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annotate Core/Images/ImageProcessing.h @ 4082:2e1564f57542

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ImageProcessing::FitSizeKeepAspectRatio()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 23 Jun 2020 07:39:23 +0200
parents 73c22208272f
children
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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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 General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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32
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33
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34 #pragma once
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35
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36 #include "../OrthancFramework.h"
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37
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38 #include "ImageAccessor.h"
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39 #include <vector>
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40
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41 #include <stdint.h>
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42 #include <algorithm>
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43 #include <boost/noncopyable.hpp>
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44
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45 namespace Orthanc
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46 {
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47 class ORTHANC_PUBLIC ImageProcessing : public boost::noncopyable
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48 {
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49 public:
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50 class ImagePoint
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51 {
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52 int32_t x_;
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53 int32_t y_;
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54
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55 public:
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56 ImagePoint(int32_t x, int32_t y)
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57 : x_(x),
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58 y_(y)
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59 {
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60 }
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61
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62 int32_t GetX() const {return x_;}
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63
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64 int32_t GetY() const {return y_;}
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65
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66 void Set(int32_t x, int32_t y)
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67 {
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68 x_ = x;
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69 y_ = y;
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70 }
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71
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72 void ClipTo(int32_t minX, int32_t maxX, int32_t minY, int32_t maxY)
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73 {
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74 x_ = std::max(minX, std::min(maxX, x_));
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75 y_ = std::max(minY, std::min(maxY, y_));
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76 }
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77
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78 double GetDistanceTo(const ImagePoint& other) const;
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80 double GetDistanceToLine(double a, double b, double c) const; // where ax + by + c = 0 is the equation of the line
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81 };
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82
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83 static void Copy(ImageAccessor& target,
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84 const ImageAccessor& source);
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86 static void Convert(ImageAccessor& target,
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87 const ImageAccessor& source);
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88
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89 static void ApplyWindowing_Deprecated(ImageAccessor& target,
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90 const ImageAccessor& source,
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91 float windowCenter,
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92 float windowWidth,
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93 float rescaleSlope,
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94 float rescaleIntercept,
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95 bool invert);
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96
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97 static void Set(ImageAccessor& image,
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98 int64_t value);
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100 static void Set(ImageAccessor& image,
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101 uint8_t red,
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102 uint8_t green,
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103 uint8_t blue,
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104 uint8_t alpha);
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105
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106 static void Set(ImageAccessor& image,
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107 uint8_t red,
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108 uint8_t green,
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109 uint8_t blue,
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110 ImageAccessor& alpha);
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111
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112 static void ShiftRight(ImageAccessor& target,
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113 unsigned int shift);
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114
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115 static void ShiftLeft(ImageAccessor& target,
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116 unsigned int shift);
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117
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118 static void GetMinMaxIntegerValue(int64_t& minValue,
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119 int64_t& maxValue,
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120 const ImageAccessor& image);
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121
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122 static void GetMinMaxFloatValue(float& minValue,
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123 float& maxValue,
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124 const ImageAccessor& image);
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125
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126 static void AddConstant(ImageAccessor& image,
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127 int64_t value);
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128
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129 // "useRound" is expensive
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130 static void MultiplyConstant(ImageAccessor& image,
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131 float factor,
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132 bool useRound);
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133
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134 // Computes "(x + offset) * scaling" inplace. "useRound" is expensive.
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135 static void ShiftScale(ImageAccessor& image,
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136 float offset,
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137 float scaling,
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138 bool useRound);
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139
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140 static void ShiftScale(ImageAccessor& target,
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141 const ImageAccessor& source,
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142 float offset,
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143 float scaling,
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144 bool useRound);
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145
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146 // Computes "x * scaling + offset" inplace. "useRound" is expensive.
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147 static void ShiftScale2(ImageAccessor& image,
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148 float offset,
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149 float scaling,
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150 bool useRound);
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151
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152 static void ShiftScale2(ImageAccessor& target,
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153 const ImageAccessor& source,
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154 float offset,
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155 float scaling,
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156 bool useRound);
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157
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158 static void Invert(ImageAccessor& image);
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159
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160 static void Invert(ImageAccessor& image, int64_t maxValue);
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161
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162 static void DrawLineSegment(ImageAccessor& image,
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163 int x0,
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164 int y0,
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165 int x1,
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166 int y1,
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167 int64_t value);
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168
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169 static void DrawLineSegment(ImageAccessor& image,
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170 int x0,
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171 int y0,
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172 int x1,
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173 int y1,
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174 uint8_t red,
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175 uint8_t green,
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176 uint8_t blue,
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177 uint8_t alpha);
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178
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179 static void FillPolygon(ImageAccessor& image,
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180 const std::vector<ImagePoint>& points,
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181 int64_t value);
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182
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183 static void Resize(ImageAccessor& target,
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184 const ImageAccessor& source);
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185
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186 static ImageAccessor* Halve(const ImageAccessor& source,
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187 bool forceMinimalPitch);
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188
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189 static void FlipX(ImageAccessor& image);
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190
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191 static void FlipY(ImageAccessor& image);
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192
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193 static void SeparableConvolution(ImageAccessor& image /* inplace */,
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194 const std::vector<float>& horizontal,
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195 size_t horizontalAnchor,
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196 const std::vector<float>& vertical,
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197 size_t verticalAnchor);
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198
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199 static void SmoothGaussian5x5(ImageAccessor& image);
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200
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201 static void FitSize(ImageAccessor& target,
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202 const ImageAccessor& source);
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203
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204 // Resize the image to the given width/height. The resized image
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205 // occupies the entire canvas (aspect ratio is not preserved).
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206 static ImageAccessor* FitSize(const ImageAccessor& source,
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207 unsigned int width,
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208 unsigned int height);
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209
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210 // Resize an image, but keeps its original aspect ratio. Zeros are
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211 // added around the image to reach the specified size.
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212 static ImageAccessor* FitSizeKeepAspectRatio(const ImageAccessor& source,
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213 unsigned int width,
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214 unsigned int height);
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215 };
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216 }