What a review checks
- image suitability for identification;
- sufficiency of comparison materials;
- completeness of the description of appearance features;
- substantiation of similarities and differences;
- the logic of the conclusion;
- the presence of contradictions;
- exceeding the limits of specialist knowledge.
Check the original images
A review must consider which files and frames were actually examined, whether their source is known and whether prior enhancement took place. Cropping, forwarding and automatic processing may alter the available features. This limitation cannot be removed by referring to the number of photographs.
Compare observation conditions
Conclusions about differences or similarities must take account of viewing angle, lighting, perspective, facial expression and quality. An isolated difference in proportions between non-comparable images is not in itself sufficient grounds for a categorical answer.
- Is the selection of video frames explained?
- Can the illustrations be linked to the original files?
- Are appearance features distinguished from image artefacts?
- Does the certainty of the conclusion match the material's suitability?
It is useful to link a comment to a specific observation and its significance for the result. A reviewer must not present a new visual impression as a full repeat examination without the necessary source data.
On this subject: Why image quality and viewing angle matter more than the number of photographs.