Statistical templates for visual search

Statistical templates for visual search.

How do we find a target embedded in a scene? Within the framework of signal detection theory, this task is carried out by comparing each region of the scene with a "template," i.e., an internal representation of the search target. Here we ask what form this representation takes when the search target is a complex image with uncertain orientation. We examine three possible representations. The f...

Category Search for Video Using Semantic Visual Templates

We tackle the problem of category search for video using Semantic Visual Templates (SVTs). SVTs represent personalized views of a concept and define an effective set of queries to retrieve a general category of images and videos. The system generates SVTs in two stages: training initial templates and Bayesian relevance feedback. Given a labeled database of videos, the system trains an initial s...

Object - based target templates guide attention during visual search

Statistical patterns of visual search for hidden objects

The movement of the eyes has been the subject of intensive research as a way to elucidate inner mechanisms of cognitive processes. A cognitive task that is rather frequent in our daily life is the visual search for hidden objects. Here we investigate through eye-tracking experiments the statistical properties associated with the search of target images embedded in a landscape of distractors. Sp...

In search of templates

This study reflects a recent shift towards the study of early stages of expert memory acquisition for chess positions. Over the course of 15 sessions, two subjects who knew virtually nothing about the game of chess were trained to memorise positions. Increase in recall performance and chunk size was captured by power functions, confirming predictions made by the template theory [Cogn. Psychol. ...