Work Item
ASTM WK74814

New Guide for Image Comparison Conclusions/Opinions

1. Scope

1.1 This guide defines conclusions (hereafter opinions) categories that shall be reached by a practitioner performing comparisons, typically using inductive inference, of people, objects, or scenes depicted in images, regardless of the process by which opinions are reached (that is, the examination methodology). 1.1.1 This guide does not address opinions stated in terms of quantitative probability models, to include numerical assessments of the strength or weight of evidence or the documentation or reporting of opinion (FISWG Forensic Face Note Taking and Reporting, FISWG Investigative Lead Note Taking and Reporting, and SWGDE Technical Overview for Forensic Image Comparison). 1.1.2 This guide does not apply to disciplines that have their own standard opinion scale. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.3 This standard is intended to be used by individuals with discipline specific knowledge, skills, and abilities acquired through education, training, and experience.


conclusion; conclusions; opinion; opinions results


This guide entails the boundaries of the conclusions/opinions that may be reached for image comparisons.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: E30.12

Committee: E30

Staff Manager: Brian Milewski

Work Item Status

Date Initiated: 11-16-2020

Technical Contact: Lora Sims

Item: 001

Ballot: E30.12 (21-02)

Status: Will Reballot Item