Mercurial > hg > orthanc-wsi
annotate Framework/Inputs/DicomPyramidInstance.cpp @ 64:63d0a5c74460
DicomPyramidInstance::Serialize
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 25 Nov 2016 18:34:17 +0100 |
parents | f45cec2c32e2 |
children | c619c8bd72ed |
rev | line source |
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0 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2016 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 | |
16
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21 #include "../PrecompiledHeadersWSI.h" |
0 | 22 #include "DicomPyramidInstance.h" |
23 | |
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24 #include "../../Resources/Orthanc/Core/Logging.h" |
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25 #include "../../Resources/Orthanc/Core/OrthancException.h" |
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26 #include "../../Resources/Orthanc/Core/Toolbox.h" |
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27 #include "../../Resources/Orthanc/Plugins/Samples/Common/DicomDatasetReader.h" |
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28 #include "../../Resources/Orthanc/Plugins/Samples/Common/FullOrthancDataset.h" |
0 | 29 #include "../DicomToolbox.h" |
30 | |
31 #include <cassert> | |
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32 #include <json/writer.h> |
0 | 33 |
34 namespace OrthancWSI | |
35 { | |
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36 static ImageCompression DetectImageCompression(OrthancPlugins::IOrthancConnection& orthanc, |
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37 const std::string& instanceId) |
0 | 38 { |
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39 using namespace OrthancPlugins; |
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40 |
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41 DicomDatasetReader header(new FullOrthancDataset |
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42 (orthanc, "/instances/" + instanceId + "/header")); |
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43 |
0 | 44 std::string s = Orthanc::Toolbox::StripSpaces |
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45 (header.GetMandatoryStringValue(DICOM_TAG_TRANSFER_SYNTAX_UID)); |
0 | 46 |
47 if (s == "1.2.840.10008.1.2" || | |
48 s == "1.2.840.10008.1.2.1") | |
49 { | |
50 return ImageCompression_None; | |
51 } | |
52 else if (s == "1.2.840.10008.1.2.4.50") | |
53 { | |
54 return ImageCompression_Jpeg; | |
55 } | |
56 else if (s == "1.2.840.10008.1.2.4.90" || | |
57 s == "1.2.840.10008.1.2.4.91") | |
58 { | |
59 return ImageCompression_Jpeg2000; | |
60 } | |
61 else | |
62 { | |
63 LOG(ERROR) << "Unsupported transfer syntax: " << s; | |
64 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
65 } | |
66 } | |
67 | |
68 | |
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69 static Orthanc::PixelFormat DetectPixelFormat(OrthancPlugins::DicomDatasetReader& reader) |
0 | 70 { |
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71 using namespace OrthancPlugins; |
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72 |
0 | 73 std::string photometric = Orthanc::Toolbox::StripSpaces |
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74 (reader.GetMandatoryStringValue(DICOM_TAG_PHOTOMETRIC_INTERPRETATION)); |
0 | 75 |
76 if (photometric == "PALETTE") | |
77 { | |
78 LOG(ERROR) << "Unsupported photometric interpretation: " << photometric; | |
79 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
80 } | |
81 | |
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82 unsigned int bitsStored = reader.GetUnsignedIntegerValue(DICOM_TAG_BITS_STORED); |
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83 unsigned int samplesPerPixel = reader.GetUnsignedIntegerValue(DICOM_TAG_SAMPLES_PER_PIXEL); |
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84 bool isSigned = (reader.GetUnsignedIntegerValue(DICOM_TAG_PIXEL_REPRESENTATION) != 0); |
0 | 85 |
86 if (bitsStored == 8 && | |
87 samplesPerPixel == 1 && | |
88 !isSigned) | |
89 { | |
90 return Orthanc::PixelFormat_Grayscale8; | |
91 } | |
92 else if (bitsStored == 8 && | |
93 samplesPerPixel == 3 && | |
94 !isSigned) | |
95 { | |
96 return Orthanc::PixelFormat_RGB24; | |
97 } | |
98 else | |
99 { | |
100 LOG(ERROR) << "Unsupported pixel format"; | |
101 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
102 } | |
103 } | |
104 | |
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105 |
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106 ImageCompression DicomPyramidInstance::GetImageCompression(OrthancPlugins::IOrthancConnection& orthanc) |
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107 { |
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108 /** |
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109 * Lazy detection of the image compression using the transfer |
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110 * syntax stored inside the DICOM header. Given the fact that |
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111 * reading the header is a time-consuming operation (it implies |
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112 * the decoding of the DICOM image by Orthanc, whereas the "/tags" |
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113 * endpoint only reads the "DICOM-as-JSON" attachment), the |
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114 * "/header" REST call is delayed until it is really required. |
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115 **/ |
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116 |
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117 if (!hasCompression_) |
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118 { |
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119 compression_ = DetectImageCompression(orthanc, instanceId_); |
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120 hasCompression_ = true; |
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121 } |
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122 |
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123 return compression_; |
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124 } |
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125 |
0 | 126 |
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127 DicomPyramidInstance::DicomPyramidInstance(OrthancPlugins::IOrthancConnection& orthanc, |
0 | 128 const std::string& instanceId) : |
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129 instanceId_(instanceId), |
