182
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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) 2017-2018 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 "ImageGeometry.h"
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23
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24 #include "Extent2D.h"
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25 #include "SubpixelReader.h"
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26
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27 #include <Core/Images/ImageProcessing.h>
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28 #include <Core/Logging.h>
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29
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30
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31 namespace OrthancStone
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32 {
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33 static void AddTransformedPoint(Extent2D& extent,
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34 const Matrix& a,
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35 double x,
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36 double y)
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37 {
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38 assert(a.size1() == 3 &&
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39 a.size2() == 3);
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40
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41 Vector p = LinearAlgebra::Product(a, LinearAlgebra::CreateVector(x, y, 1));
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42
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43 if (!LinearAlgebra::IsCloseToZero(p[2]))
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44 {
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45 extent.AddPoint(p[0] / p[2], p[1] / p[2]);
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46 }
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47 }
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48
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49
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190
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50 bool GetProjectiveTransformExtent(unsigned int& x1,
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182
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51 unsigned int& y1,
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52 unsigned int& x2,
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53 unsigned int& y2,
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54 const Matrix& a,
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55 unsigned int sourceWidth,
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56 unsigned int sourceHeight,
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57 unsigned int targetWidth,
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58 unsigned int targetHeight)
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59 {
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60 if (targetWidth == 0 ||
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61 targetHeight == 0)
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62 {
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63 return false;
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64 }
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65
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66 Extent2D extent;
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67 AddTransformedPoint(extent, a, 0, 0);
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68 AddTransformedPoint(extent, a, sourceWidth, 0);
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69 AddTransformedPoint(extent, a, 0, sourceHeight);
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70 AddTransformedPoint(extent, a, sourceWidth, sourceHeight);
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71
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72 if (extent.IsEmpty())
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73 {
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74 return false;
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75 }
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76 else
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77 {
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78 int tmp;
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79
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80 tmp = std::floor(extent.GetX1());
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81 if (tmp < 0)
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82 {
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83 x1 = 0;
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84 }
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85 else
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86 {
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87 x1 = static_cast<unsigned int>(tmp);
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88 }
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89
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90 tmp = std::floor(extent.GetY1());
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91 if (tmp < 0)
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92 {
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93 y1 = 0;
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94 }
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95 else
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96 {
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97 y1 = static_cast<unsigned int>(tmp);
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98 }
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99
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100 tmp = std::ceil(extent.GetX2());
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101 if (tmp < 0)
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102 {
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103 return false;
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104 }
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105 else if (static_cast<unsigned int>(tmp) >= targetWidth)
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106 {
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107 x2 = targetWidth - 1;
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108 }
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109 else
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110 {
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111 x2 = static_cast<unsigned int>(tmp);
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112 }
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113
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114 tmp = std::ceil(extent.GetY2());
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115 if (tmp < 0)
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116 {
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117 return false;
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118 }
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119 else if (static_cast<unsigned int>(tmp) >= targetHeight)
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120 {
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121 y2 = targetHeight - 1;
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122 }
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123 else
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124 {
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125 y2 = static_cast<unsigned int>(tmp);
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126 }
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127
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128 return (x1 <= x2 &&
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129 y1 <= y2);
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130 }
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131 }
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132
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133
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134 template <typename Reader,
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135 bool HasOffsetX,
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136 bool HasOffsetY>
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137 static void ApplyAffineTransformToRow(typename Reader::PixelType* p,
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138 Reader& reader,
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139 unsigned int x1,
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140 unsigned int x2,
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141 float positionX,
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142 float positionY,
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143 float offsetX,
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144 float offsetY)
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145 {
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146 typename Reader::PixelType value;
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147
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148 for (unsigned int x = x1; x <= x2; x++, p++)
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149 {
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150 if (reader.GetValue(value, positionX, positionY))
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151 {
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152 *p = value;
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153 }
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154 else
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155 {
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156 Reader::Traits::SetZero(*p);
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157 }
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158
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159 if (HasOffsetX)
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160 {
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161 positionX += offsetX;
