Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/DicomStructureSet.cpp @ 126:c9e88e7935a4 wasm
rt-struct projection
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 08 Nov 2017 17:27:38 +0100 |
parents | 44fc253d4876 |
children | 3e6163a53b16 |
rev | line source |
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0 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
40
7207a407bcd8
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5 * Copyright (C) 2017 Osimis, Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
47 | 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. | |
0 | 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 | |
47 | 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 | |
0 | 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 **/ | |
20 | |
21 | |
22 #include "DicomStructureSet.h" | |
23 | |
35 | 24 #include "../Toolbox/MessagingToolbox.h" |
0 | 25 |
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26 #include <Core/Logging.h> |
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27 #include <Core/OrthancException.h> |
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28 #include <Plugins/Samples/Common/FullOrthancDataset.h> |
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29 #include <Plugins/Samples/Common/DicomDatasetReader.h> |
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30 |
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31 #include <limits> |
0 | 32 #include <stdio.h> |
33 #include <boost/lexical_cast.hpp> | |
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34 #include <boost/geometry.hpp> |
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35 #include <boost/geometry/geometries/point_xy.hpp> |
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36 #include <boost/geometry/geometries/polygon.hpp> |
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37 |
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38 typedef boost::geometry::model::d2::point_xy<double> BoostPoint; |
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39 typedef boost::geometry::model::polygon<BoostPoint> BoostPolygon; |
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40 typedef boost::geometry::model::multi_polygon<BoostPolygon> BoostMultiPolygon; |
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41 |
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42 |
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43 static void Union(BoostMultiPolygon& output, |
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44 std::vector<BoostPolygon>& input) |
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45 { |
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46 for (size_t i = 0; i < input.size(); i++) |
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47 { |
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48 boost::geometry::correct(input[i]); |
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49 } |
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50 |
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51 if (input.size() == 0) |
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52 { |
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53 output.clear(); |
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54 } |
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55 else if (input.size() == 1) |
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56 { |
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57 output.resize(1); |
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58 output[0] = input[0]; |
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59 } |
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60 else |
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61 { |
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62 boost::geometry::union_(input[0], input[1], output); |
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63 |
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64 for (size_t i = 0; i < input.size(); i++) |
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65 { |
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66 BoostMultiPolygon tmp; |
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67 boost::geometry::union_(output, input[i], tmp); |
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68 output = tmp; |
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69 } |
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70 } |
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71 } |
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72 |
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73 |
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74 static BoostPolygon CreateRectangle(float x1, float y1, |
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75 float x2, float y2) |
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76 { |
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77 BoostPolygon r; |
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78 boost::geometry::append(r, BoostPoint(x1, y1)); |
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79 boost::geometry::append(r, BoostPoint(x1, y2)); |
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80 boost::geometry::append(r, BoostPoint(x2, y2)); |
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81 boost::geometry::append(r, BoostPoint(x2, y1)); |
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82 return r; |
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83 } |
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84 |
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85 |
0 | 86 |
87 namespace OrthancStone | |
88 { | |
32 | 89 static const OrthancPlugins::DicomTag DICOM_TAG_CONTOUR_GEOMETRIC_TYPE(0x3006, 0x0042); |
90 static const OrthancPlugins::DicomTag DICOM_TAG_CONTOUR_IMAGE_SEQUENCE(0x3006, 0x0016); | |
91 static const OrthancPlugins::DicomTag DICOM_TAG_CONTOUR_SEQUENCE(0x3006, 0x0040); | |
122
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92 static const OrthancPlugins::DicomTag DICOM_TAG_CONTOUR_DATA(0x3006, 0x0050); |
