Accession Number : AD0707441

Title :   EFFECTS OF IMAGE INCONGRUENCE ON LOCATION OF COMMON TERRAIN IN COMPARATIVE COVER,

Corporate Author : SYSTEM DEVELOPMENT CORP FALLS CHURCH VA

Personal Author(s) : Epstein,Sidney

Report Date : FEB 1970

Pagination or Media Count : 33

Abstract : The study was designed to determine the effects of differences in photo scale and orientation of early and late cover and of variation in percent of overlap on inventive error, completeness, and speed with which image interpreters identify the comparative cover photographs and confidence in reports. Personnel of the System Development Corporation and of the INTERPRETER TECHNIQUES Work Unit (BESRL) conducted an experiment in which 96 trained image interpreters were given the task of locating, on rolls of new photographic cover (late cover), frames depicting the same terrain as that presented in the early cover. There were 12 experimental conditions involving 2 levels of difference in photo scale (1:1 and 1:2), 3 levels of variation in orientation (identical or 0, 30, and 180 degrees) and 2 levels of percent of overlap (100% and 50%). A Graeco-Latin square counterbalanced arrangement was employed in presenting the subjects (24 groups of 4 interpreters each) with the search rolls and the early cover frame. Interpreter performance was measured in terms of the following criteria: Time--number of seconds to locate the relevant late cover frame, Frame Location Completeness--percent of relevant search roll frames correctly selected, Inventive Errors--number of frames incorrectly selected, and Confidence--expression of self-confidence in responses rated on a 3-step scale. (Author)

Descriptors :   (*AERIAL RECONNAISSANCE, TERRAIN INTELLIGENCE), (*PHOTOINTERPRETATION, PERFORMANCE(HUMAN)), PHOTOGRAPHIC INTELLIGENCE, PHOTOINTERPRETABILITY, DETECTION, VISUAL ACUITY, ANALYSIS OF VARIANCE, TIME STUDIES, TEST METHODS

Subject Categories : Personnel Management and Labor Relations
      Photography
      Military Operations, Strategy and Tactics

Distribution Statement : APPROVED FOR PUBLIC RELEASE