Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Toolbox/SubpixelReader.h @ 1871:7053b8a0aaec
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 11 Jan 2022 11:18:48 +0100 |
| parents | 3889ae96d2e9 |
| children | 07964689cb0b |
| rev | line source |
|---|---|
| 182 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 182 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
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9 * modify it under the terms of the GNU Lesser General Public License |
| 182 | 10 * as published by the Free Software Foundation, either version 3 of |
| 11 * the License, or (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
|
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
| 182 | 21 **/ |
| 22 | |
| 23 | |
| 24 #pragma once | |
| 25 | |
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26 #include "../StoneEnumerations.h" |
| 182 | 27 #include "GeometryToolbox.h" |
| 28 | |
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29 #include <Images/ImageTraits.h> |
| 182 | 30 |
| 31 #include <boost/noncopyable.hpp> | |
| 32 #include <cmath> | |
| 33 | |
| 34 namespace OrthancStone | |
| 35 { | |
| 36 namespace Internals | |
| 37 { | |
| 38 class SubpixelReaderBase : public boost::noncopyable | |
| 39 { | |
| 40 private: | |
| 41 const Orthanc::ImageAccessor& source_; | |
| 42 unsigned int width_; | |
| 43 unsigned int height_; | |
| 44 | |
| 45 public: | |
| 1571 | 46 explicit SubpixelReaderBase(const Orthanc::ImageAccessor& source) : |
| 182 | 47 source_(source), |
| 48 width_(source.GetWidth()), | |
| 49 height_(source.GetHeight()) | |
| 50 { | |
| 51 } | |
| 52 | |
| 53 ORTHANC_FORCE_INLINE | |
| 54 const Orthanc::ImageAccessor& GetSource() const | |
| 55 { | |
| 56 return source_; | |
| 57 } | |
| 58 | |
| 59 ORTHANC_FORCE_INLINE | |
| 60 unsigned int GetWidth() const | |
| 61 { | |
| 62 return width_; | |
| 63 } | |
| 64 | |
| 65 ORTHANC_FORCE_INLINE | |
| 66 unsigned int GetHeight() const | |
| 67 { | |
| 68 return height_; | |
| 69 } | |
| 70 }; | |
| 71 } | |
| 72 | |
| 73 | |
| 74 template <Orthanc::PixelFormat Format, | |
| 75 ImageInterpolation Interpolation> | |
| 76 class SubpixelReader; | |
| 77 | |
| 78 | |
| 79 template <Orthanc::PixelFormat Format> | |
| 80 class SubpixelReader<Format, ImageInterpolation_Nearest> : | |
| 81 public Internals::SubpixelReaderBase | |
| 82 { | |
| 83 public: | |
| 84 typedef Orthanc::PixelTraits<Format> Traits; | |
| 85 typedef typename Traits::PixelType PixelType; | |
| 86 | |
| 1571 | 87 explicit SubpixelReader(const Orthanc::ImageAccessor& source) : |
| 182 | 88 SubpixelReaderBase(source) |
| 89 { | |
| 90 } | |
| 91 | |
| 92 inline bool GetValue(PixelType& target, | |
| 93 float x, | |
| 94 float y) const; | |
| 183 | 95 |
| 96 inline bool GetFloatValue(float& target, | |
| 97 float x, | |
| 98 float y) const; | |
| 182 | 99 }; |
| 183 | 100 |
| 182 | 101 |
| 102 | |
| 103 template <Orthanc::PixelFormat Format> | |
| 104 class SubpixelReader<Format, ImageInterpolation_Bilinear> : | |
| 105 public Internals::SubpixelReaderBase | |
| 106 { | |
| 107 public: | |
| 108 typedef Orthanc::PixelTraits<Format> Traits; | |
| 109 typedef typename Traits::PixelType PixelType; | |
| 110 | |
| 1571 | 111 explicit SubpixelReader(const Orthanc::ImageAccessor& source) : |
| 182 | 112 SubpixelReaderBase(source) |
| 113 { | |
| 114 } | |
| 115 | |
| 183 | 116 inline bool GetFloatValue(float& target, |
| 117 float x, | |
| 118 float y) const; | |
| 119 | |
| 182 | 120 inline bool GetValue(PixelType& target, |
| 121 float x, | |