32 | 93 static const OrthancPlugins::DicomTag DICOM_TAG_NUMBER_OF_CONTOUR_POINTS(0x3006, 0x0046); |
94 static const OrthancPlugins::DicomTag DICOM_TAG_REFERENCED_SOP_INSTANCE_UID(0x0008, 0x1155); | |
95 static const OrthancPlugins::DicomTag DICOM_TAG_ROI_CONTOUR_SEQUENCE(0x3006, 0x0039); | |
96 static const OrthancPlugins::DicomTag DICOM_TAG_ROI_DISPLAY_COLOR(0x3006, 0x002a); | |
97 static const OrthancPlugins::DicomTag DICOM_TAG_ROI_NAME(0x3006, 0x0026); | |
98 static const OrthancPlugins::DicomTag DICOM_TAG_RT_ROI_INTERPRETED_TYPE(0x3006, 0x00a4); | |
99 static const OrthancPlugins::DicomTag DICOM_TAG_RT_ROI_OBSERVATIONS_SEQUENCE(0x3006, 0x0080); | |
100 static const OrthancPlugins::DicomTag DICOM_TAG_STRUCTURE_SET_ROI_SEQUENCE(0x3006, 0x0020); | |
0 | 101 |
102 | |
103 static uint8_t ConvertColor(double v) | |
104 { | |
105 if (v < 0) | |
106 { | |
107 return 0; | |
108 } | |
109 else if (v >= 255) | |
110 { | |
111 return 255; | |
112 } | |
113 else | |
114 { | |
115 return static_cast<uint8_t>(v); | |
116 } | |
117 } | |
118 | |
119 | |
118
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120 static bool ParseVector(Vector& target, |
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121 const OrthancPlugins::IDicomDataset& dataset, |
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122 const OrthancPlugins::DicomPath& tag) |
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123 { |
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124 std::string value; |
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125 return (dataset.GetStringValue(value, tag) && |
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126 GeometryToolbox::ParseVector(target, value)); |
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127 } |
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128 |
0 | 129 |
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130 void DicomStructureSet::Polygon::CheckPoint(const Vector& v) |
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131 { |
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132 if (hasSlice_) |
0 | 133 { |
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134 if (!GeometryToolbox::IsNear(GeometryToolbox::ProjectAlongNormal(v, normal_), |
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135 projectionAlongNormal_, |
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136 sliceThickness_ / 2.0 /* in mm */)) |
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137 { |
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138 LOG(ERROR) << "This RT-STRUCT contains a point that is off the slice of its instance"; |
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139 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); |
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140 } |
0 | 141 } |
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142 } |
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144 | |
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145 void DicomStructureSet::Polygon::AddPoint(const Vector& v) |
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146 { |
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147 CheckPoint(v); |
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148 points_.push_back(v); |
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149 } |
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150 |
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151 |
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152 bool DicomStructureSet::Polygon::UpdateReferencedSlice(const ReferencedSlices& slices) |
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153 { |
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154 if (hasSlice_) |
0 | 155 { |
122
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156 return true; |
32 | 157 } |
158 else | |
159 { | |
122
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160 ReferencedSlices::const_iterator it = slices.find(sopInstanceUid_); |
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161 |
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162 if (it == slices.end()) |
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163 { |
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164 return false; |
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165 } |
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166 else |
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167 { |
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168 const CoordinateSystem3D& geometry = it->second.geometry_; |
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169 |
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170 hasSlice_ = true; |
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171 normal_ = geometry.GetNormal(); |
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172 projectionAlongNormal_ = GeometryToolbox::ProjectAlongNormal(geometry.GetOrigin(), normal_); |
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173 sliceThickness_ = it->second.thickness_; |
0 | 174 |
122
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175 for (Points::const_iterator it = points_.begin(); it != points_.end(); ++it) |
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176 { |
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177 CheckPoint(*it); |
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178 } |
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179 |
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180 return true; |
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181 } |
0 | 182 } |
183 } | |
184 | |
185 | |
122
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186 bool DicomStructureSet::Polygon::IsOnSlice(const CoordinateSystem3D& slice) const |
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187 { |
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188 bool isOpposite; |
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189 |
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190 if (points_.empty() || |
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191 !hasSlice_ || |
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192 !GeometryToolbox::IsParallelOrOpposite(isOpposite, slice.GetNormal(), normal_)) |
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193 { |
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194 return false; |
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195 } |
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196 |
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197 double d = GeometryToolbox::ProjectAlongNormal(slice.GetOrigin(), normal_); |
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198 |
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199 return (GeometryToolbox::IsNear(d, projectionAlongNormal_, |
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200 sliceThickness_ / 2.0)); |
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201 } |
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202 |
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203 |
0 | 204 const DicomStructureSet::Structure& DicomStructureSet::GetStructure(size_t index) const |
205 { | |
206 if (index >= structures_.size()) | |
207 { | |
125 | 208 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
209 } | |
210 | |
211 return structures_[index]; | |
212 } | |
213 | |
214 | |
215 DicomStructureSet::Structure& DicomStructureSet::GetStructure(size_t index) | |
216 { | |
217 if (index >= structures_.size()) | |
218 { | |
219 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
0 | 220 } |
221 | |
222 return structures_[index]; | |
223 } | |
224 | |
225 | |
122
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226 DicomStructureSet::DicomStructureSet(const OrthancPlugins::FullOrthancDataset& tags) |
0 | 227 { |
32 | 228 using namespace OrthancPlugins; |
0 | 229 |
32 | 230 DicomDatasetReader reader(tags); |
231 | |
232 size_t count, tmp; | |
233 if (!tags.GetSequenceSize(count, DICOM_TAG_RT_ROI_OBSERVATIONS_SEQUENCE) || | |
234 !tags.GetSequenceSize(tmp, DICOM_TAG_ROI_CONTOUR_SEQUENCE) || | |
235 tmp != count || | |
236 !tags.GetSequenceSize(tmp, DICOM_TAG_STRUCTURE_SET_ROI_SEQUENCE) || | |
237 tmp != count) | |
0 | 238 { |
239 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
240 } | |
241 | |
32 | 242 structures_.resize(count); |
243 for (size_t i = 0; i < count; i++) | |
244 { | |
122
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245 structures_[i].interpretation_ = reader.GetStringValue |
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246 (DicomPath(DICOM_TAG_RT_ROI_OBSERVATIONS_SEQUENCE, i, |
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247 DICOM_TAG_RT_ROI_INTERPRETED_TYPE), |
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248 "No interpretation"); |
0 | 249 |
122
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250 structures_[i].name_ = reader.GetStringValue |
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251 (DicomPath(DICOM_TAG_STRUCTURE_SET_ROI_SEQUENCE, i, |
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252 DICOM_TAG_ROI_NAME), |
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253 "No interpretation"); |
0 | 254 |
255 Vector color; | |
118
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256 if (ParseVector(color, tags, DicomPath(DICOM_TAG_ROI_CONTOUR_SEQUENCE, i, |
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257 DICOM_TAG_ROI_DISPLAY_COLOR)) && |
32 | 258 color.size() == 3) |
0 | 259 { |
32 | 260 structures_[i].red_ = ConvertColor(color[0]); |
261 structures_[i].green_ = ConvertColor(color[1]); | |
262 structures_[i].blue_ = ConvertColor(color[2]); | |
263 } | |
264 else | |
265 { | |
266 structures_[i].red_ = 255; | |
267 structures_[i].green_ = 0; | |
268 structures_[i].blue_ = 0; | |
0 | 269 } |
270 | |
32 | 271 size_t countSlices; |
272 if (!tags.GetSequenceSize(countSlices, DicomPath(DICOM_TAG_ROI_CONTOUR_SEQUENCE, i, | |
273 DICOM_TAG_CONTOUR_SEQUENCE))) | |
274 { | |
121
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275 countSlices = 0; |
32 | 276 } |
0 | 277 |
278 LOG(WARNING) << "New RT structure: \"" << structures_[i].name_ | |
279 << "\" with interpretation \"" << structures_[i].interpretation_ | |
32 | 280 << "\" containing " << countSlices << " slices (color: " |
0 | 281 << static_cast<int>(structures_[i].red_) << "," |
282 << static_cast<int>(structures_[i].green_) << "," | |
283 << static_cast<int>(structures_[i].blue_) << ")"; | |
284 | |
32 | 285 for (size_t j = 0; j < countSlices; j++) |
0 | 286 { |
32 | 287 unsigned int countPoints; |
0 | 288 |
122
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289 if (!reader.GetUnsignedIntegerValue |
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290 (countPoints, DicomPath(DICOM_TAG_ROI_CONTOUR_SEQUENCE, i, |
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291 DICOM_TAG_CONTOUR_SEQUENCE, j, |
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292 DICOM_TAG_NUMBER_OF_CONTOUR_POINTS))) |
32 | 293 { |
294 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
295 } | |
296 | |
121
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297 //LOG(INFO) << "Parsing slice containing " << countPoints << " vertices"; |
0 | 298 |
122
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299 std::string type = reader.GetMandatoryStringValue |
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300 (DicomPath(DICOM_TAG_ROI_CONTOUR_SEQUENCE, i, |
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301 DICOM_TAG_CONTOUR_SEQUENCE, j, |
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302 DICOM_TAG_CONTOUR_GEOMETRIC_TYPE)); |
32 | 303 if (type != "CLOSED_PLANAR") |
0 | 304 { |
32 | 305 LOG(ERROR) << "Cannot handle contour with geometry type: " << type; |
0 | 306 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
307 } | |
308 | |
122
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309 size_t size; |
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310 if (!tags.GetSequenceSize(size, DicomPath(DICOM_TAG_ROI_CONTOUR_SEQUENCE, i, |
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311 DICOM_TAG_CONTOUR_SEQUENCE, j, |
