TY - GEN
T1 - Application of fuzzy signal detection theory to the discrimination of morphed tank images
AU - Szalma, J. L.
AU - Oron-Gilad, T.
AU - Saxton, B.
AU - Hancock, P. A.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - The effect of response set size on performance on a detection task was evaluated using both fuzzy and traditional signal detection theory. Fuzzy categories of stimuli were created using morphing software to blend profile images of American (M1A1) and Iraqi (T55) tanks to different degrees. These combinations were used to create static images varying from 100% T55 to 0% T55 (100% MIAl). Participants were asked to indicate the degree to which each image did not resemble an American tank. Consistent with previous research, results indicated that the FSDT model conforms to the normality assumption of traditional SDT. In addition, forcing observers to make binary decisions impaired performance relative to multi-category response sets in the FSDT analysis but not the traditional analysis. However, there were more model convergence failures in the FSDT analysis relative to the traditional analysis, mostly associated with conditions in which there were 100 response categories.
AB - The effect of response set size on performance on a detection task was evaluated using both fuzzy and traditional signal detection theory. Fuzzy categories of stimuli were created using morphing software to blend profile images of American (M1A1) and Iraqi (T55) tanks to different degrees. These combinations were used to create static images varying from 100% T55 to 0% T55 (100% MIAl). Participants were asked to indicate the degree to which each image did not resemble an American tank. Consistent with previous research, results indicated that the FSDT model conforms to the normality assumption of traditional SDT. In addition, forcing observers to make binary decisions impaired performance relative to multi-category response sets in the FSDT analysis but not the traditional analysis. However, there were more model convergence failures in the FSDT analysis relative to the traditional analysis, mostly associated with conditions in which there were 100 response categories.
UR - http://www.scopus.com/inward/record.url?scp=44349150592&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:44349150592
SN - 9780945289296
T3 - Proceedings of the Human Factors and Ergonomics Society
SP - 1716
EP - 1720
BT - Proceedings of the Human Factors and Ergonomics Society 50th Annual Meeting, HFES 2006
T2 - 50th Annual Meeting of the Human Factors and Ergonomics Society, HFES 2006
Y2 - 16 October 2006 through 20 October 2006
ER -