DICOM PS3.14 2019c - Grayscale Standard Display Function

D.3.3 Implementation of the Grayscale Standard Display Function

The measured Characteristic Curve is interpolated for the available DDLs yielding 256 Luminance levels LI,m. The Grayscale Standard Display Function is also interpolated between JNDmin and JNDmax (DJND = [JNDmax - JNDmin]/255) yielding 256 Standard Luminance levels LI,STD.

For every LI,STD, the closest LJ,m is determined. The data pair I,J defines the transformation between Dinput and Doutput (Table D.3-1 and Figure D.3-2) by which the Luminance response of the Display System is made to approximates the Grayscale Standard Display Function.

Transformation for modifying the Characteristic Curve of the printer to a Display Function that approximates the Grayscale Standard Display Function

Figure D.3-2. Transformation for modifying the Characteristic Curve of the printer to a Display Function that approximates the Grayscale Standard Display Function


Table D.3-1. Look-Up Table for Calibrating Reflection Hardcopy System

P-Value

DDL

P-Value

DDL

P-Value

DDL

P-Value

DDL

0

6

1

9

2

12

3

15

4

18

5

20

6

27

7

29

8

30

9

31

10

31

11

32

12

33

13

33

14

34

15

36

16

38

17

40

18

41

19

42

20

43

21

44

22

45

23

59

24

60

25

61

26

62

27

62

28

63

29

63

30

64

31

64

32

65

33

65

34

65

35

66

36

66

37

67

38

67

39

68

40

70

41

74

42

75

43

76

44

78

45

84

46

85

47

86

48

87

49

87

50

88

51

89

52

89

53

91

54

92

55

94

56

95

57

96

58

97

59

97

60

98

61

99

62

99

63

100

64

101

65

102

66

103

67

104

68

105

69

106

70

107

71

108

72

109

73

110

74

112

75

114

76

116

77

118

78

119

79

120

80

121

81

122

82

122

83

123

84

123

85

124

86

125

87

125

88

126

89

126

90

127

91

127

92

128

93

129

94

130

95

131

96

133

97

134

98

135

99

136

100

136

101

137

102

138

103

138

104

139

105

139

106

140

107

141

108

143

109

145

110

147

111

148

112

149

113

150

114

151

115

152

116

153

117

154

118

154

119

155

120

156

121

156

122

157

123

158

124

159

125

160

126

160

127

162

128

163

129

164

130

165

131

166

132

167

133

168

134

169

135

170

136

170

137

171

138

172

139

172

140

173

141

174

142

175

143

175

144

176

145

177

146

178

147

179

148

179

149

180

150

181

151

182

152

182

153

183

154

184

155

184

156

185

157

186

158

186

159

187

160

187

161

188

162

188

163

189

164

189

165

190

166

190

167

190

168

191

169

191

170

192

171

192

172

192

173

193

174

194

175

194

176

195

177

195

178

196

179

197

180

198

181

199

182

199

183

200

184

200

185

201

186

202

187

202

188

203

189

203

190

204

191

204

192

205

193

205

194

206

195

207

196

207

197

208

198

209

199

210

200

211

201

212

202

213

203

214

204

214

205

215

206

216

207

216

208

217

209

218

210

219

211

219

212

220

213

220

214

221

215

222

216

222

217

223

218

223

219

224

220

224

221

225

222

226

223

226

224

227

225

228

226

228

227

230

228

231

229

232

230

234

231

235

232

236

233

238

234

238

235

239

236

240

237

241

238

242

239

242

240

243

241

244

242

245

243

246

244

247

245

248

246

249

247

250

248

250

249

251

250

251

251

252

252

252

253

253

254

253

255

254


DICOM PS3.14 2019c - Grayscale Standard Display Function