Firstly, these noisy patterns are induced in the spoofing video due to the spatial frequency
differences between the display and the acquisition device .
In the contrast sensitivity test, 0.5-1.5 cpd is defined as low, 3.0-6.0 cpd as intermediate, and 12.0-24.0 cpd as high spatial frequency
. The subjects were divided by age into three groups in order to compare contrast sensitivity curves: group 1 included 11 subjects 7-19 years old; group 2 included 15 subjects 20-49 years old; and group 3 included 11 subjects 50-65 years old.
In the reconstruction step, we move these SR spatial frequency
components, D(k [+ or -] p), back to their original location in reciprocal space.
Analyses with the post hoc Newman-Keuls test showed significant differences between the CC and EC only in the spatial frequency
of 4 cpd (P<0.0001).
which is the apparent surface stress required to create surface modulation of spatial frequency
of [omega] in an elastic film of thickness of h.
An electrophysiological study on the interaction between emotional content and spatial frequency
of visual stimuli.
Software engineering topics include modeling V1 as a spatial frequency
analyzer, the mathematics of image processing with irregularly sampled data, the relationship between super-resolution techniques and the eye movements known as tremor and microsaccades, eye vergence and depth perception as they pertain to a robotic assisted surgery application, and motion detection algorithms.
Then each scaled cell is filled with grating elements in transformed orientation and at a spatial frequency
that emphasizes the assigned primary colors.
Matched pair, exposure (perc exposed, unexposed), and spatial frequency
(cycles per degree) were independent variables; VCS was the dependent variable.
This indicates that the cuttlefish visual system must sample and process wide ranges of spatial frequency
information from substrates to produce the appropriate body coloration for camouflage.
Normal individuals exhibit higher contrast sensitivity at intermediate spatial frequencies, producing an inverted-U function relating sensitivity to spatial frequency
(see Campbell & Robson, 1968; Regan, 1982).
To accomplish this, in case of the interferometric acousto-optic receiver, the temporal frequency, not the spatial frequency
, of the output signal must be known.