GYRO in Photoshop

In recent years the NAS Report, the PCAST report, and the AAAS Report have all made calls to increase the documentation that latent print examiners record during their examinations. In 2011 Glenn Langenburg published an article on GYRO, a more transparent system to document features and assist examiners in evaluating the sufficiency of features for a decision. While an increasing number of examiners are conducting on-screen comparisons, implementation of the GYRO has been slow, particularly because increased documentation increases comparison time. GYRO in Photoshop introduces examiners to the use of GYRO within the Photoshop program and to tools that will both increase the level of documentation and decrease comparison time. The class also covers how GYRO documentation can assist in reaching sufficiency decisions and in resolving conflicts during the verification stage.

Contact Eric Ray to bring this training course to your agency.

Course Objectives:

  • Define the meaning and weight of an exclusion
  • Define the benefits of the GYRO system
  • Practice GYRO with custom Photoshop actions
  • Calibrate your use of colors in minutiae markup
  • Perform complex searching tasks in Photoshop
  • Gain greater efficiency in Analysis and Comparison
  • Understand how GYRO aids during Evaluation
  • Resolve conflicts using the GYRO system
  • Complete challenging practical comparisons


  • Eric Ray has been a Forensic Scientist in the Latent Print field since 2007 and is a Certified Latent Print Examiner. He earned a BS in Biochemistry and Molecular & Cellular Biology from the University of Arizona. As a member of the IAI, Eric is on the Editorial Board of the JFI. Eric has chaired the IAI Special Committee on Latent Print Probability Modeling and was a member of the OSAC Friction Ridge Subcommittee. Eric has published and presented extensively on Reducing Erroneous Exclusions. In his spare time he also co-hosts the Double Loop Podcast, an online program on fingerprint topics.

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