Image and video coding is an optimization problem. A successful image and video coding
algorithm delivers a good tradeoff between visual quality and other coding performance …

purpose. Individual cones were imaged in the living human eye with the Rochester adaptive
optics ophthalmoscope. In all eyes, there were large differences in the reflectance of …

The visual system has a duplex design to meet conflicting environmental demands: the
fovea has the resolution required to process fine spatial information, but the periphery is …

Reaction times (RTs) are obtained for a wide range of contrasts of vertical sinusoidal
gratings. The data are plotted as a function of the reciprocal of contrast. In some conditions …

This paper explores the problem of communicating high-quality, foveated video streams in
real time. Foveated video exploits the nonuniform resolution of the human visual system by …

Lossy video compression methods often rely on modeling the abilities and limitations of the
intended receiver, the human visual system (HVS), to achieve the highest possible …

The retina is one of the most highly conserved parts of the central nervous system, with
unambiguous homology of major cell types among most chordates. These cells and their …

By exploiting new human-machine interface techniques, such as visual eyetrackers, it
should be possible to develop more efficient visual multimedia services associated with low …

A human visual system model, foveation, is used to provide user-oriented video scalability,
which benefits those applications concerning user's regions of interest. Based on processing …

In this thesis three studies are presented. The first study (Chapter 1) investigates the
properties of 2 nd-order spatial frequency channels. Here, the stimulus is a 2 nd-order sine …