...Scenes
Research funded by EPSRC Grant GR/K44657 and an EPSRC/BBC CASE Studentship
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...regions 
A single connected region may not be sufficient because of certain binary properties of faces such as the presence or absence of glasses.
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...people
Several simplifications have been made here for illustrative purposes. Firstly, the identities are likely to overlap significantly. Secondly, the space has high dimensionality and visualisation in two dimensions would in fact reveal little or no structure. Thirdly, each identity has been shown as a single connected region whereas several such regions may be required in reality.
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...unique
This fact was pointed out by Bishop [ 2 ] in the context of neural network validation.
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Shaogang Gong
Fri Jul 11 10:14:24 BST 1997