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312 DICOM_TAG_CONTOUR_IMAGE_SEQUENCE)) || |
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313 size != 1) |
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314 { |
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315 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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316 } |
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317 |
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318 std::string sopInstanceUid = reader.GetMandatoryStringValue |
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319 (DicomPath(DICOM_TAG_ROI_CONTOUR_SEQUENCE, i, |
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320 DICOM_TAG_CONTOUR_SEQUENCE, j, |
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321 DICOM_TAG_CONTOUR_IMAGE_SEQUENCE, 0, |
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322 DICOM_TAG_REFERENCED_SOP_INSTANCE_UID)); |
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323 |
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324 std::string slicesData = reader.GetMandatoryStringValue |
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325 (DicomPath(DICOM_TAG_ROI_CONTOUR_SEQUENCE, i, |
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326 DICOM_TAG_CONTOUR_SEQUENCE, j, |
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327 DICOM_TAG_CONTOUR_DATA)); |
0 | 328 |
329 Vector points; | |
330 if (!GeometryToolbox::ParseVector(points, slicesData) || | |
32 | 331 points.size() != 3 * countPoints) |
0 | 332 { |
333 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
334 } | |
335 | |
122
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336 Polygon polygon(sopInstanceUid); |
0 | 337 |
32 | 338 for (size_t k = 0; k < countPoints; k++) |
0 | 339 { |
340 Vector v(3); | |
341 v[0] = points[3 * k]; | |
342 v[1] = points[3 * k + 1]; | |
343 v[2] = points[3 * k + 2]; | |
122
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344 polygon.AddPoint(v); |
0 | 345 } |
346 | |
347 structures_[i].polygons_.push_back(polygon); | |
348 } | |
349 } | |
350 } | |
351 | |
352 | |
353 Vector DicomStructureSet::GetStructureCenter(size_t index) const | |
354 { | |
355 const Structure& structure = GetStructure(index); | |
356 | |
357 Vector center; | |
358 GeometryToolbox::AssignVector(center, 0, 0, 0); | |
359 if (structure.polygons_.empty()) | |
360 { | |
361 return center; | |
362 } | |
363 | |
364 double n = static_cast<double>(structure.polygons_.size()); | |
365 | |
366 for (Polygons::const_iterator polygon = structure.polygons_.begin(); | |
367 polygon != structure.polygons_.end(); ++polygon) | |
368 { | |
122
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369 if (!polygon->GetPoints().empty()) |
0 | 370 { |
122
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371 center += polygon->GetPoints().front() / n; |
0 | 372 } |
373 } | |
374 | |
375 return center; | |
376 } | |
377 | |
378 | |
379 const std::string& DicomStructureSet::GetStructureName(size_t index) const | |
380 { | |
381 return GetStructure(index).name_; | |
382 } | |
383 | |
384 | |
385 const std::string& DicomStructureSet::GetStructureInterpretation(size_t index) const | |
386 { | |
387 return GetStructure(index).interpretation_; | |
388 } | |
389 | |
390 | |
391 void DicomStructureSet::GetStructureColor(uint8_t& red, | |
392 uint8_t& green, | |
393 uint8_t& blue, | |
394 size_t index) const | |
395 { | |
396 const Structure& s = GetStructure(index); | |
397 red = s.red_; | |
398 green = s.green_; | |
399 blue = s.blue_; | |
400 } | |
401 | |
402 | |
122
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403 void DicomStructureSet::GetReferencedInstances(std::set<std::string>& instances) |
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404 { |
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405 for (Structures::const_iterator structure = structures_.begin(); |
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406 structure != structures_.end(); ++structure) |
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407 { |
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408 for (Polygons::const_iterator polygon = structure->polygons_.begin(); |
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409 polygon != structure->polygons_.end(); ++polygon) |
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410 { |
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411 instances.insert(polygon->GetSopInstanceUid()); |
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412 } |
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413 } |
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414 } |
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415 |
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416 |
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417 void DicomStructureSet::AddReferencedSlice(const std::string& sopInstanceUid, |
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418 const std::string& seriesInstanceUid, |
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419 const CoordinateSystem3D& geometry, |
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420 double thickness) |
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421 { |
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422 if (referencedSlices_.find(sopInstanceUid) != referencedSlices_.end()) |
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423 { |
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424 // This geometry is already known |
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425 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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426 } |
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427 else |
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428 { |
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429 if (thickness < 0) |
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430 { |
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431 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
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432 } |
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433 |
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434 if (!referencedSlices_.empty()) |
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435 { |
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436 const ReferencedSlice& reference = referencedSlices_.begin()->second; |
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437 |
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438 if (reference.seriesInstanceUid_ != seriesInstanceUid) |
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439 { |
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440 LOG(ERROR) << "This RT-STRUCT refers to several different series"; |
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441 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); |
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442 } |
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443 |
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444 if (!GeometryToolbox::IsParallel(reference.geometry_.GetNormal(), geometry.GetNormal())) |
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445 { |
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446 LOG(ERROR) << "The slices in this RT-STRUCT are not parallel"; |
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447 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); |
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448 } |
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449 } |
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450 |
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451 referencedSlices_[sopInstanceUid] = ReferencedSlice(seriesInstanceUid, geometry, thickness); |
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452 } |
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453 } |
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454 |
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455 |
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456 void DicomStructureSet::AddReferencedSlice(const Orthanc::DicomMap& dataset) |
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457 { |
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458 CoordinateSystem3D slice(dataset); |
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459 |
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460 double thickness = 1; // 1 mm by default |
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461 |
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462 std::string s; |
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463 Vector v; |
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464 if (dataset.CopyToString(s, Orthanc::DICOM_TAG_SLICE_THICKNESS, false) && |
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465 GeometryToolbox::ParseVector(v, s) && |
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466 v.size() > 0) |
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467 { |
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468 thickness = v[0]; |
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469 } |
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470 |
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471 std::string instance, series; |
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472 if (dataset.CopyToString(instance, Orthanc::DICOM_TAG_SOP_INSTANCE_UID, false) && |
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473 dataset.CopyToString(series, Orthanc::DICOM_TAG_SERIES_INSTANCE_UID, false)) |
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474 { |
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475 AddReferencedSlice(instance, series, slice, thickness); |
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476 } |
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477 else |
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478 { |
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479 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); |
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480 } |
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481 } |
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482 |
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483 |
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484 void DicomStructureSet::CheckReferencedSlices() |
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485 { |
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486 for (Structures::iterator structure = structures_.begin(); |
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487 structure != structures_.end(); ++structure) |
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488 { |
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489 for (Polygons::iterator polygon = structure->polygons_.begin(); |
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490 polygon != structure->polygons_.end(); ++polygon) |
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491 { |
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492 if (!polygon->UpdateReferencedSlice(referencedSlices_)) |
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493 { |
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494 LOG(ERROR) << "Missing information about referenced instance: " |
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495 << polygon->GetSopInstanceUid(); |
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496 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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497 } |
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498 } |
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499 } |
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500 } |
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501 |
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502 |
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503 Vector DicomStructureSet::GetNormal() const |
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504 { |
126
