Mercurial > hg > orthanc-stone
annotate Framework/Layers/GrayscaleFrameRenderer.cpp @ 372:17d1814c2fd4 am-2
integration default->am-2
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 05 Nov 2018 10:05:33 +0100 |
parents | 557c8ff1db5c |
children | 814fa32e2fcc |
rev | line source |
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0 | 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) 2017-2018 Osimis S.A., Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
47 | 8 * modify it under the terms of the GNU Affero General Public License |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
0 | 11 * |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
47 | 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
0 | 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 **/ | |
20 | |
21 | |
22 #include "GrayscaleFrameRenderer.h" | |
23 | |
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24 #include <Core/OrthancException.h> |
0 | 25 |
26 namespace OrthancStone | |
27 { | |
28 CairoSurface* GrayscaleFrameRenderer::GenerateDisplay(const RenderStyle& style) | |
29 { | |
338 | 30 assert(frame_->GetFormat() == Orthanc::PixelFormat_Float32); |
31 | |
0 | 32 std::auto_ptr<CairoSurface> result; |
33 | |
34 float windowCenter, windowWidth; | |
35 style.ComputeWindowing(windowCenter, windowWidth, | |
36 defaultWindowCenter_, defaultWindowWidth_); | |
37 | |
38 float x0 = windowCenter - windowWidth / 2.0f; | |
39 float x1 = windowCenter + windowWidth / 2.0f; | |
40 | |
41 //LOG(INFO) << "Window: " << x0 << " => " << x1; | |
42 | |
43 result.reset(new CairoSurface(frame_->GetWidth(), frame_->GetHeight())); | |
44 | |
45 const uint8_t* lut = NULL; | |
46 if (style.applyLut_) | |
47 { | |
48 if (Orthanc::EmbeddedResources::GetFileResourceSize(style.lut_) != 3 * 256) | |
49 { | |
50 // Invalid colormap | |
51 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
52 } | |
53 | |
54 lut = reinterpret_cast<const uint8_t*>(Orthanc::EmbeddedResources::GetFileResourceBuffer(style.lut_)); | |
55 } | |
106 | 56 |
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57 Orthanc::ImageAccessor target; |
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58 result->GetWriteableAccessor(target); |
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59 |
106 | 60 const unsigned int width = target.GetWidth(); |
61 const unsigned int height = target.GetHeight(); | |
62 | |
63 for (unsigned int y = 0; y < height; y++) | |
0 | 64 { |
65 const float* p = reinterpret_cast<const float*>(frame_->GetConstRow(y)); | |
66 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); | |
67 | |
106 | 68 for (unsigned int x = 0; x < width; x++, p++, q += 4) |
0 | 69 { |
70 uint8_t v = 0; | |
71 if (windowWidth >= 0.001f) // Avoid division by zero | |
72 { | |
73 if (*p >= x1) | |
74 { | |
75 v = 255; | |
76 } | |
77 else if (*p <= x0) | |
78 { | |
79 v = 0; | |
80 } | |
81 else | |
82 { | |
83 // https://en.wikipedia.org/wiki/Linear_interpolation | |
84 v = static_cast<uint8_t>(255.0f * (*p - x0) / (x1 - x0)); | |
85 } | |
86 | |
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87 if (style.reverse_ ^ (photometric_ == Orthanc::PhotometricInterpretation_Monochrome1)) |
0 | 88 { |
89 v = 255 - v; | |
90 } | |
91 } | |
92 | |
93 if (style.applyLut_) | |
94 { | |
95 assert(lut != NULL); | |
96 q[3] = 255; | |
97 q[2] = lut[3 * v]; | |
98 q[1] = lut[3 * v + 1]; | |
99 q[0] = lut[3 * v + 2]; | |
100 } | |
101 else | |
102 { | |
103 q[3] = 255; | |
104 q[2] = v; | |
105 q[1] = v; | |
106 q[0] = v; | |
107 } | |
108 } | |
109 } | |
110 | |
111 return result.release(); | |
112 } | |
113 | |
114 | |
115 GrayscaleFrameRenderer::GrayscaleFrameRenderer(Orthanc::ImageAccessor* frame, | |
116 const DicomFrameConverter& converter, | |
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117 const CoordinateSystem3D& frameSlice, |
0 | 118 double pixelSpacingX, |
119 double pixelSpacingY, | |
120 bool isFullQuality) : | |
77 | 121 FrameRenderer(frameSlice, pixelSpacingX, pixelSpacingY, isFullQuality), |
0 | 122 frame_(frame), |
123 defaultWindowCenter_(converter.GetDefaultWindowCenter()), | |
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124 defaultWindowWidth_(converter.GetDefaultWindowWidth()), |
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125 photometric_(converter.GetPhotometricInterpretation()) |
0 | 126 { |
127 if (frame == NULL) | |
128 { | |
129 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
130 } | |
131 | |
338 | 132 converter.ConvertFrameInplace(frame_); |
0 | 133 assert(frame_.get() != NULL); |
134 | |
135 if (frame_->GetFormat() != Orthanc::PixelFormat_Float32) | |
136 { | |
137 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
138 } | |
139 } | |
140 } |