User profiles for Alan A. Stocker

Alan A Stocker

University of Pennsylvania
Verified email at psych.upenn.edu
Cited by 3909

Anomaly detection from hyperspectral imagery

…, EM Winter, AP Schaum, AD Stocker - IEEE signal …, 2002 - ieeexplore.ieee.org
We develop anomaly detectors, ie, detectors that do not presuppose a signature model of
one or more dimensions, for three clutter models: the local normal model, the global normal …

Noise characteristics and prior expectations in human visual speed perception

AA Stocker, EP Simoncelli - Nature neuroscience, 2006 - nature.com
Human visual speed perception is qualitatively consistent with a Bayesian observer that
optimally combines noisy measurements with a prior preference for lower speeds. Quantitative …

A Bayesian observer model constrained by efficient coding can explain'anti-Bayesian'percepts

XX Wei, AA Stocker - Nature neuroscience, 2015 - nature.com
Bayesian observer models provide a principled account of the fact that our perception of the
world rarely matches physical reality. The standard explanation is that our percepts are …

[HTML][HTML] Visual adaptation: Neural, psychological and computational aspects

CWG Clifford, MA Webster, GB Stanley, AA Stocker… - Vision research, 2007 - Elsevier
The term visual adaptation describes the processes by which the visual system alters its
operating properties in response to changes in the environment. These continual adjustments in …

Automated hyperspectral cueing for civilian search and rescue

MT Eismann, AD Stocker… - Proceedings of the …, 2009 - ieeexplore.ieee.org
Hyperspectral remote sensing provides information related to surface material characteristics
that can be exploited to perform automated detection of targets of interest and has been …

Sensory adaptation within a Bayesian framework for perception

AA Stocker, E Simoncelli - Advances in neural information …, 2005 - proceedings.neurips.cc
We extend a previously developed Bayesian framework for perception to account for sensory
adaptation. We first note that the perceptual effects of adaptation seems inconsistent with …

Lawful relation between perceptual bias and discriminability

XX Wei, AA Stocker - … of the National Academy of Sciences, 2017 - National Acad Sciences
Perception of a stimulus can be characterized by two fundamental psychophysical measures:
how well the stimulus can be discriminated from similar ones (discrimination threshold) …

Comparative performance analysis of adaptive multispectral detectors

X Yu, IS Reed, AD Stocker - IEEE Transactions on Signal …, 1993 - ieeexplore.ieee.org
… Yu and AD Stocker are with the Space Computer Corporation, Santa Monica, CA 90404. …
Alan D. Stocker received the BSEE degree from the University of Virginia in 1979 and the …

Is the homunculus “aware” of sensory adaptation?

P Seriès, AA Stocker, EP Simoncelli - Neural computation, 2009 - direct.mit.edu
Neural activity and perception are both affected by sensory history. The work presented
here explores the relationship between the physiological effects of adaptation and their …

A Bayesian model of conditioned perception

AA Stocker, E Simoncelli - Advances in neural information …, 2007 - proceedings.neurips.cc
We propose an extended probabilistic model for human perception. We argue that in many
circumstances, human observers simultaneously evaluate sensory evidence under different …