Accession Number:

ADA243253

Title:

Dual Color and Shape Coding in the Visual Periphery: A Study of Joint Tactical Information Distribution System (JTIDS) Symbology

Descriptive Note:

Final rept. Mar-Jul 91,

Corporate Author:

WRIGHT LAB WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1991-08-01

Pagination or Media Count:

23.0

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 subjects periphery. Nighttime cockpit conditions were simulated. No subject could detect the 0.5 symbols in their periphery beyond 15. Approximately 13 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 symbols meaning the symbols 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 symbols 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.

Subject Categories:

  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE