Dual Color and Shape Coding in the Visual Periphery: A Study of Joint Tactical Information Distribution System (JTIDS) Symbology
Abstract
This research looked at four different dual color and shape coded Joint Tactical Information Distribution System (JTIDS) symbols on a color CRT located in the subject's periphery. Nighttime cockpit conditions were simulated. No subject could detect the 0.5 symbols in their periphery beyond 15. Approximately 1/3 of the potential subject pool could not correctly identify symbol shape even at the lower end of the range under study: 5. Subjects used only color to key in on the symbol's meaning; the symbol's shape did not matter at all during this recognition task, for symbol shape was harder to perceive than color in the periphery. Color and the symbol's meaning could both be perceived at approximately 12 off of the fovea, while shape had to be at 8 deg before subjects could perceive it. It is recommended that additional research in this area be accomplished. If findings are confirmed, it is suggested that a careful examination of the JTIDS dual coding be undertaken.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1991
- Accession Number
- ADA243253
Entities
People
- Eileen Ancman
Organizations
- Wright Laboratory