Development of Multimodal Biometric Systems with Three-Way and Fuzzy Set-Based Decision Mechanisms

Rami Al-Hmouz*, Witold Pedrycz, Khaled Daqrouq, Ali Morfeq

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Owing to well-documented advantages, multimodal biometrics systems form one of the visible and promising trends in the development of biometric systems. The results produced by the multimodal biometric system come as the aggregation of results produced by individual modalities encountered in the problem. In verification systems involving a single modality, a threshold has to be identified to separate the yes–no regions of the biometrics decision. However, in multimodal verification, there are four regions separated by two thresholds. In this paper, we introduce a concept of three-valued logic in a multimodal verification system in which four thresholds and nine regions have to be identified. The thresholds (regions) are optimized for a given number of parameters. Different structures of multimodal biometrics are tested for synthetic and publicly available datasets.

Original languageEnglish
Pages (from-to)128-140
Number of pages13
JournalInternational Journal of Fuzzy Systems
Issue number1
Publication statusPublished - Jan 1 2018


  • Fuzzy decision
  • Multimodal biometrics
  • Three-valued logic

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Software
  • Computational Theory and Mathematics
  • Artificial Intelligence


Dive into the research topics of 'Development of Multimodal Biometric Systems with Three-Way and Fuzzy Set-Based Decision Mechanisms'. Together they form a unique fingerprint.

Cite this