Mercurial > hg > orthanc-wsi
comparison Framework/ImageToolbox.cpp @ 0:4a7a53257c7d
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 22 Oct 2016 21:48:33 +0200 |
parents | |
children | 7a88c614be04 |
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-1:000000000000 | 0:4a7a53257c7d |
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1 /** | |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * | |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU Affero General Public License | |
8 * as published by the Free Software Foundation, either version 3 of | |
9 * the License, or (at your option) any later version. | |
10 * | |
11 * This program is distributed in the hope that it will be useful, but | |
12 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 * Affero General Public License for more details. | |
15 * | |
16 * You should have received a copy of the GNU Affero General Public License | |
17 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 **/ | |
19 | |
20 | |
21 #include "ImageToolbox.h" | |
22 | |
23 #include "Jpeg2000Reader.h" | |
24 #include "Jpeg2000Writer.h" | |
25 | |
26 #include "Orthanc/Core/OrthancException.h" | |
27 #include "Orthanc/Core/Images/ImageProcessing.h" | |
28 #include "Orthanc/Core/Images/PngReader.h" | |
29 #include "Orthanc/Core/Images/PngWriter.h" | |
30 #include "Orthanc/Core/Images/JpegReader.h" | |
31 #include "Orthanc/Core/Images/JpegWriter.h" | |
32 #include "Orthanc/Core/Logging.h" | |
33 | |
34 #include <string.h> | |
35 #include <memory> | |
36 | |
37 | |
38 namespace OrthancWSI | |
39 { | |
40 namespace ImageToolbox | |
41 { | |
42 Orthanc::ImageAccessor* Allocate(Orthanc::PixelFormat format, | |
43 unsigned int width, | |
44 unsigned int height) | |
45 { | |
46 return new Orthanc::Image(format, width, height, false); | |
47 } | |
48 | |
49 | |
50 void Embed(Orthanc::ImageAccessor& target, | |
51 const Orthanc::ImageAccessor& source, | |
52 unsigned int x, | |
53 unsigned int y) | |
54 { | |
55 if (target.GetFormat() != source.GetFormat()) | |
56 { | |
57 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
58 } | |
59 | |
60 if (x >= target.GetWidth() || | |
61 y >= target.GetHeight()) | |
62 { | |
63 return; | |
64 } | |
65 | |
66 unsigned int h = std::min(source.GetHeight(), target.GetHeight() - y); | |
67 unsigned int w = std::min(source.GetWidth(), target.GetWidth() - x); | |
68 | |
69 Orthanc::ImageAccessor targetRegion = target.GetRegion(x, y, w, h); | |
70 Orthanc::ImageAccessor sourceRegion = source.GetRegion(0, 0, w, h); | |
71 Orthanc::ImageProcessing::Copy(targetRegion, sourceRegion); | |
72 } | |
73 | |
74 | |
75 | |
76 void Set(Orthanc::ImageAccessor& image, | |
77 uint8_t r, | |
78 uint8_t g, | |
79 uint8_t b) | |
80 { | |
81 if (image.GetWidth() == 0 || | |
82 image.GetHeight() == 0) | |
83 { | |
84 return; | |
85 } | |
86 | |
87 uint8_t grayscale = (2126 * static_cast<uint16_t>(r) + | |
88 7152 * static_cast<uint16_t>(g) + | |
89 0722 * static_cast<uint16_t>(b)) / 10000; | |
90 | |
91 switch (image.GetFormat()) | |
92 { | |
93 case Orthanc::PixelFormat_Grayscale8: | |
94 { | |
95 for (unsigned int y = 0; y < image.GetHeight(); y++) | |
96 { | |
97 memset(image.GetRow(y), grayscale, image.GetWidth()); | |
98 } | |
99 | |
100 break; | |
101 } | |
102 | |
103 case Orthanc::PixelFormat_RGB24: | |
104 { | |
105 for (unsigned int y = 0; y < image.GetHeight(); y++) | |
106 { | |
107 uint8_t* p = reinterpret_cast<uint8_t*>(image.GetRow(y)); | |
108 for (unsigned int x = 0; x < image.GetWidth(); x++, p += 3) | |
109 { | |
110 p[0] = r; | |
111 p[1] = g; | |
112 p[2] = b; | |
113 } | |
114 } | |
115 | |
116 break; | |
117 } | |
118 | |
