The most common clues left at a crime scene when a crime is committed are shoeprint impressions. These impressions are useful in the detection of criminals and the linking of crime scenes. We are currently working on a fully automatic system utilising novel fractal pattern matching techniques which allow the investigating officer(s) to match collected impressions against a database of known shoeprint patterns. There is currently no other shoeprint impression database available that offers this facility.
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Anil Alexander (1999) studied this question.