Title
Conspicuity and identifiability: efficient calibration tools for synthetic imagery
Author
TNO Technische Menskunde
Toet, A.
Hogervorst, M.A.
Bijl, P.
Contributor
Watkins, W.R. (editor)
Clement, D. (editor)
Reynolds, W.R. (editor)
Publication year
2004
Abstract
We argue that visual conspicuity and identifiability are two efficient task-related measures that can be deployed to calibrate synthetic imagery that is intended to be used for human visual search and detection tasks. The conspicuity of a target is operationally defined as the region around the center of the visual field where the target is capable to attract visual attention. Visual conspicuity predicts human visual search performance in realistic and military relevant complex scenario's. Conspicuity can easily and quickly be measured either in the field (in complex environments) or in the lab. This eliminates the need for costly and time consuming visual search experiments. The agreement between field and lab measurements implies that conspicuity can be used to validate synthetic imagery. Target identifiability is operationally defined as the amount of Gaussian blur that is required to reduce the target signature to its identification threshold. It is an efficient metric that can be used to gain insight into human identification performance without having to resort to elaborate and costly experiments. Identifiability is directly related to PID-performance, and is therefore well suited forcomparing synthetic and realistic imagery. We conclude that synthetic imagery can be calibrated for human visual search and detection tasks by setting the conspicuity and identifiability of targets equal to those of their real world counterparts.
Subject
Conspicuity
Human perception
Identifiability
Simulation
Synthetic imagery
Validation
Approximation theory
Computational methods
Computer simulation
Mathematical models
Military applications
Probability
Sensory perception
Identifiability
Synthetic imagery
Validation
Vision
identifiability
Synthetic imagery
Military
To reference this document use:
http://resolver.tudelft.nl/uuid:9091c6bd-9a3a-4d30-b85f-cc8462d244af
DOI
https://doi.org/10.1117/12.539118
TNO identifier
13202
Publisher
SPIE
Source
Targets and Backgrounds X: Characterization and Representation, 12 April 2004 through 13 April 2004, Orlando, FL, Conference The International Society for Optical Engineering. (SPIE)), 5431 (5431)
Document type
conference paper