spatial filter


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spatial filter

[′spā·shəl ′fil·tər]
(optics)
An optical filter that consists of a very small aperture, such as a pinhole.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
"A spatial filter made in this fashion can achieve similar versatility, changing which frequency it blocks as the filter is compressed or expanded."
An appropriate spatial filter is applied to the PANI in MRA class for generating spatial details.
Panduranga, A Survey on Image Enhancement Techniques: Classical Spatial Filter, Neural Network, Cellular Neural Network, and Fuzzy Filter.
This is equivalent to applying a low-pass spatial filter. The data treatment within the neighborhood defines the verification strategy, ranging from simple upscaling to the use of probabilistic and ensemble verification approaches by assessing the forecast probability density function within the observation neighborhood.
Among the topics are harnessing the fuzziness of the pragmatic rule-design without IF-THEN rules, designing a robust spatial filter for motor imagery electroencephalography signal classification in brain-computer interface systems, an improved method for mobile robot navigation based on the spinal neural system, the reliable analysis of wireless sensor networks based on the fusion of binary decision diagrams and fault trees, and building geographical information application systems for water and soil preservation.
On the other hand, the spatial filter serves as an essential part of a high-power laser system [8-11].
The object wave and reference wave are both expanded and collimated by a spatial filter and a lens, respectively.
Both beams are collimated by spatial filter. Beamsplitters (BS1) divide the beams into the reference and the object arms.
The multiple channels signal can be converted into a single surrogate channel by applying common averaging filter, large Laplacian spatial filter, and common spatial pattern (CSP) filter.
(b) Spatial filter: For the EEG data filtered in each sub-band, spatial filters were computed with the CSP algorithm.
Spatial Filters. A spatial filter replaces the value at a given pixel with an operand value (mean, median, threshold-based sigma, etc.) of all pixels within a selected neighborhood.
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