Results 11 to 20 of about 90,279 (294)

Testing straightness of line objects using total least squares [PDF]

open access: yesTehnika, 2017
The paper presents the adaptation (fitting) of a set of points, with an estimated two-dimensional positions, to the straight line model of the by the application of the Weighted Total Least Squares, WTLS.
Popović Jovan   +4 more
doaj   +2 more sources

Algorithms and statistical analysis for linear structured weighted total least squares problem

open access: yesGeodesy and Geodynamics
Weighted total least squares (WTLS) have been regarded as the standard tool for the errors-in-variables (EIV) model in which all the elements in the observation vector and the coefficient matrix are contaminated with random errors.
Jian Xie   +4 more
doaj   +2 more sources

A Stochastic Total Least Squares Solution of Adaptive Filtering Problem [PDF]

open access: yesThe Scientific World Journal, 2014
An efficient and computationally linear algorithm is derived for total least squares solution of adaptive filtering problem, when both input and output signals are contaminated by noise.
Shazia Javed, Noor Atinah Ahmad
doaj   +2 more sources

Implications of Nonstationary Effect on Geographically Weighted Total Least Squares Regression for PM2.5 Estimation. [PDF]

open access: yesInt J Environ Res Public Health, 2021
Land use regression (LUR) models are used for high-resolution air pollution assessment. These models use independent parameters based on an assumption that these parameters are accurate and invariable; however, they are observational parameters derived ...
Mokhtari A, Tashayo B, Deilami K.
europepmc   +2 more sources

Robust denoising-oriented point cloud plane fitting method based on a combined model of improved Cook’s distance and WTLS [PDF]

open access: yesJournal of Intelligent Manufacturing and Special Equipment, 2022
Purpose – In order to improve the robustness to noise in point cloud plane fitting, a combined model of improved Cook’s distance (ICOOK) and WTLS is proposed by setting a modified Cook’s increment, which could help adaptively remove the noise points that
Chongjun Wu   +3 more
doaj   +1 more source

PERFORMING IMPROVED TWO-STEP CAMERA CALIBRATION WITH WEIGHTED TOTAL LEAST-SQUARES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
In order to improve the Tsai's two-step camera calibration method, we present a camera model which accounts for major sources of lens distortion, namely: radial, decentering, and thin prism distortions.
J. Lu
doaj   +1 more source

An Efficient Algorithm for Infrared Earth Sensor with a Large Field of View

open access: yesSensors, 2022
Infrared Earth sensors with large-field-of-view (FOV) cameras are widely used in low-Earth-orbit satellites. To improve the accuracy and speed of Earth sensors, an algorithm based on modified random sample consensus (RANSAC) and weighted total least ...
Bendong Wang, Hao Wang, Zhonghe Jin
doaj   +1 more source

A Rigorous Feature Extraction Algorithm for Spherical Target Identification in Terrestrial Laser Scanning

open access: yesRemote Sensing, 2022
Precise and rapid extraction of spherical target features from laser point clouds is critical for achieving high-precision registration of multiple point clouds.
Ronghua Yang   +3 more
doaj   +1 more source

Comparison of straight line curve fit approaches for determining parameter variances and covariances

open access: yesInternational Journal of Metrology and Quality Engineering, 2020
Pressure balances are known to have a linear straight line equation of the form y = ax + b that relates the applied pressure x to the effective area y, and recent work has investigated the use of Ordinary Least Squares (OLS), Weighted Least Squares (WLS),
Ramnath Vishal
doaj   +1 more source

Using partial least squares to identify a dietary pattern associated with obesity in a nationally-representative sample of Canadian adults: Results from the Canadian Community Health Survey—Nutrition 2015

open access: yesPLoS ONE, 2021
Background Hybrid methods of dietary patterns analysis have emerged as a unique and informative way to study diet-disease relationships in nutritional epidemiology research. Objective To identify an obesogenic dietary pattern using weighted partial least
Alena (Praneet) Ng   +2 more
doaj   +2 more sources

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