Foreword
Introduction
1 Scope
2 Terms and definitions
3 Two-step psychophysical method
4 Experimental procedure
4.1 Step 1
4.2 Step 2
Annex A (informative) Comparison between a paired
comparison and a triplet comparison
technique
Annex B (informative) Number of sample combinations for
triplet comparison
Annex C (informative) Standard portrait images
Annex D (informative) Performance of the triplet comparison
method
Annex E (informative) Scheffe's method
Annex F (informative) Conversion of Scheffe's scale to JND
Bibliography