Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/LookupTableTextureSceneLayer.cpp @ 1615:f5d4bd7b5593
new class: OsiriXLayerFactory
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 30 Oct 2020 17:26:44 +0100 |
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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) 2017-2020 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 Lesser 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 * Lesser 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 Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 |
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23 #include "LookupTableTextureSceneLayer.h" |
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24 |
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25 #include <Images/Image.h> |
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26 #include <Images/ImageProcessing.h> |
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27 #include <OrthancException.h> |
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28 |
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29 namespace OrthancStone |
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30 { |
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31 LookupTableTextureSceneLayer::LookupTableTextureSceneLayer(const Orthanc::ImageAccessor& texture) : |
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32 applyLog_(false) |
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33 { |
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34 { |
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35 std::unique_ptr<Orthanc::ImageAccessor> t( |
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36 new Orthanc::Image(Orthanc::PixelFormat_Float32, |
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37 texture.GetWidth(), |
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38 texture.GetHeight(), |
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39 false)); |
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40 |
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41 Orthanc::ImageProcessing::Convert(*t, texture); |
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42 SetTexture(t.release()); |
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43 } |
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44 |
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45 SetLookupTableGrayscale(); // simple ramp between 0 and 255 |
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46 SetRange(0, 1); |
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47 } |
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48 |
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49 |
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50 void LookupTableTextureSceneLayer::SetLookupTableGrayscale() |
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51 { |
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52 std::vector<uint8_t> rgb(3 * 256); |
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53 |
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54 for (size_t i = 0; i < 256; i++) |
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798 | 56 rgb[3 * i] = static_cast<uint8_t>(i); |
57 rgb[3 * i + 1] = static_cast<uint8_t>(i); | |
58 rgb[3 * i + 2] = static_cast<uint8_t>(i); | |
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59 } |
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60 |
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61 SetLookupTableRgb(rgb); |
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62 } |
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64 |
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65 void LookupTableTextureSceneLayer::SetLookupTableRgb(const std::vector<uint8_t>& lut) |
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67 if (lut.size() != 3 * 256) |
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69 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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70 } |
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71 |
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72 lut_.resize(4 * 256); |
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73 |
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74 for (size_t i = 0; i < 256; i++) |
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75 { |
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76 // Premultiplied alpha |
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77 |
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78 if (i == 0) |
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79 { |
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80 // Make zero transparent |
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81 lut_[4 * i] = 0; // R |
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82 lut_[4 * i + 1] = 0; // G |
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83 lut_[4 * i + 2] = 0; // B |
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84 lut_[4 * i + 3] = 0; // A |
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85 } |
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86 else |
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88 float a = static_cast<float>(i) / 255.0f; |
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89 |
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90 float r = static_cast<float>(lut[3 * i]) * a; |
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91 float g = static_cast<float>(lut[3 * i + 1]) * a; |
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92 float b = static_cast<float>(lut[3 * i + 2]) * a; |
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93 |
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94 lut_[4 * i] = static_cast<uint8_t>(std::floor(r)); |
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95 lut_[4 * i + 1] = static_cast<uint8_t>(std::floor(g)); |
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96 lut_[4 * i + 2] = static_cast<uint8_t>(std::floor(b)); |
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97 lut_[4 * i + 3] = static_cast<uint8_t>(std::floor(a * 255.0f)); |
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98 } |
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99 } |
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100 |
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101 IncrementRevision(); |
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102 } |
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103 |
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104 |
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105 void LookupTableTextureSceneLayer::SetLookupTable(const std::vector<uint8_t>& lut) |
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107 if (lut.size() == 4 * 256) |
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109 lut_ = lut; |
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110 IncrementRevision(); |
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111 } |
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112 else if (lut.size() == 3 * 256) |
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113 { |
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114 SetLookupTableRgb(lut); |
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115 } |
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116 else |
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117 { |
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118 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
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119 } |
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120 } |
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121 |
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122 void LookupTableTextureSceneLayer::SetRange(float minValue, |
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123 float maxValue) |
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124 { |
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125 if (minValue > maxValue) |
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126 { |
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127 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); |
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128 } |
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129 else |
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130 { |
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131 minValue_ = minValue; |
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132 maxValue_ = maxValue; |
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133 IncrementRevision(); |
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134 } |
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135 } |
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136 |
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137 void LookupTableTextureSceneLayer::SetApplyLog(bool apply) |
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138 { |
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139 applyLog_ = apply; |
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140 IncrementRevision(); |
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141 } |
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142 |
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143 void LookupTableTextureSceneLayer::FitRange() |
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144 { |
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145 Orthanc::ImageProcessing::GetMinMaxFloatValue(minValue_, maxValue_, GetTexture()); |
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146 assert(minValue_ <= maxValue_); |
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147 // TODO: debug to be removed |
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148 if (fabs(maxValue_ - minValue_) < 0.0001) { |
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149 LOG(INFO) << "LookupTableTextureSceneLayer::FitRange(): minValue_ = " << minValue_ << " maxValue_ = " << maxValue_; |
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150 } |
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151 IncrementRevision(); |
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152 } |
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153 |
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154 |
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155 ISceneLayer* LookupTableTextureSceneLayer::Clone() const |
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156 { |
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157 std::unique_ptr<LookupTableTextureSceneLayer> cloned |
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158 (new LookupTableTextureSceneLayer(GetTexture())); |
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159 |
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160 |
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161 // TODO: why is windowing_ not copied?????? |
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162 cloned->CopyParameters(*this); |
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163 cloned->minValue_ = minValue_; |
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164 cloned->maxValue_ = maxValue_; |
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165 cloned->lut_ = lut_; |
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166 |
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167 return cloned.release(); |