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505 if (referencedSlices_.empty()) |
122
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506 { |
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507 Vector v; |
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508 GeometryToolbox::AssignVector(v, 0, 0, 1); |
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509 return v; |
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510 } |
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511 else |
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512 { |
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513 return referencedSlices_.begin()->second.geometry_.GetNormal(); |
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514 } |
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515 } |
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516 |
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517 |
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518 DicomStructureSet* DicomStructureSet::SynchronousLoad(OrthancPlugins::IOrthancConnection& orthanc, |
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519 const std::string& instanceId) |
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520 { |
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521 const std::string uri = "/instances/" + instanceId + "/tags?ignore-length=3006-0050"; |
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522 OrthancPlugins::FullOrthancDataset dataset(orthanc, uri); |
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523 |
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524 std::auto_ptr<DicomStructureSet> result(new DicomStructureSet(dataset)); |
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525 |
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526 std::set<std::string> instances; |
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527 result->GetReferencedInstances(instances); |
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528 |
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529 for (std::set<std::string>::const_iterator it = instances.begin(); |
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530 it != instances.end(); ++it) |
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531 { |
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532 Json::Value lookup; |
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533 MessagingToolbox::RestApiPost(lookup, orthanc, "/tools/lookup", *it); |
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534 |
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535 if (lookup.type() != Json::arrayValue || |
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536 lookup.size() != 1 || |
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537 !lookup[0].isMember("Type") || |
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538 !lookup[0].isMember("Path") || |
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539 lookup[0]["Type"].type() != Json::stringValue || |
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540 lookup[0]["ID"].type() != Json::stringValue || |
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541 lookup[0]["Type"].asString() != "Instance") |
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542 { |
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543 throw Orthanc::OrthancException(Orthanc::ErrorCode_UnknownResource); |
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544 } |
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545 |
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546 OrthancPlugins::FullOrthancDataset slice |
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547 (orthanc, "/instances/" + lookup[0]["ID"].asString() + "/tags"); |
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548 Orthanc::DicomMap m; |
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549 MessagingToolbox::ConvertDataset(m, slice); |
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550 result->AddReferencedSlice(m); |
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551 } |
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552 |
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553 result->CheckReferencedSlices(); |
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554 |
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555 return result.release(); |
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556 } |
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557 |
125 | 558 |
559 bool DicomStructureSet::ProjectStructure(std::vector< std::vector<PolygonPoint> >& polygons, | |
560 Structure& structure, | |
561 const CoordinateSystem3D& slice) | |
562 { | |
563 polygons.clear(); | |
564 | |
565 Vector normal = GetNormal(); | |
566 | |
567 bool isOpposite; | |
568 if (GeometryToolbox::IsParallelOrOpposite(isOpposite, normal, slice.GetNormal())) | |
569 { | |
570 // This is an axial projection | |
571 | |
572 for (Polygons::iterator polygon = structure.polygons_.begin(); | |
573 polygon != structure.polygons_.end(); ++polygon) | |
574 { | |
575 polygon->UpdateReferencedSlice(referencedSlices_); | |
576 | |
577 if (polygon->IsOnSlice(slice)) | |
578 { | |
579 polygons.push_back(std::vector<PolygonPoint>()); | |
580 | |
581 for (Points::const_iterator p = polygon->GetPoints().begin(); | |
582 p != polygon->GetPoints().end(); ++p) | |
583 { | |
584 double x, y; | |
585 slice.ProjectPoint(x, y, *p); | |
586 polygons.back().push_back(std::make_pair(x, y)); | |
587 } | |
588 } | |
589 } | |
590 | |
591 return true; | |
592 } | |
593 else if (GeometryToolbox::IsParallelOrOpposite(isOpposite, normal, slice.GetAxisX()) || | |
594 GeometryToolbox::IsParallelOrOpposite(isOpposite, normal, slice.GetAxisY())) | |
595 { | |
126
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596 // Sagittal or coronal projection |
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597 |
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598 std::vector<BoostPolygon> projected; |
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599 |
