Camouflage pattern features interact with movement speed to determine human target detectability
| Autor: | John A. Kirejczyk, Shaina B. Martis, Tad T. Brunyé, Kathryn Rock |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Male
Visual perception Computer science Movement Motion Perception Physical Therapy Sports Therapy and Rehabilitation Human Factors and Ergonomics Military Uniforms Clothing Rendering (computer graphics) Visual processing Young Adult 03 medical and health sciences 0302 clinical medicine Form and function Humans 0501 psychology and cognitive sciences Computer vision Safety Risk Reliability and Quality Engineering (miscellaneous) 050107 human factors business.industry Biological Mimicry 05 social sciences 030210 environmental & occupational health Walking Speed Military Personnel Pattern Recognition Visual Camouflage Visual patterns Female Artificial intelligence Spatial frequency business |
| Zdroj: | Applied Ergonomics. 77:50-57 |
| ISSN: | 0003-6870 |
| DOI: | 10.1016/j.apergo.2019.01.004 |
| Popis: | Applied ergonomics research examines not only the fit, form and function of military uniforms, but also their ability to effectively camouflage personnel as they perform job-related tasks. Many of these job-related tasks involve moving through environments, but existing literature examining camouflage effectiveness often assumes that movement effectively "breaks" even the best camouflage patterns, rendering them of limited utility for reducing the visual signature of a moving target. However, recent research demonstrates that animals equipped with adaptive camouflage change their patterning in predictable ways during movement and this adaptation decreases detectability, suggesting that uniform patterning may still hold value for reducing conspicuity during movement. The present experiment examined whether three visual pattern characteristics, local contrast, orientation, and spatial frequency, would influence the detectability of a moving human target. Participants attempted to detect and localize a simulated human target moving across a background scene, and a factorial design varied target movement speed, and the local contrast, spatial frequency, and orientation of its camouflage patterning. Results showed that target detectability was strongly influenced by target movement rate, pattern local contrast, and pattern spatial frequency, and these effects persisted even under conditions of very fast movement. Importantly, we found that the effect of local contrast was most robust under conditions of movement, suggesting its importance for reducing detectability of moving personnel. We conclude that movement is not always sufficient to break the concealment offered by a pattern with low contrast and a spatial frequency match with its background. Results are discussed in the context of visual processing theories and the application of these findings to the design and development of static and adaptive camouflage patterns for military personnel. |
| Databáze: | OpenAIRE |
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