119 default: | |
120 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
121 } | |
122 } | |
123 | |
124 | |
125 Orthanc::ImageAccessor* DecodeTile(const std::string& source, | |
126 ImageCompression compression) | |
127 { | |
128 switch (compression) | |
129 { | |
130 case ImageCompression_Png: | |
131 { | |
132 std::auto_ptr<Orthanc::PngReader> reader(new Orthanc::PngReader); | |
133 reader->ReadFromMemory(source); | |
134 return reader.release(); | |
135 } | |
136 | |
137 case ImageCompression_Jpeg: | |
138 { | |
139 std::auto_ptr<Orthanc::JpegReader> reader(new Orthanc::JpegReader); | |
140 reader->ReadFromMemory(source); | |
141 return reader.release(); | |
142 } | |
143 | |
144 case ImageCompression_Jpeg2000: | |
145 { | |
146 std::auto_ptr<Jpeg2000Reader> reader(new Jpeg2000Reader); | |
147 reader->ReadFromMemory(source); | |
148 return reader.release(); | |
149 } | |
150 | |
151 default: | |
152 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
153 } | |
154 } | |
155 | |
156 | |
157 void EncodeTile(std::string& target, | |
158 const Orthanc::ImageAccessor& source, | |
159 ImageCompression compression, | |
160 uint8_t quality) | |
161 { | |
162 if (compression == ImageCompression_None) | |
163 { | |
164 unsigned int pitch = GetBytesPerPixel(source.GetFormat()) * source.GetWidth(); | |
165 target.resize(pitch * source.GetHeight()); | |
166 | |
167 for (unsigned int i = 0; i < source.GetHeight(); i++) | |
168 { | |
169 memcpy(&target[i * pitch], source.GetConstRow(i), pitch); | |
170 } | |
171 } | |
172 else | |
173 { | |
174 std::auto_ptr<Orthanc::IImageWriter> writer; | |
175 | |
176 switch (compression) | |
177 { | |
178 case ImageCompression_Png: | |
179 writer.reset(new Orthanc::PngWriter); | |
180 break; | |
181 | |
182 case ImageCompression_Jpeg: | |
183 writer.reset(new Orthanc::JpegWriter); | |
184 dynamic_cast<Orthanc::JpegWriter&>(*writer).SetQuality(quality); | |
185 break; | |
186 | |
187 case ImageCompression_Jpeg2000: | |
188 writer.reset(new Jpeg2000Writer); | |
189 break; | |
190 | |
191 default: | |
192 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
193 } | |
194 | |
195 writer->WriteToMemory(target, source); | |
196 } | |
197 } | |
198 | |
199 | |
200 void ChangeTileCompression(std::string& target, | |
201 const std::string& source, | |
202 ImageCompression sourceCompression, | |
203 ImageCompression targetCompression, | |
204 uint8_t quality) | |
205 { | |
206 if (sourceCompression == targetCompression) | |
207 { | |
208 target = source; | |
209 } | |
210 else | |
211 { | |
212 std::auto_ptr<Orthanc::ImageAccessor> decoded(DecodeTile(source, sourceCompression)); | |
213 EncodeTile(target, *decoded, targetCompression, quality); | |
214 } | |
215 } | |
216 | |
217 | |
218 static uint8_t GetPixelValue(const Orthanc::ImageAccessor& source, | |
219 unsigned int x, | |
220 unsigned int y, | |
221 unsigned int channel, | |
222 int offsetX, | |
223 int offsetY) | |
224 { | |
225 assert(channel < source.GetBytesPerPixel()); | |
226 assert(source.GetFormat() == Orthanc::PixelFormat_Grayscale8 || | |
227 source.GetFormat() == Orthanc::PixelFormat_RGB24 || | |
228 source.GetFormat() == Orthanc::PixelFormat_RGBA32); // 16bpp is unsupported | |
229 | |
230 if (static_cast<int>(x) + offsetX < 0) | |
231 { | |
232 x = 0; | |
233 } | |
234 else | |
235 { | |
236 x += offsetX; | |
237 if (x >= source.GetWidth()) | |
238 { | |
239 x = source.GetWidth() - 1; | |
240 } | |
241 } | |
242 | |
243 if (static_cast<int>(y) + offsetY < 0) | |
244 { | |
245 y = 0; | |
246 } | |
247 else | |
248 { | |
249 y += offsetY; | |
250 if (y >= source.GetHeight()) | |
251 { | |
252 y = source.GetHeight() - 1; | |
