469 } | |
| 470 | |
| 471 return true; | |
| 472 } | |
| 473 | |
| 474 | |
| 475 bool ParsedDicomImage::EncodeUsingDeflate(Json::Value& result, | |
| 476 uint8_t compressionLevel /* between 0 and 9 */) | |
| 477 { | |
| 478 using namespace Orthanc; | |
| 479 | |
| 480 ImageAccessor accessor; | |
| 31 | 481 if (!pimpl_->GetAccessor(accessor)) |
| 0 | 482 { |
| 483 return false; | |
| 484 } | |
| 485 | |
| 486 result = Json::objectValue; | |
| 487 result["Orthanc"] = Json::objectValue; | |
| 488 if (!GetCornerstoneMetadata(result)) | |
| 489 { | |
| 490 return false; | |
| 491 } | |
| 492 | |
| 493 ImageBuffer buffer; | |
| 494 buffer.SetMinimalPitchForced(true); | |
| 495 | |
| 496 ImageAccessor converted; | |
| 497 | |
| 498 | |
| 499 switch (accessor.GetFormat()) | |
| 500 { | |
| 501 case Orthanc::PixelFormat_RGB24: | |
| 502 converted = accessor; | |
| 503 break; | |
| 504 | |
| 505 case Orthanc::PixelFormat_Grayscale8: | |
| 506 case Orthanc::PixelFormat_Grayscale16: | |
| 507 buffer.SetFormat(Orthanc::PixelFormat_SignedGrayscale16); | |
| 508 buffer.SetWidth(accessor.GetWidth()); | |
| 509 buffer.SetHeight(accessor.GetHeight()); | |
| 510 converted = buffer.GetAccessor(); | |
| 511 ImageProcessing::Convert(converted, accessor); | |
| 512 break; | |
| 513 | |
| 514 case Orthanc::PixelFormat_SignedGrayscale16: | |
| 515 converted = accessor; | |
| 516 break; | |
| 517 | |
| 518 default: | |
| 519 // Unsupported pixel format | |
| 520 return false; | |
| 521 } | |
| 522 | |
| 523 // Sanity check: The pitch must be minimal | |
| 524 assert(converted.GetSize() == converted.GetWidth() * converted.GetHeight() * | |
| 525 GetBytesPerPixel(converted.GetFormat())); | |
| 526 result["Orthanc"]["Compression"] = "Deflate"; | |
| 527 result["sizeInBytes"] = converted.GetSize(); | |
| 528 | |
| 529 std::string z; | |
| 530 if (!CompressUsingDeflate(z, converted.GetConstBuffer(), converted.GetSize(), compressionLevel)) | |
| 531 { | |
| 532 return false; | |
| 533 } | |
| 534 | |
| 535 result["Orthanc"]["PixelData"] = base64_encode(z); | |
| 536 | |
| 537 return true; | |
| 538 } | |
| 539 | |
| 540 | |
| 541 | |
| 542 bool ParsedDicomImage::EncodeUsingJpeg(Json::Value& result, | |
| 543 uint8_t quality /* between 0 and 100 */) | |
| 544 { | |
| 545 using namespace Orthanc; | |
| 546 | |
| 547 ImageAccessor accessor; | |
| 31 | 548 if (!pimpl_->GetAccessor(accessor)) |
| 0 | 549 { |
| 550 return false; | |
| 551 } | |
| 552 | |
| 553 result = Json::objectValue; | |
| 554 result["Orthanc"] = Json::objectValue; | |
| 555 GetCornerstoneMetadata(result); | |
| 556 | |
| 557 ImageBuffer buffer; | |
| 558 buffer.SetMinimalPitchForced(true); | |
| 559 | |
| 560 ImageAccessor converted; | |
| 561 | |
| 562 if (accessor.GetFormat() == Orthanc::PixelFormat_Grayscale8 || | |
| 563 accessor.GetFormat() == Orthanc::PixelFormat_RGB24) | |
| 564 { | |
| 565 result["Orthanc"]["Stretched"] = false; | |
| 566 converted = accessor; | |
| 567 } | |
| 568 else if (accessor.GetFormat() == Orthanc::PixelFormat_Grayscale16 || | |
| 569 accessor.GetFormat() == Orthanc::PixelFormat_SignedGrayscale16) | |
| 570 { | |
| 571 result["Orthanc"]["Stretched"] = true; | |
| 572 buffer.SetFormat(Orthanc::PixelFormat_Grayscale8); | |
| 573 buffer.SetWidth(accessor.GetWidth()); | |
| 574 buffer.SetHeight(accessor.GetHeight()); | |
| 575 converted = buffer.GetAccessor(); | |
| 576 | |
| 577 int64_t a, b; | |
| 578 Orthanc::ImageProcessing::GetMinMaxValue(a, b, accessor); | |
| 579 result["Orthanc"]["StretchLow"] = static_cast<int32_t>(a); | |
| 580 result["Orthanc"]["StretchHigh"] = static_cast<int32_t>(b); | |
| 581 | |
| 582 if (accessor.GetFormat() == Orthanc::PixelFormat_Grayscale16) | |
| 583 { | |
| 584 ChangeDynamics<uint8_t, uint16_t>(converted, accessor, a, 0, b, 255); | |
| 585 } | |
| 586 else | |
| 587 { | |
| 588 ChangeDynamics<uint8_t, int16_t>(converted, accessor, a, 0, b, 255); | |
| 589 } | |
| 590 } | |
| 591 else | |
| 592 { | |
| 593 return false; | |
| 594 } | |
| 595 | |
| 596 result["Orthanc"]["Compression"] = "Jpeg"; | |
| 597 result["sizeInBytes"] = converted.GetSize(); | |
| 598 | |
| 599 std::string jpeg; | |
| 600 OrthancPlugins::JpegWriter writer; | |
| 601 writer.SetQuality(quality); | |
| 602 writer.WriteToMemory(jpeg, converted); | |
| 603 result["Orthanc"]["PixelData"] = base64_encode(jpeg); | |
| 604 return true; | |
| 605 } | |
| 26 | 606 } |