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Using the Smooth Receiver Operating Curve (ROC) Method for Evaluation and Decision Making in Biometric Systems

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Technical Report

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Canadian Border Services Agency Ottawa, Ontario Canada

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This report presents the use of the smooth ROC method for evaluation of biometric systems, which can be used in developing decision making rules for face recognition triaging. From a performance evaluation perspective, the problem can be decomposed into two subproblems the first deals with detecting the presence or absence of a specified person of interest POI in a given video frame, and the second measures the strength of matching between the POI image and the face found in the video frame. The former can be viewed as a binary decision of detecting or the lack thereof, and the latter is based on a score that depicts the strength of matching. Ideally, the objective of the system is to measure the agreement between higher matching scores with the presence of POI in the video frame based on the assumption that a higher matching score corresponds to a higher likelihood of the POI being present in the frame. The accumulation of this performance information across the stream of video frames will yield information required for performance assessment analysis of the system as a whole.

Subject Categories:

  • Biomedical Instrumentation and Bioengineering
  • Cybernetics
  • Photography

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