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Development of the Wits Face Database: an African database of high-resolution facial photographs and multimodal closed-circuit television (CCTV) recordings

Bacci, Nicholas, Davimes, Joshua, Steyn, Maryna, Briers, Nanette·2021·F1000Research
DOI 10.12688/f1000research.50887.1PMC PMC7986986
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Abstract

Forensic facial comparison is a commonly used, yet under-evaluated method employed in medicolegal contexts across the world. Testing the accuracy and reliability of facial comparisons requires large scale controlled and matching facial image databases. Databases that contain images of individuals on closed-circuit television (CCTV), with matching formal and informal photographs are needed for this type of research. Although many databases are available, the majority if not all are developed in order to improve facial recognition and face detection algorithms through machine learning, with very limited if any measure of standardisation. This paper aims to review the available databases and describe the development of a high resolution, standardised facial photograph and CCTV recording database of male Africans. The database is composed of a total of 6220 standardised and uncontrolled suboptimal facial photographs of 622 matching individuals in five different views, as well as corresponding CCTV footage of 334 individuals recorded under different realistic conditions. A detailed description of the composition and acquisition process of the database as well as its subdivisions and possible uses are provided. The challenges and limitations of developing this database are also highlighted, particularly with regard to obtaining CCTV video recordings and ethics for a database of faces. The application process to access the database is also briefly described.

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  • During data transfer, any interruptions or fluctuations in local area network traffic or connectivity would result in data loss or irreparable corruption.

    “During data transfer, any interruptions or fluctuations in local area network traffic or connectivity would result in data loss or irreparable corruption [41].”

    From Forensic Facial Comparison: Current Status, Limitations, and Future Directions (2021) · cites this paper as [41]

    The Challenges and limitations section says that any interruption or fluctuation in local area network speeds or connectivity would result in data loss or corruption during transfer from IP cameras to a central server. It does not say the corruption was irreparable, so that qualifier is unsupported. No page number is provided in our copy. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

  • Approximately 21.2% loss of IP CCTV data and approximately 3.6% loss of analogue CCTV data occurred during the establishment of the Wits Face Database.

    “Our studies [41] found approximately 21.2% loss of IP CCTV data and approximately 3.6% loss of analogue CCTV data during the establishment of the Wits Face Database (Table 1).”

    From Forensic Facial Comparison: Current Status, Limitations, and Future Directions (2021) · cites this paper as [41]

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Research works printed but not linked: 36

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Metadata

Authors
Bacci, N., Davimes, J., Steyn, M., & Briers, N.
ORCID
Venue
F1000Research
Publisher
F1000 Research Ltd
Published
2021-02-19
Volume
10
Pages
131
ISSN
2046-1402
DOI
10.12688/f1000research.50887.1
PMC
PMC7986986
Cited by
7
References
1
Language
en
Licence
creativecommons.org/licenses/by/4.0/ (tdm)
Funders
  • National Research Foundation (11858, CSUR160425163022)
  • J.J.J. Smieszeck Fellowship, School of Anatomical Sciences, University of the Witwatersrand

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