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  Using threat image projection data for assessing individual screener performance

Hofer, F., & Schwaninger, A. (2005). Using threat image projection data for assessing individual screener performance. In A. Brebbia, T. Bucciarelli, F. Garzia, & M. Guarascio (Eds.), Safety and Security Engineering (pp. 417-426). Southampton, UK: WIT Press.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-D6FB-F Version Permalink: https://hdl.handle.net/21.11116/0000-0005-3ACA-7
Genre: Conference Paper

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https://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/82/15153 (Publisher version)
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 Creators:
Hofer, F, Author
Schwaninger, A1, Author           
Affiliations:
1External Organizations, ou_persistent22              

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 Abstract: Threat image projection (TIP) is a technology of current x-ray machines that allows exposing screeners to artificial but realistic x-ray images during the routine baggage x-ray screening operation. If a screener does not detect a TIP within a specified amount of time, a feedback message appears indicating that a projected image was missed. Feedback messages are also shown when a TIP image is detected or in the case of a non-TIP alarm, i.e. when the screener indicated that there was threat but in fact no TIP was shown. TIP data is an interesting source for quality control, risk analysis and assessment of individual screener performance. In two studies we examined the conditions for using TIP data for the latter purpose. Our results strongly suggest using aggregated data in order to have a large enough data sample as the basis for statistical analysis. Second, an appropriate TIP library containing a large number of threat items, which are representative for the prohibited items to be detected is recommended. Fu
rthermore, consideration should be given to image-based factors such as general threat item difficulty, viewpoint difficulty, superposition and bag complexity. Different methods to cope with these issues are discussed in order to achieve reliable, valid and standardized measurements of individual screener performance using TIP.

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 Dates: 2005
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.2495/SAFE050411
BibTex Citekey: 3868
 Degree: -

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Title: First International Conference on Safety and Security Engineering (SAFE 2005)
Place of Event: Roma, Italy
Start-/End Date: 2003-09-23 - 2003-09-26

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Title: Safety and Security Engineering
Source Genre: Proceedings
 Creator(s):
Brebbia, AC, Editor
Bucciarelli, T, Editor
Garzia, F, Editor
Guarascio, M, Editor
Affiliations:
-
Publ. Info: Southampton, UK : WIT Press
Pages: 919 Volume / Issue: - Sequence Number: - Start / End Page: 417 - 426 Identifier: -

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Title: WIT Transactions on The Built Environment
Source Genre: Series
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Pages: - Volume / Issue: 82 Sequence Number: - Start / End Page: - Identifier: -