Typical scenario

A facial-comparison report treats obscured features as differences

If a report compares a frontal photograph with a frame partly covered by a hood, an unseen feature may be recorded as a difference. Review must establish whether that feature is visible in both images and whether its shape can be assessed.

What needs to be clarified

Review feature selection, treatment of obscured regions, links between illustrations and reasoning, and the report’s account of limitations.

Materials to prepare

  • Complete report with examination section and image plates
  • Original comparison-image files without further compression
  • Surrounding video sequence, if available

What to compare

Check images against report attachments, visibility and the covering object’s position. Separate observed differences from non-visibility and uncertain detail. Check recurrence in neighbouring frames and whether lighting, sharpness and viewpoint effects are explained for each significant argument.

Possible outcome of the analysis

The review may identify supported and unsupported arguments, illustration-traceability problems and further research questions, explaining their effect on the report’s reasoning.

Limits of the conclusions

An unseen feature is not an absent feature. Review does not replace a new identification examination; obscured or low-detail images may prevent an identity conclusion.

Facial comparison examination: identifying a person from photographs and video
Write to usDiscuss your task ↗