Typical scenario

Close-range capture changes apparent facial proportions

If a report compares a close selfie with a distant camera frame, apparent nose width and ear size may differ because of perspective. Several explanations may be possible, so the specific materials are examined in full, preserving information about their provenance and preparation conditions. The proposition to be tested is defined before comparative assessment of the features.

What needs to be clarified

The task is to assess how the report accounts for perspective distortion, distinguishing observed features from their interpretation. The assessment must consider the suitability of each item and whether the grounds for the proposed conclusion can be checked.

Materials to prepare

  • Complete report with source images and photographic tables
  • Original selfie and full camera recording segment
  • Available camera-position and distance information

What to compare

Check capture distance where documented, usable contours and reasoning about differences; assess whether a perspective-dependent proportion was treated as a stable feature. Every significant feature is linked to a specific part of the material. Similarities and differences are assessed together, considering alternative explanations and the limitations of the examination method.

Possible outcome of the analysis

A possible deliverable is a review of arguments about facial proportions, with verifiable examples and reasons for the assessment. Unresolved questions and additional examinations needed are stated separately, without promising an answer in advance.

Limits of the conclusions

Unknown distance may preclude justified comparison of disputed proportions. Conclusions are confined to the examined items and stated conditions; insufficient features require an explicit finding that the relevant question cannot be resolved.

Facial comparison examination: identifying a person from photographs and video
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