Bottom line is that it's nearly impossible to exactly match facial features to anyone beyond a set distance when there's too much ambiguity between distances an

Bottom line is that it's nearly impossible to exactly match facial features to anyone beyond a set distance when there's too much ambiguity between distances and rubbish quality CCTV video. Matching gait may be a more effective means of identification at a distance (and, in this and many other cases, at odd angles). http://www.am.sanken.osaka-u.ac.jp/~sagawa/pdf/accv06.pdf http://www.am.sanken.osaka-u.ac.jp/~sagawa/pdf/accv06.pdf (PDF)