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162 }
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163
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164 if (HasOffsetY)
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165 {
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166 positionY += offsetY;
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167 }
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168 }
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169 }
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170
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171
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172 template <Orthanc::PixelFormat Format,
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173 ImageInterpolation Interpolation>
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174 static void ApplyAffineInternal(Orthanc::ImageAccessor& target,
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175 const Orthanc::ImageAccessor& source,
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176 const Matrix& a)
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177 {
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178 assert(target.GetFormat() == Format &&
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179 source.GetFormat() == Format);
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180
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181 typedef SubpixelReader<Format, Interpolation> Reader;
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182 typedef typename Reader::PixelType PixelType;
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183
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184 if (Format == Orthanc::PixelFormat_RGB24)
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185 {
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186 Orthanc::ImageProcessing::Set(target, 0, 0, 0, 255);
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187 }
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188 else
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189 {
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190 Orthanc::ImageProcessing::Set(target, 0);
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191 }
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192
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193 Matrix inva;
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194 if (!LinearAlgebra::InvertMatrixUnsafe(inva, a))
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195 {
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196 // Singular matrix
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197 return;
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198 }
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199
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200 Reader reader(source);
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201
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202 unsigned int x1, y1, x2, y2;
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203
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190
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204 if (GetProjectiveTransformExtent(x1, y1, x2, y2, a,
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182
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205 source.GetWidth(), source.GetHeight(),
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206 target.GetWidth(), target.GetHeight()))
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207 {
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208 const size_t targetPitch = target.GetPitch();
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209 uint8_t *targetRow = reinterpret_cast<uint8_t*>(reinterpret_cast<PixelType*>(target.GetRow(y1)) + x1);
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210
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211 for (unsigned int y = y1; y <= y2; y++)
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212 {
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213 Vector start;
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214 LinearAlgebra::AssignVector(start, static_cast<double>(x1) + 0.5,
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215 static_cast<double>(y) + 0.5, 1);
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216 start = boost::numeric::ublas::prod(inva, start);
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217 assert(LinearAlgebra::IsNear(1.0, start(2)));
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218
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219 Vector offset;
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220 LinearAlgebra::AssignVector(offset, static_cast<double>(x1) + 1.5,
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221 static_cast<double>(y) + 0.5, 1);
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222 offset = boost::numeric::ublas::prod(inva, offset) - start;
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223 assert(LinearAlgebra::IsNear(0.0, offset(2)));
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224
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225 float startX = static_cast<float>(start[0]);
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226 float startY = static_cast<float>(start[1]);
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227 float offsetX = static_cast<float>(offset[0]);
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228 float offsetY = static_cast<float>(offset[1]);
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229
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230 PixelType* pixel = reinterpret_cast<PixelType*>(targetRow);
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231 if (LinearAlgebra::IsCloseToZero(offsetX))
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232 {
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233 ApplyAffineTransformToRow<Reader, false, true>
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234 (pixel, reader, x1, x2, startX, startY, offsetX, offsetY);
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235 }
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236 else if (LinearAlgebra::IsCloseToZero(offsetY))
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237 {
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238 ApplyAffineTransformToRow<Reader, true, false>
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239 (pixel, reader, x1, x2, startX, startY, offsetX, offsetY);
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240 }
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241 else
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242 {
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243 ApplyAffineTransformToRow<Reader, true, true>
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244 (pixel, reader, x1, x2, startX, startY, offsetX, offsetY);
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245 }
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246
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247 targetRow += targetPitch;
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248 }
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249 }
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250 }
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251
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252
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253 void ApplyAffineTransform(Orthanc::ImageAccessor& target,
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254 const Orthanc::ImageAccessor& source,
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255 double a11,
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256 double a12,
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257 double b1,
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258 double a21,
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259 double a22,
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260 double b2,
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261 ImageInterpolation interpolation)
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262 {
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263 if (source.GetFormat() != target.GetFormat())
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264 {
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265 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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266 }
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267
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268 if (interpolation != ImageInterpolation_Nearest &&
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269 interpolation != ImageInterpolation_Bilinear)
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270 {
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271 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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272 }
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273
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274 Matrix a;
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275 a.resize(3, 3);
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276 a(0, 0) = a11;
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277 a(0, 1) = a12;
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278 a(0, 2) = b1;
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279 a(1, 0) = a21;
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280 a(1, 1) = a22;
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281 a(1, 2) = b2;
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282 a(2, 0) = 0;
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283 a(2, 1) = 0;
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284 a(2, 2) = 1;
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285
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286 switch (source.GetFormat())
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287 {
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288 case Orthanc::PixelFormat_Grayscale8:
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289 switch (interpolation)
