ANNEX A PHOTOGRAMMETRIC WORK

The photographs used were N3-GO and N8-GO. These are of different scales. However, if ratios between distances are used, this obviates the need for rescaling. In each case, 10 measurements of distances were made, and the mathematical average was used to minimize measurement errors.

The results

Man A

• Nasion (Top of nose): 0mm = 0%
• Pronasale (nose tip): 6.5 mm = 70.6%
• Stomion (centre mouth): 9.2mm = 100%
• Ears: 7.4 mm = 80.4%
• Interoccular: 8.6mm = 93.4%

Man B

• Nasion: 0mm = 0
• Pronasale: 3.8 mm = 69.1%
• Stomion: 5.5 mm = 100%
• Ears: 4.0mm = 72.7%
• Interoccular: 5.1mm = 92.7%

From these results, it can be seen that within the mathematical tolerances, the two persons are similar in most measurements. The exception is the proportional size of the ears. Although this may tend to cast doubt that Man A and Man B are the same, one difference of this magnitude is insufficient to be sure that they are different.