The current US Army target acquisition models have a dependence on magnification. This is due in part to the structure of the observer Contrast Threshold Function (CTF) used in the model. Given the shape of the CTF, both over-magnification and under-magnification can dramatically impact modeled performance. This paper presents the results from two different perception studies, one using degraded imagery and the other using field imagery. The results presented demonstrate the correlation between observer performance and model prediction and provide guidance accurately representing system performance in under and over-magnified cases.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.