Soft Computing

, Volume 14, Issue 1, pp 81–90

Evolving the memory of a criminal’s face: methods to search a face space more effectively

  • Charlie Frowd
  • Vicki Bruce
  • Melanie Pitchford
  • Carol Gannon
  • Mark Robinson
  • Colin Tredoux
  • Jo Park
  • Alex Mcintyre
  • Peter J. B. Hancock
Original Paper

DOI: 10.1007/s00500-008-0391-z

Cite this article as:
Frowd, C., Bruce, V., Pitchford, M. et al. Soft Comput (2010) 14: 81. doi:10.1007/s00500-008-0391-z

Abstract

Witnesses and victims of serious crime are often required to construct a facial composite from their memory, a visual likeness of a suspect’s face. The traditional method is for them to select individual facial features to build a face, but often these images are of poor quality. We have developed a new method whereby witnesses repeatedly select instances from an array of complete faces and a composite is evolved over time by searching a face model built using Principal Components Analysis. While past research suggests that the new approach is superior, performance is far from ideal. In the current research, face models are built which match a witness’s description of a target. It is found that such ‘tailored’ models promote better quality composites, presumably due to a more effective search, and also that smaller models may be even better. The work has implications for researchers who are using statistical modelling techniques for recognising faces.

Keywords

Face generation Evolution Face perception PCA Genetic algorithms 

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Charlie Frowd
    • 1
  • Vicki Bruce
    • 2
  • Melanie Pitchford
    • 1
  • Carol Gannon
    • 1
  • Mark Robinson
    • 3
  • Colin Tredoux
    • 4
  • Jo Park
    • 3
  • Alex Mcintyre
    • 3
  • Peter J. B. Hancock
    • 3
  1. 1.School of PsychologyUniversity of Central LancashirePrestonUK
  2. 2.School of PsychologyNewcastle UniversityNewcastleUK
  3. 3.Department of PsychologyUniversity of StirlingStirlingUK
  4. 4.Department of PsychologyUniversity of Cape TownCape TownSouth Africa

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