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600 for (Polygons::iterator polygon = structure.polygons_.begin(); |
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601 polygon != structure.polygons_.end(); ++polygon) |
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602 { |
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603 polygon->UpdateReferencedSlice(referencedSlices_); |
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604 |
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605 // First, check that the polygon intersects the input slice |
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606 double zmin = std::numeric_limits<double>::infinity(); |
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607 double zmax = -std::numeric_limits<double>::infinity(); |
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608 |
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609 double zref = slice.ProjectAlongNormal(slice.GetOrigin()); |
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610 |
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611 for (Points::const_iterator p = polygon->GetPoints().begin(); |
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612 p != polygon->GetPoints().end(); ++p) |
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613 { |
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614 double z = slice.ProjectAlongNormal(*p); |
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615 zmin = std::min(zmin, z); |
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616 zmax = std::max(zmax, z); |
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617 } |
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618 |
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619 if (zmin < zref && zref < zmax) |
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620 { |
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621 // The polygon intersect the input slice, project the polygon |
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622 double xmin = std::numeric_limits<double>::infinity(); |
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623 double xmax = -std::numeric_limits<double>::infinity(); |
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624 double ymin = std::numeric_limits<double>::infinity(); |
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625 double ymax = -std::numeric_limits<double>::infinity(); |
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626 |
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627 for (Points::const_iterator p = polygon->GetPoints().begin(); |
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628 p != polygon->GetPoints().end(); ++p) |
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629 { |
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630 double x, y; |
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631 slice.ProjectPoint(x, y, *p); |
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632 xmin = std::min(xmin, x); |
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633 xmax = std::max(xmax, x); |
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634 ymin = std::min(ymin, y); |
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635 ymax = std::max(ymax, y); |
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636 } |
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637 |
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638 if (GeometryToolbox::IsNear(xmin, xmax)) |
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639 { |
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640 projected.push_back(CreateRectangle(xmin - polygon->GetSliceThickness() / 2.0, ymin, |
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641 xmax + polygon->GetSliceThickness() / 2.0, ymax)); |
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642 } |
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643 else if (GeometryToolbox::IsNear(ymin, ymax)) |
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644 { |
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645 projected.push_back(CreateRectangle(xmin, ymin - polygon->GetSliceThickness() / 2.0, |
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646 xmax, ymax + polygon->GetSliceThickness() / 2.0)); |
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647 } |
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648 else |
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649 { |
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650 // Should not happen |
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651 } |
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652 } |
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653 } |
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654 |
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655 BoostMultiPolygon merged; |
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656 Union(merged, projected); |
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657 |
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658 polygons.resize(merged.size()); |
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659 for (size_t i = 0; i < merged.size(); i++) |
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660 { |
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661 const std::vector<BoostPoint>& outer = merged[i].outer(); |
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662 |
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663 polygons[i].resize(outer.size()); |
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664 for (size_t j = 0; j < outer.size(); j++) |
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665 { |
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666 polygons[i][j] = std::make_pair(outer[j].x(), outer[j].y()); |
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667 } |
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668 } |
125 | 669 |
126
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670 return true; |
125 | 671 } |
672 else | |
673 { | |
674 return false; | |
675 } | |
676 } | |
0 | 677 } |