The role of sequence order in determining view canonicality for novel wire-frame objects

Abstract

Objects are best recognized from so-called "canonical" views. The characteristics of canonical views of arbitrary objects have been qualitatively described using a variety of different criteria, but little is known regarding how these views might be acquired during object learning. We address this issue, in part, by examining the role of object motion in the selection of preferred views of novel objects. Specifically, we adopt a modeling approach to investigate whether or not the sequence of views seen during initial exposure to an object contributes to observers' preferences for particular images in the sequence. In two experiments, we exposed observers to short sequences depicting rigidly rotating novel objects and subsequently collected subjective ratings of view canonicality (Experiment 1) and recall rates for individual views (Experiment 2). Given these two operational definitions of view canonicality, we attempted to fit both sets of behavioral data with a computational model incorporating 3-D shape information (object foreshortening), as well as information relevant to the temporal order of views presented during training (the rate of change for object foreshortening). Both sets of ratings were reasonably well predicted using only 3-D shape; the inclusion of terms that capture sequence order improved model performance significantly.

Restoring Vision through “Project Prakash”: The Opportunities for Merging Science and Service

“…This work has also demonstrated how motion information plays a crucial role in parsing the world into distinct objects and, more importantly, in helping the visual system learn heuristics that can be used even with static images. The results have guided our studies of normally sighted individuals, as well as our computational modeling efforts [6]–[8]. Complementing our behavioral studies, we have begun to employ non-invasive brain imaging technology, specifically functional magnetic resonance imaging (fMRI), to examine the kinds of cortical changes that accompany the very initial stages of human sensory development.…”

Remembering kith and kin is underpinned by rapid memory updating: Implications for exemplar theory.

“…This analysis receives independent support from studies of object recognition in human participants (Liu, 2007). Here, participants were better able to recognize images of two-dimensional renderings of three-dimensional objects that had been part of abruptly changing sequences than those that had been part of gradually changing sequences (see Experiment 3, Liu, 2007; see also . Balas & Sinha, 2009).…”

“…This analysis receives independent support from studies of object recognition in human participants (Liu, 2007). Here, participants were better able to recognize images of two-dimensional renderings of three-dimensional objects that had been part of abruptly changing sequences than those that had been part of gradually changing sequences (see Experiment 3, Liu, 2007; see also, Balas & Sinha, 2009). However, this procedure with humans, like that with chicks, did not control for more nonspecific consequences of the structure of exposure to exemplars (abruptly or gradually changing) on, for example, general attentiveness or arousal.…”