annotate Framework/Deprecated/Layers/GrayscaleFrameRenderer.cpp @ 1279:7ec8fea061b9 broker

integration mainline->broker
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 04 Feb 2020 15:20:08 +0100
parents 2d8ab34c8c91
children 8a0a62189f46
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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) 2017-2020 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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28956ed68280 agpl license
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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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22 #include "GrayscaleFrameRenderer.h"
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23
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24 #include <Core/Images/Image.h>
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25 #include <Core/OrthancException.h>
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26
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27 namespace Deprecated
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28 {
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29 OrthancStone::CairoSurface* GrayscaleFrameRenderer::GenerateDisplay(const RenderStyle& style)
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30 {
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31 assert(frame_->GetFormat() == Orthanc::PixelFormat_Float32);
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33 std::auto_ptr<OrthancStone::CairoSurface> result;
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35 float windowCenter, windowWidth;
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36 style.ComputeWindowing(windowCenter, windowWidth,
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37 defaultWindowCenter_, defaultWindowWidth_);
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38
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39 float x0 = windowCenter - windowWidth / 2.0f;
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40 float x1 = windowCenter + windowWidth / 2.0f;
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42 //LOG(INFO) << "Window: " << x0 << " => " << x1;
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44 result.reset(new OrthancStone::CairoSurface(frame_->GetWidth(), frame_->GetHeight(), false /* no alpha */));
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46 const uint8_t* lut = NULL;
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47 if (style.applyLut_)
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48 {
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49 if (Orthanc::EmbeddedResources::GetFileResourceSize(style.lut_) != 3 * 256)
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50 {
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51 // Invalid colormap
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52 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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53 }
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55 lut = reinterpret_cast<const uint8_t*>(Orthanc::EmbeddedResources::GetFileResourceBuffer(style.lut_));
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56 }
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57
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58 Orthanc::ImageAccessor target;
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59 result->GetWriteableAccessor(target);
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60
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61 const unsigned int width = target.GetWidth();
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62 const unsigned int height = target.GetHeight();
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63
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64 for (unsigned int y = 0; y < height; y++)
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65 {
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66 const float* p = reinterpret_cast<const float*>(frame_->GetConstRow(y));
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67 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y));
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69 for (unsigned int x = 0; x < width; x++, p++, q += 4)
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70 {
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71 uint8_t v = 0;
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72 if (windowWidth >= 0.001f) // Avoid division by zero
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73 {
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74 if (*p >= x1)
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75 {
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76 v = 255;
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77 }
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78 else if (*p <= x0)
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79 {
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80 v = 0;
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81 }
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82 else
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83 {
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84 // https://en.wikipedia.org/wiki/Linear_interpolation
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85 v = static_cast<uint8_t>(255.0f * (*p - x0) / (x1 - x0));
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86 }
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87
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88 if (style.reverse_ ^ (photometric_ == Orthanc::PhotometricInterpretation_Monochrome1))
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89 {
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90 v = 255 - v;
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91 }
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92 }
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93
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94 if (style.applyLut_)
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95 {
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96 assert(lut != NULL);
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97 q[3] = 255;
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98 q[2] = lut[3 * v];
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99 q[1] = lut[3 * v + 1];
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100 q[0] = lut[3 * v + 2];
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101 }
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102 else
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103 {
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104 q[3] = 255;
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105 q[2] = v;
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106 q[1] = v;
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107 q[0] = v;
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108 }
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109 }
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110 }
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111
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112 return result.release();
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113 }
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114
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115
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116 GrayscaleFrameRenderer::GrayscaleFrameRenderer(const Orthanc::ImageAccessor& frame,
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117 const Deprecated::DicomFrameConverter& converter,
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118 const OrthancStone::CoordinateSystem3D& framePlane,
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119 double pixelSpacingX,
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120 double pixelSpacingY,
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121 bool isFullQuality) :
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122 FrameRenderer(framePlane, pixelSpacingX, pixelSpacingY, isFullQuality),
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123 frame_(Orthanc::Image::Clone(frame)),
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124 defaultWindowCenter_(static_cast<float>(converter.GetDefaultWindowCenter())),
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125 defaultWindowWidth_(static_cast<float>(converter.GetDefaultWindowWidth())),
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126 photometric_(converter.GetPhotometricInterpretation())
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127 {
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128 if (frame_.get() == NULL)
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129 {
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130 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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131 }
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132
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133 converter.ConvertFrameInplace(frame_);
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134 assert(frame_.get() != NULL);
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135
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136 if (frame_->GetFormat() != Orthanc::PixelFormat_Float32)
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137 {
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138 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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139 }
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140 }
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141 }