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130 hasCompression_(false) |
0 | 131 { |
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132 using namespace OrthancPlugins; |
0 | 133 |
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134 DicomDatasetReader reader(new FullOrthancDataset(orthanc, "/instances/" + instanceId + "/tags")); |
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135 |
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136 if (reader.GetMandatoryStringValue(DICOM_TAG_SOP_CLASS_UID) != "1.2.840.10008.5.1.4.1.1.77.1.6" || |
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137 reader.GetMandatoryStringValue(DICOM_TAG_MODALITY) != "SM") |
0 | 138 { |
139 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
140 } | |
141 | |
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142 format_ = DetectPixelFormat(reader); |
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143 tileWidth_ = reader.GetUnsignedIntegerValue(DICOM_TAG_COLUMNS); |
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144 tileHeight_ = reader.GetUnsignedIntegerValue(DICOM_TAG_ROWS); |
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145 totalWidth_ = reader.GetUnsignedIntegerValue(DICOM_TAG_TOTAL_PIXEL_MATRIX_COLUMNS); |
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146 totalHeight_ = reader.GetUnsignedIntegerValue(DICOM_TAG_TOTAL_PIXEL_MATRIX_ROWS); |
0 | 147 |
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148 size_t countFrames; |
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149 if (!reader.GetDataset().GetSequenceSize(countFrames, DICOM_TAG_PER_FRAME_FUNCTIONAL_GROUPS_SEQUENCE)) |
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150 { |
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151 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); |
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152 } |
0 | 153 |
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154 if (countFrames != reader.GetUnsignedIntegerValue(DICOM_TAG_NUMBER_OF_FRAMES)) |
0 | 155 { |
156 LOG(ERROR) << "Mismatch between the number of frames in instance: " << instanceId; | |
157 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
158 } | |
159 | |
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160 frames_.resize(countFrames); |
0 | 161 |
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162 for (size_t i = 0; i < countFrames; i++) |
0 | 163 { |
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164 int xx = reader.GetIntegerValue(DicomPath(DICOM_TAG_PER_FRAME_FUNCTIONAL_GROUPS_SEQUENCE, i, |
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165 DICOM_TAG_PLANE_POSITION_SLIDE_SEQUENCE, 0, |
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166 DICOM_TAG_COLUMN_POSITION_IN_TOTAL_IMAGE_PIXEL_MATRIX)); |
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167 |
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168 int yy = reader.GetIntegerValue(DicomPath(DICOM_TAG_PER_FRAME_FUNCTIONAL_GROUPS_SEQUENCE, i, |
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169 DICOM_TAG_PLANE_POSITION_SLIDE_SEQUENCE, 0, |
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170 DICOM_TAG_ROW_POSITION_IN_TOTAL_IMAGE_PIXEL_MATRIX)); |
0 | 171 |
172 // "-1", because coordinates are shifted by 1 in DICOM | |
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173 xx -= 1; |
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174 yy -= 1; |
0 | 175 |
176 unsigned int x = static_cast<unsigned int>(xx); | |
177 unsigned int y = static_cast<unsigned int>(yy); | |
178 | |
179 if (xx < 0 || | |
180 yy < 0 || | |
181 x % tileWidth_ != 0 || | |
182 y % tileHeight_ != 0 || | |
183 x >= totalWidth_ || | |
184 y >= totalHeight_) | |
185 { | |
186 LOG(ERROR) << "Frame " << i << " with unexpected tile location (" | |
187 << x << "," << y << ") in instance: " << instanceId; | |
188 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
189 } | |
190 | |
191 frames_[i].first = x / tileWidth_; | |
192 frames_[i].second = y / tileHeight_; | |
193 } | |
194 } | |
195 | |
196 | |
197 unsigned int DicomPyramidInstance::GetFrameLocationX(size_t frame) const | |
198 { | |
199 assert(frame < frames_.size()); | |
200 return frames_[frame].first; | |
201 } | |
202 | |
203 | |
204 unsigned int DicomPyramidInstance::GetFrameLocationY(size_t frame) const | |
205 { | |
206 assert(frame < frames_.size()); | |
207 return frames_[frame].second; | |
208 } | |
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209 |
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210 |
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211 void DicomPyramidInstance::Serialize(std::string& result) const |
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212 { |
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213 Json::Value frames = Json::arrayValue; |
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214 for (size_t i = 0; i < frames_.size(); i++) |
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215 { |
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216 Json::Value frame = Json::arrayValue; |
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217 frame.append(frames_[i].first); |
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218 frame.append(frames_[i].second); |
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219 |
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220 frames.append(frame); |
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221 } |
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222 |
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223 Json::Value value; |
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224 value["PixelFormat"] = Orthanc::EnumerationToString(format_); |
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225 value["TileHeight"] = tileHeight_; |
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226 value["TileWidth"] = tileWidth_; |
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227 value["TotalHeight"] = totalHeight_; |
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228 value["TotalWidth"] = totalWidth_; |
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229 value["Frames"] = frames; |
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230 |
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231 Json::FastWriter writer; |
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232 result = writer.write(value); |
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233 } |
0 | 234 } |