Welcome to Tread Forensics

/Tread Forensics is a website dedicated to providing footwear and tire resources to the forensic community. The site went live in April 2017 and was created to perpetuate the online resources available at SWGTREAD.org.

The Scientific Working Group for Shoeprint and Tire Tread Evidence (SWGTREAD) was created in 2004 by the FBI Laboratory to standardize and advance the forensic analysis of footwear and tire impression evidence. The first meeting took place in September 2004 and the last in March 2013. From 2004 to 2013, the working group was co-funded by the FBI and the National Institute of Justice (NIJ). However, In October 2014, the Footwear and Tire Subcommittee of the National Institute for Standards and Technology (NIST) Organization of Scientific Area Committees (OSAC) was created. At that point, SWGTREAD decided to discontinue its operations and focus its efforts on supporting the subcommittee; however, the OSAC subcommittee identified the latest versions of the SWGTREAD standards as the baseline documents that best reflect the current state of the practice of forensic footwear and tire analysis and thus re-published them on the subcommittee's website.

Digital imaging processes have become widely used in the latent print community. Adobe Photoshop and other imaging programs (e.g., those provided by Mideo Systems Inc.) have built-in enhancement tools that examiners can apply to images. However, information about how these tools work can be elusive because of the developers’ proprietary rights. This paper addresses which of the more common enhancement tools alter the data in the image and which ones do not.

Upcoming Events

Technical Colloquium on the Weight of Evidence
June 27-29, 2017
NIST, Gaithersburg, MD


2017 International Forensic Science Error Management Symposium
July 24–28, 2017
NIST, Gaithersburg, MD
Registration opened March 31


IAI Educational Conference
August 7–11, 2017
Atlanta, Georgia
Registration open


10th International Conference on Forensic Inference and Statistics
September 5–8, 2017
University of St. Thomas, Minneapolis, MN
Registration open