| 183 | 122 float y) const; |
| 182 | 123 }; |
| 124 | |
| 125 | |
| 126 | |
| 127 template <Orthanc::PixelFormat Format> | |
| 128 bool SubpixelReader<Format, ImageInterpolation_Nearest>::GetValue(PixelType& target, | |
| 129 float x, | |
| 130 float y) const | |
| 131 { | |
| 132 if (x < 0 || | |
| 133 y < 0) | |
| 134 { | |
| 135 return false; | |
| 136 } | |
| 137 else | |
| 138 { | |
| 139 unsigned int ux = static_cast<unsigned int>(std::floor(x)); | |
| 140 unsigned int uy = static_cast<unsigned int>(std::floor(y)); | |
| 141 | |
| 142 if (ux < GetWidth() && | |
| 143 uy < GetHeight()) | |
| 144 { | |
| 145 Orthanc::ImageTraits<Format>::GetPixel(target, GetSource(), ux, uy); | |
| 146 return true; | |
| 147 } | |
| 148 else | |
| 149 { | |
| 150 return false; | |
| 151 } | |
| 152 } | |
| 153 } | |
| 154 | |
| 155 | |
| 156 | |
| 157 template <Orthanc::PixelFormat Format> | |
| 183 | 158 bool SubpixelReader<Format, ImageInterpolation_Nearest>::GetFloatValue(float& target, |
| 159 float x, | |
| 160 float y) const | |
| 161 { | |
| 162 PixelType value; | |
| 163 | |
| 164 if (GetValue(value, x, y)) | |
| 165 { | |
| 166 target = Traits::PixelToFloat(value); | |
| 167 return true; | |
| 168 } | |
| 169 else | |
| 170 { | |
| 171 return false; | |
| 172 } | |
| 173 } | |
| 174 | |
| 175 | |
| 176 | |
| 177 template <Orthanc::PixelFormat Format> | |
| 182 | 178 bool SubpixelReader<Format, ImageInterpolation_Bilinear>::GetValue(PixelType& target, |
| 179 float x, | |
| 183 | 180 float y) const |
| 181 { | |
| 182 float value; | |
| 183 | |
| 184 if (GetFloatValue(value, x, y)) | |
| 185 { | |
| 186 Traits::FloatToPixel(target, value); | |
| 187 return true; | |
| 188 } | |
| 189 else | |
| 190 { | |
| 191 return false; | |
| 192 } | |
| 193 } | |
| 194 | |
| 195 | |
| 196 | |
| 197 template <Orthanc::PixelFormat Format> | |
| 198 bool SubpixelReader<Format, ImageInterpolation_Bilinear>::GetFloatValue(float& target, | |
| 199 float x, | |
| 200 float y) const | |
| 182 | 201 { |
| 202 x -= 0.5f; | |
| 203 y -= 0.5f; | |
| 204 | |
| 205 if (x < 0 || | |
| 206 y < 0) | |
| 207 { | |
| 208 return false; | |
| 209 } | |
| 210 else | |
| 211 { | |
| 212 unsigned int ux = static_cast<unsigned int>(std::floor(x)); | |
| 213 unsigned int uy = static_cast<unsigned int>(std::floor(y)); | |
| 214 | |
| 215 float f00, f01, f10, f11; | |
| 216 | |
| 217 if (ux < GetWidth() && | |
| 218 uy < GetHeight()) | |
| 219 { | |
| 220 f00 = Orthanc::ImageTraits<Format>::GetFloatPixel(GetSource(), ux, uy); | |
| 221 } | |
| 222 else | |
| 223 { | |
| 224 return false; | |
| 225 } | |
| 226 | |
| 227 if (ux + 1 < GetWidth()) | |
| 228 { | |
| 229 f01 = Orthanc::ImageTraits<Format>::GetFloatPixel(GetSource(), ux + 1, uy); | |
| 230 } | |
| 231 else | |
| 232 { | |
| 233 f01 = f00; | |
| 234 } | |
| 235 | |
| 236 if (uy + 1 < GetHeight()) | |
| 237 { | |
| 238 f10 = Orthanc::ImageTraits<Format>::GetFloatPixel(GetSource(), ux, uy + 1); | |
| 239 } | |
| 240 else | |
| 241 { | |
| 242 f10 = f00; | |
| 243 } | |
| 244 | |
| 245 if (ux + 1 < GetWidth() && | |
| 246 uy + 1 < GetHeight()) | |
| 247 { | |
| 248 f11 = Orthanc::ImageTraits<Format>::GetFloatPixel(GetSource(), ux + 1, uy + 1); | |
| 249 } | |
| 250 else | |
| 251 { | |
| 252 f11 = f00; | |
| 253 } | |
| 254 | |
| 255 float ax = x - static_cast<float>(ux); | |
| 256 float ay = y - static_cast<float>(uy); | |
| 183 | 257 target = GeometryToolbox::ComputeBilinearInterpolationUnitSquare(ax, ay, f00, f01, f10, f11); |
| 182 | 258 |
| 259 return true; | |
| 260 } | |
| 261 } | |
| 262 } |