Accession Number : AD0718382

Title :   Target Acquisition Studies: (1) Two Dimensional Compared with Three Dimensional Targets. (2) Changes in Gamma for TV Displayed Targets.

Descriptive Note : Final rept. 1 Jan-31 Dec 70,

Corporate Author : MARTIN MARIETTA CORP ORLANDO FLA

Personal Author(s) : Fowler,Frank D. ; Freitag,Melvin ; Jones,Daniel B. ; King,Barry

Report Date : JAN 1971

Pagination or Media Count : 50

Abstract : The study had two major objectives: the first was to determine whether the detection and recognition of 2 D targets are significantly different from the detection and recognition of 3D targets when target acquisition is performed using direct unaided vision and when utilizing a TV display. The second objective was to determine how differences in TV system transfer characteristics (gamma or dynamic gray scale) affect target detection and recognition capability. Trained pilots detected and recognized targets under simulated flight conditions utilizing both 2D and 3D targets with both the unaided eye and with the aid of a closed circuit TV system. Slant ranges and visual angle requirements were determined for the conditions tested. A second series of tests was run to determine the effect of changes in gamma (the gray scale transfer characteristic), on target detection and recognition capability with a TV sensor. Six trained pilots performed simulated targets detection and recognition tasks under three gamma levels. Slant ranges and visual angle requirements were determined for the conditions. (Author)

Descriptors :   (*TARGET RECOGNITION, *TELEVISION DISPLAY SYSTEMS), (*PILOTS, VISUAL ACUITY), (*TACTICAL AIR SUPPORT, TARGET RECOGNITION), SURFACE TARGETS, CORRELATION TECHNIQUES, TELEVISION DISPLAY SYSTEMS, PILOTS, FLIGHT SIMULATORS, NAVAL RESEARCH, PERFORMANCE(HUMAN)

Subject Categories : Anatomy and Physiology
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE