Results 21 to 30 of about 66,787 (268)

Ultrasound image smoothing based on adaptive and non-adaptive filters

Journal of the Pakistan Medical Association
Objective: To model adaptive and non-adaptive filters to ensure smooth ultrasound images. Method: The comparative study was conducted at Al-Yarmouk Teaching Hospital, Al Mustansiriyah University, Baghdad, Iraq, in 2019, and comprised ultrasound images ...
Heba Khudhair Abbas, Haidar Jawad Mohamad, Khloud Falih Abbas   +2 more
doaj   +1 more source

Adaptive parameters for tracking filters innovation system

Advances in Mechanical Engineering, 2016
One of the most important parts in target tracking is the filter algorithm. In the practical engineering, α-β-γ and α-β-γ-δ filters are often applied due to its simpler arithmetic operations.
Chun-Mu Wu
doaj   +1 more source

Adaptivni digitalni filtri / Adaptive digital filters [PDF]

Vojnotehnički Glasnik, 2002
Rad opisuje osnove funkcionisanja adaptivnih filtara. U uvodnim razmatranjima obra-đene su osnove matematičke obrade diskretnih signala i z-transformacije kod adaptivnih filtara. Izložen je Wienerov problem filtracije.
Dragan Petković
doaj   +1 more source

Adaptive polynomial Kalman filter for nonlinear state estimation in modified AR time series with fixed coefficients

IET Control Theory & Applications
This article presents a novel approach for adaptive nonlinear state estimation in a modified autoregressive time series with fixed coefficients, leveraging an adaptive polynomial Kalman filter (APKF).
Dileep Sivaraman, Songpol Ongwattanakul, Branesh M. Pillai, Jackrit Suthakorn   +3 more
doaj   +1 more source

FPGA Implementation of Efficient Adaptive Filter Incorporating Systolic Architecture [PDF]

Engineering and Technology Journal
This paper introduces an approach that capitalizes on the retimed delay concept to enhance adaptive filters' operational efficiency. In particular, it introduces an adaptive filter configuration with minimal critical path delay.
Harith Thannoon, Ivan Hashim
doaj   +1 more source

Double‐state chi‐square test based sparse grid quadrature filtering algorithm and its application in integrated navigation

IET Control Theory & Applications, 2023
Aiming to reduce the impact that the measurement uncertainty of nonlinear system brings to filtering accuracy, a novel sparse grid quadrature filter (SGQF) algorithm based on the double‐state chi‐square test is proposed.
Yifei WU, Yinrui Ma, Ye Jiang
doaj   +1 more source

Safety of Daprodustat for the Treatment of Chronic Kidney Disease Anemia: Final Analysis of a Multicenter Postmarketing Surveillance Study in Japan

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction This final analysis of a multicenter, prospective postmarketing surveillance study evaluated the safety of daprodustat in patients with chronic kidney disease anemia in routine clinical practice in Japan. Methods Patients who initiated daprodustat between September 2020 and July 2022 were registered.
Tadao Akizawa, Kyomi Kanaya, Kiyomi Aizawa, Masanori Onoki, Hirofumi Ozeki, Kazuko Suzuki, Ai Hayashi, Tomohiko Asamura   +7 more
wiley   +1 more source

A novel robust interacting multiple model filter for manoeuvering target tracking

Electronics Letters
A robust interacting multiple model approach is proposed to address the problem of accuracy and non‐Gaussian measurement noise in manoeuvering target tracking. The proposed approach introduces multiple fading factors into the prediction covariance matrix
Peng Gu, Zhongliang Jing, Liangbin Wu
doaj   +1 more source

Comparative study of low-pass filter and phase-locked loop type speed filters for sensorless control of AC drives

CES Transactions on Electrical Machines and Systems, 2017
High quality speed information is one of the key issues in machine sensorless drives, which often requires proper filtering of the estimated speed. This paper comparatively studies typical low-pass filters (LPF) and phase-locked loop (PLL) type filters ...
Dong Wang, Kaiyuan Lu, Peter Omand Rasmussen, Zhenyu Yang   +3 more
doaj   +1 more source

Telescoping Filter: A Practical Adaptive Filter

CoRR, 2021
Filters are fast, small and approximate set membership data structures. They are often used to filter out expensive accesses to a remote set S for negative queries (that is, a query x not in S). Filters have one-sided errors: on a negative query, a filter may say "present" with a tunable false-positve probability of epsilon.
Lee, David J., McCauley, Samuel, Singh, Shikha, Stein, Max   +3 more
openaire   +4 more sources