253 } | |
254 } | |
255 | |
256 return *(reinterpret_cast<const uint8_t*>(source.GetConstBuffer()) + | |
257 y * source.GetPitch() + x * source.GetBytesPerPixel() + channel); | |
258 } | |
259 | |
260 | |
261 static uint8_t SmoothPixelValue(const Orthanc::ImageAccessor& source, | |
262 unsigned int x, | |
263 unsigned int y, | |
264 unsigned int channel) | |
265 { | |
266 static const uint32_t kernel[5] = { 1, 4, 6, 4, 1 }; | |
267 static const uint32_t normalization = 2 * (1 + 4 + 6 + 4 + 1); | |
268 | |
269 uint32_t accumulator = 0; | |
270 | |
271 // Horizontal smoothing | |
272 for (int offset = -2; offset <= 2; offset++) | |
273 { | |
274 accumulator += kernel[offset + 2] * GetPixelValue(source, x, y, channel, offset, 0); | |
275 } | |
276 | |
277 // Vertical smoothing | |
278 for (int offset = -2; offset <= 2; offset++) | |
279 { | |
280 accumulator += kernel[offset + 2] * GetPixelValue(source, x, y, channel, 0, offset); | |
281 } | |
282 | |
283 return static_cast<uint8_t>(accumulator / normalization); | |
284 } | |
285 | |
286 | |
287 Orthanc::ImageAccessor* Halve(const Orthanc::ImageAccessor& source, | |
288 bool smooth) | |
289 { | |
290 if (source.GetWidth() % 2 == 1 || | |
291 source.GetHeight() % 2 == 1) | |
292 { | |
293 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize); | |
294 } | |
295 | |
296 if (source.GetFormat() != Orthanc::PixelFormat_Grayscale8 && | |
297 source.GetFormat() != Orthanc::PixelFormat_RGB24 && | |
298 source.GetFormat() != Orthanc::PixelFormat_RGBA32) // 16bpp is not supported (*) | |
299 { | |
300 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
301 } | |
302 | |
303 unsigned int channelsCount = source.GetBytesPerPixel(); // OK tx (*) | |
304 | |
305 std::auto_ptr<Orthanc::ImageAccessor> result(Allocate(source.GetFormat(), | |
306 source.GetWidth() / 2, | |
307 source.GetHeight() / 2)); | |
308 | |
309 for (unsigned int y = 0; y < source.GetHeight() / 2; y++) | |
310 { | |
311 uint8_t* q = reinterpret_cast<uint8_t*>(result->GetRow(y)); | |
312 | |
313 for (unsigned int x = 0; x < source.GetWidth() / 2; x++, q += 3) | |
314 { | |
315 for (unsigned int c = 0; c < channelsCount; c++) | |
316 { | |
317 if (smooth) | |
318 { | |
319 q[c] = SmoothPixelValue(source, 2 * x, 2 * y, c); | |
320 } | |
321 else | |
322 { | |
323 q[c] = GetPixelValue(source, 2 * x, 2 * y, c, 0, 0); | |
324 } | |
325 } | |
326 } | |
327 } | |
328 | |
329 return result.release(); | |
330 } | |
331 | |
332 | |
333 Orthanc::ImageAccessor* Clone(const Orthanc::ImageAccessor& accessor) | |
334 { | |
335 std::auto_ptr<Orthanc::ImageAccessor> result(Allocate(accessor.GetFormat(), | |
336 accessor.GetWidth(), | |
337 accessor.GetHeight())); | |
338 Embed(*result, accessor, 0, 0); | |
339 | |
340 return result.release(); | |
341 } | |
342 | |
343 | |
344 Orthanc::ImageAccessor* Render(ITiledPyramid& pyramid, | |
345 unsigned int level) | |
346 { | |
347 std::auto_ptr<Orthanc::ImageAccessor> result(Allocate(pyramid.GetPixelFormat(), | |
348 pyramid.GetLevelWidth(level), | |
349 pyramid.GetLevelHeight(level))); | |
350 | |
351 LOG(INFO) << "Rendering a tiled image of size " << result->GetWidth() << "x" << result->GetHeight(); | |
352 | |
353 for (unsigned int y = 0; y < result->GetHeight(); y += pyramid.GetTileHeight()) | |
354 { | |
355 for (unsigned int x = 0; x < result->GetWidth(); x += pyramid.GetTileWidth()) | |
356 { | |
357 std::auto_ptr<Orthanc::ImageAccessor> tile(pyramid.DecodeTile(level, | |
358 x / pyramid.GetTileWidth(), | |
359 y / pyramid.GetTileHeight())); | |
360 Embed(*result, *tile, x, y); | |
361 } | |
362 } | |
363 | |
364 return result.release(); | |
365 } | |
366 } | |
367 } |