Results 1 to 10 of about 1,102,129 (260)

Impulsive Noise Removal with an Adaptive Weighted Arithmetic Mean Operator for Any Noise Density

open access: yesApplied Sciences, 2021
Many computer vision algorithms which are not robust to noise incorporate a noise removal stage in their workflow to avoid distortions in the final result. In the last decade, many filters for salt-and-pepper noise removal have been proposed.
Manuel González-Hidalgo   +3 more
doaj   +1 more source

A ROBUST OPEN-CLOSE SEQUENCE FILTER BASED ON MATHEMATICAL MORPHOLOGY [PDF]

open access: yesInternational Journal on Intelligent Electronic Systems, 2008
A robust open close sequence filter based on mathematical morphology for high probability impulse noise removal is presented. First, an impulse noise detector using mathematical residues is proposed to identify pixels that are contaminated by the salt or pepper noise.
Shyam Lal   +4 more
openaire   +1 more source

Dual-Band and Wideband Bandpass Filters Using Coupled Lines and Tri-Stepped Impedance Stubs

open access: yesMicromachines, 2023
In this paper, two bandpass filters—one with a dual-band response and the other with a wideband response—were designed, implemented, and experimented with.
Abdullah J. Alazemi
doaj   +1 more source

On the implementation and effectiveness of morphological close-open and open-close filters for topology optimization [PDF]

open access: yesStructural and Multidisciplinary Optimization, 2016
This note reconsiders the morphological close-open and open-close filters for topology optimization introduced in an earlier paper (Sigmund Struct Multidiscip Optim 33(4---5):401---424 (2007)). Close-open and open-close filters are defined as the sequential application of four dilation or erosion filters.
Schevenels, Mattias, Sigmund, Ole
openaire   +2 more sources

An Electroactive Filter with Tunable Porosity Based on Glycolated Polythiophene

open access: yesSmall Science, 2022
The porosity of filters is typically fixed; thus, complex purification processes require application of multiple specialized filters. In contrast, smart filters with controllable and tunable properties enable dynamic separation in a single setup. Herein,
Johannes Gladisch   +6 more
doaj   +1 more source

Landsat 8 Lake Water Clarity Empirical Algorithms: Large-Scale Calibration and Validation Using Government and Citizen Science Data from across Canada

open access: yesRemote Sensing, 2021
Water clarity has been extensively assessed in Landsat-based remote sensing studies of inland waters, regularly relying on locally calibrated empirical algorithms, and close temporal matching between field data and satellite overpass.
Eliza S. Deutsch   +3 more
doaj   +1 more source

Resolved energy budget of superstructures in Rayleigh-B\'{e}nard convection [PDF]

open access: yes, 2020
Turbulent superstructures, i.e. large-scale flow structures in turbulent flows, play a crucial role in many geo- and astrophysical settings. In turbulent Rayleigh-B\'{e}nard convection, for example, horizontally extended coherent large-scale convection ...
Green, Gerrit   +3 more
core   +3 more sources

AUTOMATED DETECTION OF LUNAR RIDGES BASED ON DEM DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Wrinkle ridges are a common feature in the lunar maria and record subsequent contraction of mare infill. Automatic detection of wrinkle ridges is challenging because the ridges are of irregular shapes and many ridges have been eroded and/or degraded over
M. Peng, Y. Wang, Z. Yue, K. Di
doaj   +1 more source

Efficient Online Tracking-by-Detection With Kalman Filter

open access: yesIEEE Access, 2021
Visual tracking of multiple objects in videos has a promisingly broad application in manufacturing, construction, traffic, logistics, etc., especially in large-scale applications where it is not feasible to attach markers to many objects for traditional,
Siyuan Chen, Chenhui Shao
doaj   +1 more source

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