/usr/include/gdcm-2.4/gdcmSurfaceHelper.h is in libgdcm2-dev 2.4.4-3+deb8u1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 | /*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#ifndef GDCMSURFACEHELPER_H
#define GDCMSURFACEHELPER_H
#include "gdcmTypes.h" // for GDCM_EXPORT
#include <vector>
#include <iostream>
namespace gdcm
{
/**
* \brief SurfaceHelper
* Helper class for Surface object
*/
class GDCM_EXPORT SurfaceHelper
{
public:
typedef std::vector< unsigned short > ColorArray;
/**
* \brief Convert a RGB color into DICOM grayscale (ready to write).
*
* \see PS 3.3 C.27.1 tag(0062,000C)
*
* \param RGB RGB array.
* \param rangeMax Max value of the RGB range.
*
* \tparam T Type of RGB components.
* \tparam U Type of rangeMax value.
*/
template <typename T, typename U>
static unsigned short RGBToRecommendedDisplayGrayscale(const std::vector<T> & RGB,
const U rangeMax = 255);
/**
* \brief Convert a RGB color into DICOM CIE-Lab (ready to write).
*
* \see PS 3.3 C.10.7.1.1
*
* \param RGB RGB array.
* \param rangeMax Max value of the RGB range.
*
* \tparam T Type of RGB components.
* \tparam U Type of rangeMax value.
*/
template <typename T, typename U>
static ColorArray RGBToRecommendedDisplayCIELab(const std::vector<T> & RGB,
const U rangeMax = 255);
/**
* \brief Convert a DICOM CIE-Lab (after reading) color into RGB.
*
* \see PS 3.3 C.10.7.1.1
*
* \param CIELab DICOM CIE-Lab array.
* \param rangeMax Max value of the RGB range.
*
* \tparam T Type of CIELab components.
* \tparam U Type of rangeMax value.
*/
template <typename T, typename U>
static std::vector<T> RecommendedDisplayCIELabToRGB(const ColorArray & CIELab,
const U rangeMax = 255);
/**
* \brief Convert a DICOM CIE-Lab (after reading) color into RGB.
*
* \see PS 3.3 C.10.7.1.1
*
* \param CIELab DICOM CIE-Lab array.
* \param rangeMax Max value of the RGB range.
*
* \tparam U Type of rangeMax value.
*/
template <typename U>
static std::vector<float> RecommendedDisplayCIELabToRGB(const ColorArray & CIELab,
const U rangeMax = 255);
private:
static std::vector< float > RGBToXYZ(const std::vector<float> & RGB);
static std::vector< float > XYZToRGB(const std::vector<float> & XYZ);
static std::vector< float > XYZToCIELab(const std::vector<float> & XYZ);
static std::vector< float > CIELabToXYZ(const std::vector<float> & CIELab);
};
template <typename T, typename U>
unsigned short SurfaceHelper::RGBToRecommendedDisplayGrayscale(const std::vector<T> & RGB,
const U rangeMax/* = 255*/)
{
assert(RGB.size() > 2);
unsigned short Grayscale = 0;
const float inverseRangeMax = 1. / (float) rangeMax;
// 0xFFFF "=" 255 "=" white
Grayscale = (unsigned short) ((0.2989 * RGB[0] + 0.5870 * RGB[1] + 0.1140 * RGB[2])
* inverseRangeMax // Convert to range 0-1
* 0xFFFF); // Convert to range 0x0000-0xFFFF
return Grayscale;
}
template <typename T, typename U>
SurfaceHelper::ColorArray SurfaceHelper::RGBToRecommendedDisplayCIELab(const std::vector<T> & RGB,
const U rangeMax/* = 255*/)
{
assert(RGB.size() > 2);
ColorArray CIELab(3);
std::vector<float> tmp(3);
// Convert to range 0-1
const float inverseRangeMax = 1. / (float) rangeMax;
tmp[0] = (float) (RGB[0] * inverseRangeMax);
tmp[1] = (float) (RGB[1] * inverseRangeMax);
tmp[2] = (float) (RGB[2] * inverseRangeMax);
tmp = SurfaceHelper::XYZToCIELab( SurfaceHelper::RGBToXYZ( tmp ) );
// Convert to range 0x0000-0xFFFF
// 0xFFFF "=" 127, 0x8080 "=" 0, 0x0000 "=" -128
CIELab[0] = (unsigned short) ( 0xFFFF * (tmp[0]*0.01));
if(tmp[1] >= -128 && tmp[1] <= 0)
{
CIELab[1] = (unsigned short)(((float)(0x8080)/128.0)*tmp[1] + ((float)0x8080));
}
else if(tmp[1] <= 127 && tmp[1] > 0)
{
CIELab[1] = (unsigned short)(((float)(0xFFFF - 0x8080)/127.0)*tmp[1] + (float)(0x8080));
}
if(tmp[2] >= -128 && tmp[2] <= 0)
{
CIELab[2] = (unsigned short)(((float)0x8080/128.0)*tmp[2] + ((float)0x8080));
}
else if(tmp[2] <= 127 && tmp[2] > 0)
{
CIELab[2] = (unsigned short)(((float)(0xFFFF - 0x8080)/127.0)*tmp[2] + (float)(0x8080));
}
return CIELab;
}
template <typename T, typename U>
std::vector<T> SurfaceHelper::RecommendedDisplayCIELabToRGB(const ColorArray & CIELab,
const U rangeMax/* = 255*/)
{
assert(CIELab.size() > 2);
std::vector<T> RGB(3);
std::vector<float> tmp(3);
// Convert to range 0-1
tmp[0] = 100.0*CIELab[0] /(float)(0xFFFF);
if(CIELab[1] >= 0x0000 && CIELab[1] <= 0x8080)
{
tmp[1] = (float)(((CIELab[1] - 0x8080) * 128.0)/(float)0x8080);
}
else if(CIELab[1] <= 0xFFFF && CIELab[1] > 0x8080)
{
tmp[1] = (float)((CIELab[1]-0x8080)*127.0 / (float)(0xFFFF - 0x8080));
}
if(CIELab[2] >= 0x0000 && CIELab[2] <= 0x8080)
{
tmp[2] = (float)(((CIELab[2] - 0x8080) * 128.0)/(float)0x8080);
}
else if(CIELab[2] <= 0xFFFF && CIELab[2] > 0x8080)
{
tmp[2] = (float)((CIELab[2]-0x8080)*127.0 / (float)(0XFFFF - 0x8080));
}
tmp = SurfaceHelper::XYZToRGB( SurfaceHelper::CIELabToXYZ( tmp ) );
// Convert to range 0-rangeMax
RGB[0] = (T) (tmp[0] * rangeMax);
RGB[1] = (T) (tmp[1] * rangeMax);
RGB[2] = (T) (tmp[2] * rangeMax);
return RGB;
}
template <typename U>
std::vector<float> SurfaceHelper::RecommendedDisplayCIELabToRGB(const ColorArray & CIELab,
const U rangeMax/* = 255*/)
{
return RecommendedDisplayCIELabToRGB<float>(CIELab, rangeMax);
}
} // end namespace gdcm
#endif // GDCMSURFACEHELPER_H
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