title: Discriminating isotrigon textures [corrected].
abstract: Higher order spatial correlations can capture edge and object relationships. Isotrigon textures are useful for studying our sensitivity to these correlations. We determined human discrimination performance for 18 isotrigon texture types and compared it with outputs from statistical discriminant models. Some of the models employed versions of the Allan Variance in receptive field outputs. Physiologically plausible mechanisms for such calculations are presented. Two discriminant models emulated human performance well, one based upon a global variance measure, and the other based upon a localised variance with an orientation bias. The 18 texture types were also shown to contain characteristic mini-textures.
authors.affiliation: Centre for Visual Sciences, Research School of Biological Sciences, Australian National University, Canberra ACT 0200, Australia. ted.maddess@anu.edu.au
authors.forename: T
authors.initials: T
authors.lastname: Maddess
authors.forename: Y
authors.initials: Y
authors.lastname: Nagai
mesh_terms: D000328:Adult; D016002:Discriminant Analysis; D004192:Discrimination, Psychological / Q000502:physiology*; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D015233:Models, Statistical; D011336:Probability; D011594:Psychometrics; D012372:ROC Curve; D012680:Sensitivity and Specificity