Talks: Human Computer Vision Series

Perceptual completion is the process by which the visual system combines contour information over space and time to represent object shape and number. Perceptual completion is compromised in schizophrenia but

The human visual system is capable of recognizing complex objects even when their appearances change drastically under various viewing conditions. Especially in the higher cortical areas the sensory neurons reflect

Abstract: The area of motion planning studies algorithms that return actions that must be executed to accomplish a physical task. It has applications in robotics simulation cyber-physical systems and human-centered

Perception operates on an immenseamount of incoming information that greatly exceeds its processing capacity. Becauseof this fundamental limitation our perceptual efficiency isconstrained by theability to suppress irrelevant information. Here I

We propose two new theoretical perspectives on visual short-term memory (VSTM). In Project 1 we conceptualize VSTM as an information channel for transmitting visual information from the past to the

ABSTRACT: This talk discusses my work with multi-robot systems and the ways in which humans can interact with such systems. In particular I focus on two research challenges: (1) human

Simple perceptual decisions are widely considered to comprise three stages: sensory encoding decision formation and motor execution. By far the most mysterious has been the intermediate stage. Models drawing on

Sensory cortical areas are topographically organized yet the contribution of this organization to perception is largely unknown. I present recent work providing evidence that the topographical organization of cortical population

When glancing at a magazine or browsing the Internet we are continuously exposed to images. Despite this overflow of visual information humans are extremely good at remembering thousands of pictures

A longstanding problem in linguistics is how listeners convert "messy" perceptual input into useful phonological information which maps to meaningful syntactic semantic and/or conceptual information. The interface between perception and

While cognitive decision-making studies often address how people combine many different cues perceptual studies are usually limited to how people combine just two or three cues. A major benefit of

Although many existing automatic pattern recognition systems have achieved considerable success over the past fifty years the performance of most of these systems deteriorates drastically in unpredictable and changing environments.

There is significant work on how we recognize structurewithin objects and scenes that we have previously encountered. But wehave strikingly little understanding of how the visual system flexiblyrepresents spatial structure

I will present a computational framework for understanding human Theory of Mind (ToM): our conception of others' mental states and their relation to the world and behavior. ToM supports behavioral

Human computation (HC) utilizes humans to solve problems or carry out tasks that are hard for pure computational algorithms. Many graphics and vision problems have such tasks. Previous HC approaches

The process of transforming sensory inputs into actions is commonly viewed as a serial and hierarchical affair: the cerebral cortex evaluates and decides and the brainstem generates the necessary

The perceived lightness (shade of gray) of an object depends on the scene in which it is viewed. Part of this dependence is simple to understand. The illumination impinging on

Whereas limits of visual processing are interesting in their own right these limits take on a deeper meaning where vision integrates with other cognitive systems. It is at this point

Online social networks articulated through many of the today's popular Web applications such as Facebook and Twitter provide people with ways to create connections seek support share ideas form and

Everyday experience is highly structured: we repeatedly encounter the same people places and things and they tend to appear in reliable spatial and temporal patterns. Learning about these regularities may

In reinforcement learning algorithms traditionally are concerned with finding a policy (an optimal mapping of all states to actions) in domains that have a finite state and action space. Extending

When square wave gratings are viewed binocularly with lower luminance or contrast in one eye the individual bars of the grating appear to rotate around a vertical axis (Venetian blind

Fall Cognitive Festival Presentations 12:00 noon Conference room 101 Vicky Froyen: A Bayesian framework for figure-ground interpretation Gaurav Kharkwal: Linguistic representations of visual events Janani Prabhakar: The development

Perceiving objects and scenes as coherent in three dimensions (3D) is a fundamental ability of the mature visual system. How and when the mechanisms supporting coherent 3D object processing arise

My talk will have two parts that are related each other. First I will talk about some fundamental issues involved in investigating underlying mechanisms of a phenomenon called "completion": filling-in

Complex networks are ubiquitous in many domains. Examples include technological informational social and biological networks. In this talk I will present algorithms for both relational classification and clustering in such

Whenever we navigate a scene grasp an object or even assess threat accurate size information is critical to appropriate actions. Yet the computational and neural solutions to size extraction are

People communicate using language whether spoken written or typed. A significant amount of this language describes the world around us especially the visual world in an environment or depicted in

Perceptual learning improves perceptual task performance in distinctive ways. External noise tests and noisy ideal observer models can characterize the effects of perceptual learning (or attention) on an observer's performance.

What is the representation in early vision? Considerable research has demonstrated that the representation is not equally faithful throughout the visual field; representation appears to be coarser in peripheral and

At early stages of processing the human visual system extracts and encodes information in a manner that most efficiently represents visual scenes as they are projected onto the retina.That is

The functional anatomy of speech sound processing is comprised of a distributed cortical system that encompasses regions along at least two processing streams. A ventral temporal lobe pathway primarily mediates

Classically human cognition has been evaluated relative to a logical engine.Deviations of human performance from the expectations based on normative logic are typically attributed to information processing limitations.This talk

Infant visual sensory processing is immature in many ways but there are two immaturities that critically limit infant visual performance. One is the anatomical immaturity of the infant fovea and

Most real-world visual scenes are crowded with many different competing objects. In order to interact effectively with the world we must select a single object from the multitude of

Anatoliy Kats (Computer Science Department Rutgers University) " Medial Part Abstraction and Grouping from Images " Medial axis-based representations represent a powerful class of symmetry-based shape decomposition that supports effective

Activities of daily living can be of different kinds. Among instrumental acts are those in the reaching family. They typically involve the coordination of one of the upper extremities with

Perceptual learning (PL) is defined as a long-term performance improvement on a perceptual task as a result of perceptual experience and is regarded as a manifestation of plasticity in perceptual

Perceptual grouping figure-ground organization shape detection and object recognition are all tasks the visual system can do. In real life outside the lab these processes are supposed to operate as

Contour interpolation is a perceptual process that builds phenomenologically salient contour representations from spatially segregated edges. Interpolation not only groups visible fragments together it also fills-in or represents boundaries that

Faces are considered a 'special'category of objects for the purposes of recognition. Here I report evidence that the human visual system relies more heavily on the use of surface

Adaptation is ubiquitous in sensory perception. While the perceptual consequences of adaptation have been widely studiedand characterized as various forms of aftereffects the functional and neural mechanism underlying adaptation

Our ability to recognize visual images depends critically on inferotemporal cortex (IT). Neurons in IT when tested with any arbitrary set of images are like snowflakes: all alike at one

Even simple animated characters can convey a compelling illusion of believability and stir empathy in audiences. In fact it seems that the simpler and more abstract is the character the

With every eye movement -- and we make 2 or 3 of these every second -- the world sweeps across the retina and moves to a different retinal location.

Many aspects of amodal completion in static scenes have been studied but relatively little is known about how completion interacts with moving structures in dynamic scenes. We examined whether amodal

The functional anatomy of speech sound processing is comprised of a distributed cortical system that encompasses regions along at least two processing streams. A ventral temporal lobe pathway primarily mediates