annotate Framework/Radiography/RadiographyAlphaLayer.cpp @ 871:4bc8d9609447

Added support for measuring tool edition in TrackerSampleApp
author Benjamin Golinvaux <bgo@osimis.io>
date Tue, 25 Jun 2019 18:17:33 +0200
parents 42dadae61fa9
children a5f2a6b04a31
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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) 2017-2018 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 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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20
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21
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22 #include "RadiographyAlphaLayer.h"
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23
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24 #include "RadiographyScene.h"
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25
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26 #include <Core/Images/Image.h>
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27 #include <Core/OrthancException.h>
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28
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29 namespace OrthancStone
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30 {
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31
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32 void RadiographyAlphaLayer::SetAlpha(Orthanc::ImageAccessor* image)
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33 {
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34 std::auto_ptr<Orthanc::ImageAccessor> raii(image);
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35
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36 if (image == NULL)
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37 {
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38 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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39 }
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40
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41 if (image->GetFormat() != Orthanc::PixelFormat_Grayscale8)
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42 {
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43 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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44 }
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45
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46 SetSize(image->GetWidth(), image->GetHeight());
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47 alpha_ = raii;
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48
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49 BroadcastMessage(RadiographyLayer::LayerEditedMessage(*this));
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50 }
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51
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52 void RadiographyAlphaLayer::Render(Orthanc::ImageAccessor& buffer,
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53 const AffineTransform2D& viewTransform,
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54 ImageInterpolation interpolation) const
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55 {
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56 if (alpha_.get() == NULL)
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57 {
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58 return;
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59 }
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60
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61 if (buffer.GetFormat() != Orthanc::PixelFormat_Float32)
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62 {
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63 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
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64 }
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65
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66 unsigned int cropX, cropY, cropWidth, cropHeight;
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67 GetCrop(cropX, cropY, cropWidth, cropHeight);
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68
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69 const AffineTransform2D t = AffineTransform2D::Combine(
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70 viewTransform, GetTransform(),
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71 AffineTransform2D::CreateOffset(cropX, cropY));
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72
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73 Orthanc::ImageAccessor cropped;
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74 alpha_->GetRegion(cropped, cropX, cropY, cropWidth, cropHeight);
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75
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76 Orthanc::Image tmp(Orthanc::PixelFormat_Grayscale8, buffer.GetWidth(), buffer.GetHeight(), false);
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77
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78 t.Apply(tmp, cropped, interpolation, true /* clear */);
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79
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80 // Blit
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81 const unsigned int width = buffer.GetWidth();
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82 const unsigned int height = buffer.GetHeight();
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83
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84 float value = foreground_;
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85
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86 if (useWindowing_)
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87 {
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88 float center, width;
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89 if (GetScene().GetWindowing(center, width))
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90 {
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91 value = center + width / 2.0f; // set it to the maximum pixel value of the image
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92 }
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93 }
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94
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95 for (unsigned int y = 0; y < height; y++)
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96 {
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97 float *q = reinterpret_cast<float*>(buffer.GetRow(y));
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98 const uint8_t *p = reinterpret_cast<uint8_t*>(tmp.GetRow(y));
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99
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100 for (unsigned int x = 0; x < width; x++, p++, q++)
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101 {
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102 float a = static_cast<float>(*p) / 255.0f;
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103
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104 *q = (a * value + (1.0f - a) * (*q));
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105 }
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106 }
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107 }
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108
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109 bool RadiographyAlphaLayer::GetRange(float& minValue,
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110 float& maxValue) const
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111 {
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112 if (useWindowing_)
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113 {
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114 return false;
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115 }
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116 else
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117 {
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118 minValue = 0;
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119 maxValue = 0;
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120
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121 if (foreground_ < 0)
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122 {
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123 minValue = foreground_;
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124 }
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125
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126 if (foreground_ > 0)
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127 {
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128 maxValue = foreground_;
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129 }
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130
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131 return true;
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132 }
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133 }
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134 }