Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/SliceGeometry.cpp @ 40:7207a407bcd8
shared copyright with osimis
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 04 Jan 2017 16:37:42 +0100 |
parents | 517c46f527cd |
children | 28956ed68280 |
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
shared copyright with osimis
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
32
diff
changeset
|
5 * Copyright (C) 2017 Osimis, Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU General Public License as | |
9 * published by the Free Software Foundation, either version 3 of the | |
10 * License, or (at your option) any later version. | |
11 * | |
12 * In addition, as a special exception, the copyright holders of this | |
13 * program give permission to link the code of its release with the | |
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
15 * that use the same license as the "OpenSSL" library), and distribute | |
16 * the linked executables. You must obey the GNU General Public License | |
17 * in all respects for all of the code used other than "OpenSSL". If you | |
18 * modify file(s) with this exception, you may extend this exception to | |
19 * your version of the file(s), but you are not obligated to do so. If | |
20 * you do not wish to do so, delete this exception statement from your | |
21 * version. If you delete this exception statement from all source files | |
22 * in the program, then also delete it here. | |
23 * | |
24 * This program is distributed in the hope that it will be useful, but | |
25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
27 * General Public License for more details. | |
28 * | |
29 * You should have received a copy of the GNU General Public License | |
30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
31 **/ | |
32 | |
33 | |
34 #include "SliceGeometry.h" | |
35 | |
36 #include "GeometryToolbox.h" | |
37 | |
16 | 38 #include "../../Resources/Orthanc/Core/Logging.h" |
39 #include "../../Resources/Orthanc/Core/Toolbox.h" | |
40 #include "../../Resources/Orthanc/Core/OrthancException.h" | |
0 | 41 |
42 namespace OrthancStone | |
43 { | |
44 void SliceGeometry::CheckAndComputeNormal() | |
45 { | |
46 // DICOM expects normal vectors to define the axes: "The row and | |
47 // column direction cosine vectors shall be normal, i.e., the dot | |
48 // product of each direction cosine vector with itself shall be | |
49 // unity." | |
50 // http://dicom.nema.org/medical/dicom/current/output/chtml/part03/sect_C.7.6.2.html | |
51 if (!GeometryToolbox::IsNear(boost::numeric::ublas::norm_2(axisX_), 1.0) || | |
52 !GeometryToolbox::IsNear(boost::numeric::ublas::norm_2(axisY_), 1.0)) | |
53 { | |
54 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
55 } | |
56 | |
57 // The vectors within "Image Orientation Patient" must be | |
58 // orthogonal, according to the DICOM specification: "The row and | |
59 // column direction cosine vectors shall be orthogonal, i.e., | |
60 // their dot product shall be zero." | |
61 // http://dicom.nema.org/medical/dicom/current/output/chtml/part03/sect_C.7.6.2.html | |
62 if (!GeometryToolbox::IsCloseToZero(boost::numeric::ublas::inner_prod(axisX_, axisY_))) | |
63 { | |
64 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
65 } | |
66 | |
67 GeometryToolbox::CrossProduct(normal_, axisX_, axisY_); | |
68 | |
69 // Just a sanity check, it should be useless by construction | |
70 assert(GeometryToolbox::IsNear(boost::numeric::ublas::norm_2(normal_), 1.0)); | |
71 } | |
72 | |
73 | |
74 void SliceGeometry::SetupCanonical() | |
75 { | |
76 GeometryToolbox::AssignVector(origin_, 0, 0, 0); | |
77 GeometryToolbox::AssignVector(axisX_, 1, 0, 0); | |
78 GeometryToolbox::AssignVector(axisY_, 0, 1, 0); | |
79 CheckAndComputeNormal(); | |
80 } | |
81 | |
82 | |
83 SliceGeometry::SliceGeometry(const Vector& origin, | |
84 const Vector& axisX, | |
85 const Vector& axisY) : | |
86 origin_(origin), | |
87 axisX_(axisX), | |
88 axisY_(axisY) | |
89 { | |
90 CheckAndComputeNormal(); | |
91 } | |
92 | |
93 | |
94 void SliceGeometry::Setup(const std::string& imagePositionPatient, | |
95 const std::string& imageOrientationPatient) | |
96 { | |
97 std::string tmpPosition = Orthanc::Toolbox::StripSpaces(imagePositionPatient); | |
98 std::string tmpOrientation = Orthanc::Toolbox::StripSpaces(imageOrientationPatient); | |
99 | |
100 Vector orientation; | |
101 if (!GeometryToolbox::ParseVector(origin_, tmpPosition) || | |
102 !GeometryToolbox::ParseVector(orientation, tmpOrientation) || | |
103 origin_.size() != 3 || | |
104 orientation.size() != 6) | |
105 { | |
106 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadFileFormat); | |
107 } | |
108 | |
109 axisX_.resize(3); | |
110 axisX_[0] = orientation[0]; | |
111 axisX_[1] = orientation[1]; | |
112 axisX_[2] = orientation[2]; | |
113 | |
114 axisY_.resize(3); | |
115 axisY_[0] = orientation[3]; | |
116 axisY_[1] = orientation[4]; | |
117 axisY_[2] = orientation[5]; | |
118 | |
119 CheckAndComputeNormal(); | |
120 } | |
121 | |
122 | |
32 | 123 SliceGeometry::SliceGeometry(const OrthancPlugins::IDicomDataset& dicom) |
0 | 124 { |
32 | 125 std::string a, b; |
126 | |
127 if (dicom.GetStringValue(a, OrthancPlugins::DICOM_TAG_IMAGE_POSITION_PATIENT) && | |
128 dicom.GetStringValue(b, OrthancPlugins::DICOM_TAG_IMAGE_ORIENTATION_PATIENT)) | |
0 | 129 { |
32 | 130 Setup(a, b); |
0 | 131 } |
132 else | |
133 { | |
134 SetupCanonical(); | |
135 } | |
136 } | |
137 | |
138 | |
139 Vector SliceGeometry::MapSliceToWorldCoordinates(double x, | |
140 double y) const | |
141 { | |
142 return origin_ + x * axisX_ + y * axisY_; | |
143 } | |
144 | |
145 | |
146 double SliceGeometry::ProjectAlongNormal(const Vector& point) const | |
147 { | |
148 return boost::numeric::ublas::inner_prod(point, normal_); | |
149 } | |
150 | |
151 | |
152 void SliceGeometry::ProjectPoint(double& offsetX, | |
153 double& offsetY, | |
154 const Vector& point) const | |
155 { | |
156 // Project the point onto the slice | |
157 Vector projection; | |
158 GeometryToolbox::ProjectPointOntoPlane(projection, point, normal_, origin_); | |
159 | |
160 // As the axes are orthonormal vectors thanks to | |
161 // CheckAndComputeNormal(), the following dot products give the | |
162 // offset of the origin of the slice wrt. the origin of the | |
163 // reference plane https://en.wikipedia.org/wiki/Vector_projection | |
164 offsetX = boost::numeric::ublas::inner_prod(axisX_, projection - origin_); | |
165 offsetY = boost::numeric::ublas::inner_prod(axisY_, projection - origin_); | |
166 } | |
167 } |