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168 } |
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169 |
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170 |
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171 // Templatized function to speed up computations, by avoiding |
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172 // testing conditions on each pixel |
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173 template <bool IsApplyLog, |
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174 Orthanc::PixelFormat TargetFormat> |
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175 static void RenderInternal(Orthanc::ImageAccessor& target, |
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176 const Orthanc::ImageAccessor& source, |
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177 float minValue, |
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178 float slope, |
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179 const std::vector<uint8_t>& lut) |
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180 { |
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181 static const float LOG_NORMALIZATION = 255.0f / log(1.0f + 255.0f); |
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182 |
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183 const unsigned int width = source.GetWidth(); |
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184 const unsigned int height = source.GetHeight(); |
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185 |
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186 for (unsigned int y = 0; y < height; y++) |
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187 { |
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188 const float* p = reinterpret_cast<const float*>(source.GetConstRow(y)); |
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189 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); |
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190 |
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191 for (unsigned int x = 0; x < width; x++) |
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192 { |
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193 float v = (*p - minValue) * slope; |
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194 if (v <= 0) |
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195 { |
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196 v = 0; |
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197 } |
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198 else if (v >= 255) |
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199 { |
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200 v = 255; |
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201 } |
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202 |
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203 if (IsApplyLog) |
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204 { |
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205 // https://theailearner.com/2019/01/01/log-transformation/ |
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206 v = LOG_NORMALIZATION * log(1.0f + static_cast<float>(v)); |
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207 } |
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208 |
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209 assert(v >= 0.0f && v <= 255.0f); |
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210 |
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211 uint8_t vv = static_cast<uint8_t>(v); |
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212 |
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213 switch (TargetFormat) |
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214 { |
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215 case Orthanc::PixelFormat_BGRA32: |
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216 // For Cairo surfaces |
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217 q[0] = lut[4 * vv + 2]; // B |
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218 q[1] = lut[4 * vv + 1]; // G |
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219 q[2] = lut[4 * vv + 0]; // R |
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220 q[3] = lut[4 * vv + 3]; // A |
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221 break; |
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222 |
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223 case Orthanc::PixelFormat_RGBA32: |
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224 // For OpenGL |
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225 q[0] = lut[4 * vv + 0]; // R |
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226 q[1] = lut[4 * vv + 1]; // G |
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227 q[2] = lut[4 * vv + 2]; // B |
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228 q[3] = lut[4 * vv + 3]; // A |
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229 break; |
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230 |
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231 default: |
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232 assert(0); |
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233 } |
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234 |
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235 p++; |
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236 q += 4; |
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237 } |
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238 } |
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239 } |
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240 |
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241 |
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242 void LookupTableTextureSceneLayer::Render(Orthanc::ImageAccessor& target) const |
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243 { |
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244 assert(sizeof(float) == 4); |
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245 |
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246 if (!HasTexture()) |
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247 { |
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248 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); |
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249 } |
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250 |
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251 const Orthanc::ImageAccessor& source = GetTexture(); |
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252 |
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253 if (source.GetFormat() != Orthanc::PixelFormat_Float32 || |
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254 (target.GetFormat() != Orthanc::PixelFormat_RGBA32 && |
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255 target.GetFormat() != Orthanc::PixelFormat_BGRA32)) |
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256 { |
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257 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); |
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258 } |
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259 |
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260 if (source.GetWidth() != target.GetWidth() || |
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261 source.GetHeight() != target.GetHeight()) |
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262 { |
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263 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize); |
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264 } |
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265 |
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266 const float minValue = GetMinValue(); |
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267 float slope; |
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268 |
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269 if (GetMinValue() >= GetMaxValue()) |
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270 { |
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271 slope = 0; |
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272 } |
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273 else |
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274 { |
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275 slope = 256.0f / (GetMaxValue() - GetMinValue()); |
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276 } |
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277 |
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278 const std::vector<uint8_t>& lut = GetLookupTable(); |
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279 if (lut.size() != 4 * 256) |
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280 { |
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281 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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282 } |
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283 |
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284 switch (target.GetFormat()) |
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285 { |
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286 case Orthanc::PixelFormat_RGBA32: |
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287 if (applyLog_) |
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288 { |
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289 RenderInternal<true, Orthanc::PixelFormat_RGBA32>(target, source, minValue, slope, lut); |
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290 } |
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291 else |
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292 { |
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293 RenderInternal<false, Orthanc::PixelFormat_RGBA32>(target, source, minValue, slope, lut); |
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294 } |
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295 break; |
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296 |
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297 case Orthanc::PixelFormat_BGRA32: |
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298 if (applyLog_) |
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299 { |
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300 RenderInternal<true, Orthanc::PixelFormat_BGRA32>(target, source, minValue, slope, lut); |
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301 } |
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302 else |
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303 { |
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304 RenderInternal<false, Orthanc::PixelFormat_BGRA32>(target, source, minValue, slope, lut); |
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305 } |
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306 break; |
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307 |
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308 default: |
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309 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); |
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310 } |
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311 } |
768
55411e7da2f7
LookupTableTextureSceneLayer
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312 } |