Mercurial > hg > orthanc-stone

annotate Framework/Scene2D/LookupTableTextureSceneLayer.cpp @ 1165:4d97f532f1e0 broker

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 19 Nov 2019 21:40:25 +0100
parents 640feb146fa8
children 177e7d431cd1 2d8ab34c8c91
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "LookupTableTextureSceneLayer.h"
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23
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24 #include <Core/Images/Image.h>
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25 #include <Core/Images/ImageProcessing.h>
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26 #include <Core/OrthancException.h>
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27
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28 namespace OrthancStone
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29 {
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30 LookupTableTextureSceneLayer::LookupTableTextureSceneLayer(const Orthanc::ImageAccessor& texture)
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31 {
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32 {
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33 std::auto_ptr<Orthanc::ImageAccessor> t(
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34 new Orthanc::Image(Orthanc::PixelFormat_Float32,
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35 texture.GetWidth(),
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36 texture.GetHeight(),
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37 false));
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38
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39 Orthanc::ImageProcessing::Convert(*t, texture);
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40 SetTexture(t.release());
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41 }
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42
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43 SetLookupTableGrayscale(); // simple ramp between 0 and 255
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44 SetRange(0, 1);
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45 }
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46
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47
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48 void LookupTableTextureSceneLayer::SetLookupTableGrayscale()
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49 {
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50 std::vector<uint8_t> rgb(3 * 256);
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51
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52 for (size_t i = 0; i < 256; i++)
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53 {
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54 rgb[3 * i] = static_cast<uint8_t>(i);
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55 rgb[3 * i + 1] = static_cast<uint8_t>(i);
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56 rgb[3 * i + 2] = static_cast<uint8_t>(i);
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57 }
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58
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59 SetLookupTableRgb(rgb);
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60 }
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61
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62
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63 void LookupTableTextureSceneLayer::SetLookupTableRgb(const std::vector<uint8_t>& lut)
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64 {
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65 if (lut.size() != 3 * 256)
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66 {
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67 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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68 }
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69
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70 lut_.resize(4 * 256);
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71
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72 for (size_t i = 0; i < 256; i++)
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73 {
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74 // Premultiplied alpha
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75
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76 if (i == 0)
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77 {
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78 // Make zero transparent
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79 lut_[4 * i] = 0; // R
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80 lut_[4 * i + 1] = 0; // G
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81 lut_[4 * i + 2] = 0; // B
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82 lut_[4 * i + 3] = 0; // A
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83 }
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84 else
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85 {
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86 float a = static_cast<float>(i) / 255.0f;
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87
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88 float r = static_cast<float>(lut[3 * i]) * a;
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89 float g = static_cast<float>(lut[3 * i + 1]) * a;
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90 float b = static_cast<float>(lut[3 * i + 2]) * a;
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91
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92 lut_[4 * i] = static_cast<uint8_t>(std::floor(r));
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93 lut_[4 * i + 1] = static_cast<uint8_t>(std::floor(g));
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94 lut_[4 * i + 2] = static_cast<uint8_t>(std::floor(b));
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95 lut_[4 * i + 3] = static_cast<uint8_t>(std::floor(a * 255.0f));
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96 }
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97 }
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98
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99 IncrementRevision();
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100 }
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101
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102
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103 void LookupTableTextureSceneLayer::SetLookupTable(const std::vector<uint8_t>& lut)
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104 {
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105 if (lut.size() == 4 * 256)
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106 {
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107 lut_ = lut;
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108 IncrementRevision();
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109 }
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110 else if (lut.size() == 3 * 256)
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111 {
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112 SetLookupTableRgb(lut);
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113 }
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114 else
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115 {
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116 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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117 }
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118 }
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119
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120 void LookupTableTextureSceneLayer::SetRange(float minValue,
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121 float maxValue)
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122 {
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123 if (minValue > maxValue)
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124 {
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125 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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126 }
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127 else
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128 {
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129 minValue_ = minValue;
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130 maxValue_ = maxValue;
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131 IncrementRevision();
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132 }
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133 }
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134
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135 void LookupTableTextureSceneLayer::FitRange()
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136 {
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137 Orthanc::ImageProcessing::GetMinMaxFloatValue(minValue_, maxValue_, GetTexture());
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138 assert(minValue_ <= maxValue_);
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139 // TODO: debug to be removed
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140 if (fabs(maxValue_ - minValue_) < 0.0001) {
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141 LOG(INFO) << "LookupTableTextureSceneLayer::FitRange(): minValue_ = " << minValue_ << " maxValue_ = " << maxValue_;
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142 }
768
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143 IncrementRevision();
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144 }
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145
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146
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147 ISceneLayer* LookupTableTextureSceneLayer::Clone() const
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148 {
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149 std::auto_ptr<LookupTableTextureSceneLayer> cloned
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150 (new LookupTableTextureSceneLayer(GetTexture()));
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151
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152
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153 // TODO: why is windowing_ not copied??????
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154 cloned->CopyParameters(*this);
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155 cloned->minValue_ = minValue_;
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156 cloned->maxValue_ = maxValue_;
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157 cloned->lut_ = lut_;
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158
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159 return cloned.release();
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160 }
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161 }