Develop | Awareness | Professionalism
Develop | Awareness | Professionalism
Facial Comparison
Morphological Comparison | Proportional Comparison
Facial Comparison | Facial Mapping (Morphological)
'Facial Comparison' or sometimes referred to 'Facial Mapping' is a method of comparing two or more photographic images of an individual face with a known or 'Questioned' sample to determine similarities and or differences.
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Facial comparison using 'morphological comparison' techniques to review facial features whereas Facial mapping uses proportional comparison techniques.
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The most common of the two is Facial Comparison as often there will be multiple images (taken from moving video) which will likely be in multiple or varying perspectives.
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The shape and detail of facial features will and do appear different from one perspective to another and therefore using restrictive profile images will reduce the level of comparable detail (such as passport or custody imagery).
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This form of Forensics can be utilised for all sorts of investigations but it relies on relatively good quality imagery for more robust levels of support.
Facial comparison (Proportional)
Proportional facial comparisons are not always possible as it is not often the case that the recording angle of the captured imagery catches the subjects face full on.
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Proportional comparison relies on the facial structure being presented as such that it is not subject to angular variance. One might utilise proportional comparison for the comparison of passport or ID cards against similar perspective imagery of a subject.
This will focus on the position of facial features such as the eyes, nose and mouth as well as the ears and head shape.
It is important to note that weight gain and or loss can change the appearance of the face as well as the effects of ageing.
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Other methods of analysis/comparison such as super-imposition are no longer encouraged as a reliable source of evidence In regard to the face.
Face to Face Consultations
Spectre Solutions firmly believes that face to face consultations are paramount in producing robust comparisons. Primarily these are not always possible but when it is possible we will travel to meet with the client so that we can make a robust assessment of not just their facial features but their general build and height.
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It might not be necessary to use these additional observations, but it all adds to the level of detail we are known for.
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There have been so many times that we have visited with a client to find features such a tattoo or scars that can be compared to the imagery whereas just comparing custody imagery, a single or dual perspective sometimes just does not cut it.
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We always suggest a meeting whether that be in the form of a prison legal visit or a consultation at a firm premises we will make an effort as it makes a notable difference.
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For historical cases we always rely on as much material that is available to conduct our analysis.