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  Caricatures of three-dimensional human heads: As we get older do we get more distinct?

O'Toole, A., Vetter, T., Volz, H., & Salter, E. (1997). Caricatures of three-dimensional human heads: As we get older do we get more distinct?. Poster presented at Annual Meeting of the Association for Research in Vision and Ophthalmology (ARVO 1997), Fort Lauderdale, FL, USA.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-EA2C-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-E518-E
Genre: Poster

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 Creators:
O'Toole, AJ, Author              
Vetter, T1, 2, Author              
Volz, H1, 2, Author              
Salter, EM, Author
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Purpose: The aim of this study was to produce facial caricatures of 3D laser scans of human heads, using algorithms that exaggerate the distinctive information in faces. These algorithms operate by comparing a face's "feature" dimensions to those of an average face, and by exaggerating the feature dimensions that are unusual for the face. When applied to the 2D configural features in faces (e.g., distance between eyes, nose length, etc.), this algorithm produces more distinctive versions of the faces. Methods: We applied this algorithm to 60 pointwise-corresponded 3D heads and found, to our surprise, that the most salient effect of the algorithm was to increase the apparent age of the face. Empirically, 10 human observers estimated the ages of the veridical faces, two levels of caricature, and one level of anti-caricature, and we measured the error of these estimates. Results: We found a highly reliable effect of caricature level on age estimate error, with errors ordered from youngest to oldest for all 10 observers as follows: anti-caricatures, veridicals, level one, and level two caricatures. Face age in this last case was overestimated by an average of 20 years. Discussion: Exaggerating the distinctive 3D information in a face increased the apparent age of the face, both at a local level by exaggerating small facial creases into wrinkles, and at a more global level via changes that made the underlying structure of the skull more evident.

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 Dates: 1997-05
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: BibTex Citekey: 417
 Degree: -

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Title: Annual Meeting of the Association for Research in Vision and Ophthalmology (ARVO 1997)
Place of Event: Fort Lauderdale, FL, USA
Start-/End Date: 1997-05-11 - 1997-05-16

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Title: Investigative Ophthalmology and Visual Science
Source Genre: Journal
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Publ. Info: Hagerstown, MD, etc. : Association for Research in Vision and Ophthalmology, etc.
Pages: - Volume / Issue: 38 (4) Sequence Number: 4662 Start / End Page: - Identifier: ISSN: 0146-0404
CoNE: https://pure.mpg.de/cone/journals/resource/110978984074949