Results 91 to 100 of about 9,957 (160)

A Digital Image Denoising Algorithm Based on Gaussian Filtering and Bilateral Filtering

open access: yesITM Web of Conferences, 2018
Bilateral filtering has been applied in the area of digital image processing widely, but in the high gradient region of the image, bilateral filtering may generate staircase effect. Bilateral filtering can be regarded as one particular form of local mode
Piao Weiying, Yuan Yibao, Lin Haijun
doaj   +1 more source

Demonstration of a Realtime Active-Tag RFID, Java Based Indoor Localization System using Particle Filtering

open access: yes, 2007
To develop and demonstrate accurate indoor pedestrian navigation, we implemented a flexible location framework which is able to use various sensors as positioning sources.
Khider, Mohammed   +4 more
core  

Gaussian Filter-Based Image Denoising Detects Hidden Sweat Glands and Enhances Reliability of Active Sweat Gland Density Measurements

open access: yesJournal of Physiological Investigation
The quantitative sudomotor axon reflex test (QSART, Iontophoresis of 10% ACh with 2 mA for 5 min) is widely used in perspiration studies. However, it faces challenges such as suboptimal image quality and misidentification of hidden sweat glands as ...
Seunghyun Lee   +17 more
doaj   +1 more source

A New Inverse Halftoning Method Using Reversible Data Hiding for Halftone Images

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
A new inverse halftoning algorithm based on reversible data hiding techniques for halftone images is proposed in this paper. The proposed scheme has the advantages of two commonly used methods, the lookup table (LUT) and Gaussian filtering methods.
Wu Mei-Yi, Lee Jia-Hong, Wu Hong-Jie
doaj  

Blind estimation algorithm for frequency hopping parameters based on enhanced time-frequency ridge extraction

open access: yesNantong Daxue xuebao. Ziran kexue ban
In existing blind estimation algorithms for frequency-hopping parameters based on time-frequency ridges,performance degrades significantly when the signal-to-noise ratio(SNR) falls below-5 dB.
WAN Kai; CHANG Cheng; HOU Changbo; WU Xiangyu
doaj   +1 more source

The generalized Hierarchical Gaussian Filter

open access: yes
Hierarchical Bayesian models of perception and learning feature prominently in contemporary cognitive neuroscience where, for example, they inform computational concepts of mental disorders. This includes predictive coding and hierarchical Gaussian filtering (HGF), which differ in the nature of hierarchical representations.
Lilian Aline Weber   +5 more
openaire   +2 more sources

Square root kalman filter with contaminated observations [PDF]

open access: yes, 1992
The algorithm of square root Kalman filtering for the case of contaminated observations is described in the paper. This algorithm is suitable for the parallel computer implementation allowing to treat dynamic linear systems with large number of state ...
Rubio, A., Romera, Rosario, Cipra, Tomas
core  

IMAGE SMOOTHING MENGGUNAKAN MEAN FILTERING, MEDIAN FILTERING, MODUS FILTERING DAN GAUSSIAN FILTERING

open access: yes, 2015
Softening image (Image smoothing) aims to suppress the interference (noise) in the image. The disorder usually appears as a result of which is not good penerokan (sensor noise, photographic grain noise) or due to transmission line (the delivery of data ...
Yuwono, Bambang
core   +1 more source

Comparative Study of Gaussian and Nearest Mean Classifiers for Filtering Spam E-mails

open access: yes, 2012
The development of data-mining applications such as classification and clustering has shown the need for machine learning algorithms to be applied to large scale data.
Dr. Upasna Attri, Harpreet Kaur
core  

MSE-optimal measurement dimension reduction in gaussian filtering

open access: yes, 2020
We present a framework for measurement dimension reduction in Gaussian filtering, defined in terms of a linear operator acting on the measurement vector.
Berntorp, Karl,   +3 more
core   +1 more source

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