Simple everyday tasks, such as visual search, require a visual system that is sensitive to
differences. Here we report how observers perceive changes in natural image stimuli, and …

The perceived color of a uniform image patch depends not only on the spectral content of
the light that reaches the eye but also on its context. One of the most extensively studied …

How different are two images when viewed by a human observer? There is a class of
computational models which attempt to predict perceived differences between subtly …

Our visual system receives an enormous amount of information, but not all information is
retained. This is exemplified by the fact that subjects fail to detect large changes in a visual …

Perception is shaped not only by current sensory inputs but also by expectations generated
from past sensory experience. Humans viewing ambiguous stimuli in a stable visual …

During viewing of natural scenes, do low-level features guide attention, and if so, does this
depend on higher-level features? To answer these questions, we studied the image …

The contrast sensitivity function (csf) is central to describing spatial vision and to models of
visual coding, yet little is known about the form of the function under natural viewing …

We conducted suprathreshold discrimination experiments to compare how natural-scene
information is processed in central and peripheral vision (16° eccentricity). Observers' …

Considerable changes to an image often go undetected by observers if performed during a
brief visual disruption (eg a saccade or global mask). This change blindness however is …

The most common tasks in subjective image estimation are change detection (a detection
task) and image quality estimation (a preference task). We examined how the task …