A longitudinal study of 160 shoes. Shoes were Nike Winflo 4 or Adidas Seeley, and were worn for approximately 6 months, with data collected initially and during 4 check-in periods.
The baseline collection procedures were used in the collection of initial data about the unworn shoes and the study participants as well as during the study. The baseline procedure documents the collection procedures; a separate document describes changes made to these procedures during the study to improve image quality and reduce equipment malfunctions.
In addition, single-procedure files are provided for each collection method:
- Tekscan Mat Scanner
- 2d Digital Scanner (EverOS Everspry)
- Digital Camera
- Film/Powder Prints (Creation of prints using adhesive film and fingerprint powder)
- Paper Print/Vinyl Prints (Creation of prints using fingerprint powder and paper or vinyl planks)
- Scanner Procedure - paper and film prints
- Photography Procedure - Vinyl prints
- 3d Digital Scanner
(Stationary)
- for the EinScan Pro+ 3D Scanner with a turntable
- 3d Digital Scanner (Handheld)
At the conclusion of the longitudinal study, we decided to create prints similar to those which may be found at a crime scene with some of the worn shoes.