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  Towards a Deeper Understanding of View-based Face Recognition

Schuhmacher, S., Schwaninger, A., Wallraven, C., & Bülthoff, H. (2003). Towards a Deeper Understanding of View-based Face Recognition. Poster presented at 6. Tübinger Wahrnehmungskonferenz (TWK 2003), Tübingen, Germany.

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 Creators:
Schuhmacher, S, Author
Schwaninger, A1, 2, Author           
Wallraven, C1, 2, Author           
Bülthoff, HH1, 2, 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: Humans are experts in processing faces, which are encountered in everyday life in many dierent poses and views. In the present study we investigated to what extend the processing
of such highly overlearned stimuli is dependent on viewpoint. The experiments
were modeled after the inter-extra-ortho experiments by Bultho Edelman, 1992,
PNAS, 60-64, who used novel objects as stimuli (wire- and amoebae-like 3D objects).
In Experiment 1, ten face-stimuli were presented in frontal view and 60 side view.
At test they had to be recognized among ten distracter faces at dierent viewpoints.
We found systematic eects of viewpoint (recognition performance: inter > extra >
ortho), which were consistent with recognition schemes based on local view interpolation.
These eects were replicated in Experiment 2, in which frontal and 45 side views
were learned, although recognition performance was less viewpoint-dependent (inter =
extra > ortho). This result is again consistent with recognition schemes based on local
view interpolation. In Experiment 3, the learning condition entailed frontal views and
45 upward views. The motivation for this experiment comes from the fact that in
everyday life, faces are encountered more often in dierent side views than in views
from above and that faces are only vertically symmetric. Indeed, systematic dierences
of viewpoint-dependent performance were found in Experiment 3 when compared to
Experiment 1 and 2 (inter > ortho > extra). The results are discussed within the
framework of a new computational model based on key-frames, which entails local view
interpolation and has been shown to be well-suited to model human face recognition
performance (Wallraven et al., 2002, LNCS vol. 2525, 651-660).

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 Dates: 2003-02
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: SchuhmacherSWB2003
 Degree: -

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Title: 6. Tübinger Wahrnehmungskonferenz (TWK 2003)
Place of Event: Tübingen, Germany
Start-/End Date: 2003-02-21 - 2003-02-23

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Title: 6. Tübinger Wahrnehmungskonferenz: Sixth Perception Conference at Tübingen, TWK 2003
Source Genre: Proceedings
 Creator(s):
Bülthoff, HH1, Editor           
Gegenfurtner, KR, Editor           
Mallot, HA, Editor           
Ulrich, R, Editor
Wichmann, FA1, Editor           
Affiliations:
1 Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794            
Publ. Info: Kirchentellinsfurt, Germany : Knirsch
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 162 Identifier: ISBN: 3-927091-62-6