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290 {
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291 case ImageInterpolation_Nearest:
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292 ApplyAffineInternal<Orthanc::PixelFormat_Grayscale8,
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293 ImageInterpolation_Nearest>(target, source, a);
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294 break;
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295
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296 case ImageInterpolation_Bilinear:
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297 ApplyAffineInternal<Orthanc::PixelFormat_Grayscale8,
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298 ImageInterpolation_Bilinear>(target, source, a);
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299 break;
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300
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301 default:
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302 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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303 }
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304 break;
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305
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306 case Orthanc::PixelFormat_Grayscale16:
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307 switch (interpolation)
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308 {
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309 case ImageInterpolation_Nearest:
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310 ApplyAffineInternal<Orthanc::PixelFormat_Grayscale16,
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311 ImageInterpolation_Nearest>(target, source, a);
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312 break;
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313
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314 case ImageInterpolation_Bilinear:
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315 ApplyAffineInternal<Orthanc::PixelFormat_Grayscale16,
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316 ImageInterpolation_Bilinear>(target, source, a);
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317 break;
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318
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319 default:
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320 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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321 }
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322 break;
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323
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324 case Orthanc::PixelFormat_SignedGrayscale16:
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325 switch (interpolation)
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326 {
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327 case ImageInterpolation_Nearest:
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328 ApplyAffineInternal<Orthanc::PixelFormat_SignedGrayscale16,
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329 ImageInterpolation_Nearest>(target, source, a);
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330 break;
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331
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332 case ImageInterpolation_Bilinear:
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333 ApplyAffineInternal<Orthanc::PixelFormat_SignedGrayscale16,
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334 ImageInterpolation_Bilinear>(target, source, a);
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335 break;
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336
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337 default:
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338 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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339 }
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340 break;
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341
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342 case Orthanc::PixelFormat_RGB24:
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343 switch (interpolation)
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344 {
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345 case ImageInterpolation_Nearest:
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346 ApplyAffineInternal<Orthanc::PixelFormat_RGB24,
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347 ImageInterpolation_Nearest>(target, source, a);
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348 break;
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349
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350 default:
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351 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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352 }
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353 break;
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354
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355 default:
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356 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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357 }
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358 }
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359
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360
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361 template <Orthanc::PixelFormat Format,
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362 ImageInterpolation Interpolation>
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190
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363 static void ApplyProjectiveInternal(Orthanc::ImageAccessor& target,
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364 const Orthanc::ImageAccessor& source,
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365 const Matrix& a,
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366 const Matrix& inva)
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182
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367 {
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368 assert(target.GetFormat() == Format &&
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369 source.GetFormat() == Format);
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370
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371 typedef SubpixelReader<Format, Interpolation> Reader;
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372 typedef typename Reader::PixelType PixelType;
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373
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374 Reader reader(source);
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375 unsigned int x1, y1, x2, y2;
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376
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377 const float floatWidth = source.GetWidth();
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378 const float floatHeight = source.GetHeight();
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379
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190
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380 if (GetProjectiveTransformExtent(x1, y1, x2, y2, a,
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182
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381 source.GetWidth(), source.GetHeight(),
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382 target.GetWidth(), target.GetHeight()))
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383 {
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384 const size_t targetPitch = target.GetPitch();
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385 uint8_t *targetRow = reinterpret_cast<uint8_t*>(reinterpret_cast<PixelType*>(target.GetRow(y1)) + x1);
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386
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387 for (unsigned int y = y1; y <= y2; y++)
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388 {
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389 PixelType *p = reinterpret_cast<PixelType*>(targetRow);
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390
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391 for (unsigned int x = x1; x <= x2; x++)
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392 {
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393 Vector v;
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394 LinearAlgebra::AssignVector(v, static_cast<double>(x) + 0.5,
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395 static_cast<double>(y) + 0.5, 1);
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396
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397 Vector vv = LinearAlgebra::Product(inva, v);
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398
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399 assert(!LinearAlgebra::IsCloseToZero(vv[2]));
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400 const double w = 1.0 / vv[2];
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401 const float sourceX = static_cast<float>(vv[0] * w);
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402 const float sourceY = static_cast<float>(vv[1] * w);
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403
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404 // Make sure no integer overflow will occur after truncation
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405 // (the static_cast<unsigned int> could otherwise throw an
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190
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406 // exception in WebAssembly if strong projective effects)
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182
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407 if (sourceX < floatWidth &&
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408 sourceY < floatHeight)
