Current digital imaging devices often enable the user to capture still frames at a high spatial resolution, or a short video clip at a lower spatial resolution. With bandwidth limitations inherent to any sensor, there is clearly a tradeoff between spatial and temporal sampling rates, which can be studied, and which present-day sensors do not exploit. The fixed sampling rate that is normally use...

(2014). Spatial aliasing effects in a steerable parametric loudspeaker for stereophonic sound reproduction. IEICE transactions on fundamentals of electronics, communications and computer sciences, E97-A(9), 1859-1866. or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any mat...

Two or more different entities that appear identical when observed in isolation are perceptually aliased. While the nature of perceptual aliasing is clearly general and its occurrence depends on the kind of entities and perceptual skills assumed, it originates a very practical problem when it comes to acquiring purposeful spatial representations, e.g., maps, of an unknown environment under expl...

In the scientific and industrial community a growing interest is nowadays devoted to sound source localization techniques. Among all the existing methods, the use of the beamforming algorithm in sound source localization problems is increasing, thanks to its many advantages if compared to the other available methods (Nearfield Acoustic Holography and Helmholtz Equation Least Square Method). The...

Shadow mapping suffers from spatial aliasing (visible as blocky shadows) as well as temporal aliasing (visible as flickering). Several methods have already been proposed for reducing such artifacts, but so far none is able to provide satisfying results in real time. This paper extends shadow mapping by reusing information of previously rasterized images, stored efficiently in a so-called histor...

In the extrafoveal retina, interference fringes at spatial frequencies higher than the resolution limit look like two-dimensional spatial noise, the origin of which has not been firmly established. We show that over a limited range of high spatial frequencies this noise takes on a striated appearance, with the striations running perpendicular to the true fringe orientation. A model of cone alia...

Ultra Wideband Antenna Array Processing Under Spatial Aliasing. (August 2007) Alireza Shapoury, B.S., Shahid Beheshti University of Iran; M.S., Iran University of Science and Technology Chair of Advisory Committee: Dr. Erchin Serpedin Given a certain transmission frequency, Shannon spatial sampling limit defines an upper bound for the antenna element spacing. Beyond this bound, the exceeded amb...