title: Visual assessment of camouflaged targets with different background similarities.
abstract: The study investigated the effectiveness of different camouflage designs using a computational image quality index. Camouflaged human targets were presented on a natural landscape and the targets were designed to be similar to the landscape background with different levels of background similarity as estimated by the image index. The targets were presented in front of the observer (central 0 degrees) or at different angles in the left (-7 degrees, -14 degrees, -21 degrees) or right (+7 degrees, +14 degrees, +21 degrees) visual fields. The observer had to detect the target using peripheral vision if the target appeared in the left and right visual fields. The camouflage effectiveness was assessed by detection hit rates, detection times, and subjective ratings on detection confidence and task difficulty. The study showed that the psychophysical measures correlated well with the image similarity index, suggesting a potentially more efficient camouflage effectiveness assessment tool if the relationship between the psychophysical results and the index can be quantified in the future.
authors: Department of Industrial Management, National Taiwan University of Science and Technology, Taiwan, ROC. D9901005@mail.ntust.edu.tw
authors: Chi-Chan
authors: CC
authors: Chang
authors: Yung-Hui
authors: YH
authors: Lee
authors: Chiuhsiang Joe
authors: CJ
authors: Lin
authors: Bor-Shong
authors: BS
authors: Liu
authors: Yuh-Chuan
authors: YC
authors: Shih
mesh_terms: D000293:Adolescent; D053483:Eye Movement Measurements / Q000295:instrumentation / Q000523:psychology*; D006801:Humans; D008297:Male; D008960:Models, Psychological; D009483:Neuropsychological Tests; D010364:Pattern Recognition, Visual / Q000502:physiology*; D055815:Young Adult