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409 {
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410 reader.GetValue(*p, sourceX, sourceY);
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411 }
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412 else
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413 {
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414 Reader::Traits::SetZero(*p);
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415 }
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416
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417 p++;
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418 }
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419
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420 targetRow += targetPitch;
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421 }
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422 }
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423 }
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424
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425
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190
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426 void ApplyProjectiveTransform(Orthanc::ImageAccessor& target,
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427 const Orthanc::ImageAccessor& source,
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428 const Matrix& a,
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429 ImageInterpolation interpolation)
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182
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430 {
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431 if (source.GetFormat() != target.GetFormat())
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432 {
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433 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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434 }
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435
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436 if (a.size1() != 3 ||
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437 a.size2() != 3)
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438 {
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439 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize);
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440 }
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441
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442 if (interpolation != ImageInterpolation_Nearest &&
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443 interpolation != ImageInterpolation_Bilinear)
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444 {
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445 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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446 }
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447
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448 // Check whether we are dealing with an affine transform
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449 if (LinearAlgebra::IsCloseToZero(a(2, 0)) &&
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450 LinearAlgebra::IsCloseToZero(a(2, 1)))
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451 {
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452 double w = a(2, 2);
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453 if (LinearAlgebra::IsCloseToZero(w))
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454 {
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190
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455 LOG(ERROR) << "Singular projective matrix";
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182
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456 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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457 }
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458 else
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459 {
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460 ApplyAffineTransform(target, source,
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461 a(0, 0) / w, a(0, 1) / w, a(0, 2) / w,
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462 a(1, 0) / w, a(1, 1) / w, a(1, 2) / w,
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463 interpolation);
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464 return;
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465 }
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466 }
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467
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468 if (target.GetFormat() == Orthanc::PixelFormat_RGB24)
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469 {
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470 Orthanc::ImageProcessing::Set(target, 0, 0, 0, 255);
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471 }
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472 else
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473 {
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474 Orthanc::ImageProcessing::Set(target, 0);
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475 }
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476
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477 Matrix inva;
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478 if (!LinearAlgebra::InvertMatrixUnsafe(inva, a))
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479 {
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480 return;
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481 }
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482
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483 switch (source.GetFormat())
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484 {
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485 case Orthanc::PixelFormat_Grayscale8:
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486 switch (interpolation)
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487 {
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488 case ImageInterpolation_Nearest:
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190
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489 ApplyProjectiveInternal<Orthanc::PixelFormat_Grayscale8,
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490 ImageInterpolation_Nearest>(target, source, a, inva);
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182
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491 break;
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492
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493 case ImageInterpolation_Bilinear:
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190
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494 ApplyProjectiveInternal<Orthanc::PixelFormat_Grayscale8,
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495 ImageInterpolation_Bilinear>(target, source, a, inva);
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182
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496 break;
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497
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498 default:
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499 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
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500 }
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501 break;
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502
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503 case Orthanc::PixelFormat_Grayscale16:
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504 switch (interpolation)
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505 {
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506 case ImageInterpolation_Nearest:
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190
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507 ApplyProjectiveInternal<Orthanc::PixelFormat_Grayscale16,
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508 ImageInterpolation_Nearest>(target, source, a, inva);
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182
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509 break;
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510
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511 case ImageInterpolation_Bilinear:
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190
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512 ApplyProjectiveInternal<Orthanc::PixelFormat_Grayscale16,
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513 ImageInterpolation_Bilinear>(target, source, a, inva);
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182
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514 break;
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515
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516 default:
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517 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
|
|
518 }
|
|
519 break;
|
|
520
|
|
521 case Orthanc::PixelFormat_SignedGrayscale16:
|
|
522 switch (interpolation)
|
|
523 {
|
|
524 case ImageInterpolation_Nearest:
|
190
|
525 ApplyProjectiveInternal<Orthanc::PixelFormat_SignedGrayscale16,
|
|
526 ImageInterpolation_Nearest>(target, source, a, inva);
|
182
|
527 break;
|
|
528
|
|
529 case ImageInterpolation_Bilinear:
|
190
|
530 ApplyProjectiveInternal<Orthanc::PixelFormat_SignedGrayscale16,
|
|
531 ImageInterpolation_Bilinear>(target, source, a, inva);
|
182
|
532 break;
|
|
533
|
|
534 default:
|
|
535 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
|
|
536 }
|
|
537 break;
|
|
538
|
|
539 case Orthanc::PixelFormat_RGB24:
|
|
540 switch (interpolation)
|
|
541 {
|
|
542 case ImageInterpolation_Nearest:
|
190
|
543 ApplyProjectiveInternal<Orthanc::PixelFormat_RGB24,
|
|
544 ImageInterpolation_Nearest>(target, source, a, inva);
|
182
|
545 break;
|
|
546
|
|
547 default:
|
|
548 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
|
|
549 }
|
|
550 break;
|
|
551
|
|
552 default:
|
|
553 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented);
|
|
554 }
|
|
555 }
|
|
556 }
|