Results 31 to 40 of about 415,219 (164)

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

Scaled total least squares fundamentals [PDF]

open access: yesNumerische Mathematik, 2002
The authors analyse a particularly useful formulation of the scaled total least squares problem. The analysis is based on a new assumption that guarantees existence and uniqueness of meaningful solution for real positive parameters. The proposed in the paper theoretical considerations complex data are allowed.
Christopher C. Paige, Zdenek Strakos
openaire   +1 more source

Condition numbers of the mixed least squares-total least squares problem revisited

open access: yesLinear and Multilinear Algebra, 2022
20 ...
Qiaohua Liu, Qian Zhang, Dongmei Shen
openaire   +2 more sources

Least Mean Squares and Recursive Least Squares Algorithms for Total Harmonic Distortion Reduction Using Shunt Active Power Filter Control

open access: yesEnergies, 2019
This paper deals with the use of least mean squares (LMS, NLMS) and recursive least squares (RLS) algorithms for total harmonic distortion (THD) reduction using shunt active power filter (SAPF) control.
Radek Martinek   +4 more
doaj   +1 more source

Total Least Squares Approach to Modeling: A Matlab Toolbox [PDF]

open access: yesActa Montanistica Slovaca, 2010
This paper deals with a mathematical method known as total least squares or orthogonal regression or error-in-variables method.The mentioned method can be used for modeling of static and also dynamic processes.
Ivo Petráš, Dagmar Bednárová
doaj  

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

Regularization Total Least Squares and Randomized Algorithms

open access: yesMathematics
In order to achieve an effective approximation solution for solving discrete ill-conditioned problems, Golub, Hansen, and O’Leary used Tikhonov regularization and the total least squares (TRTLS) method, where the bidiagonal technique is considered to ...
Zhanshan Yang, Xilan Liu, Tiexiang Li
doaj   +1 more source

Scaled weighted total least-squares adjustment for partial errors-in-variables model

open access: yesJournal of Geodetic Science, 2016
Scaled total least-squares (STLS) unify LS, Data LS, and TLS with a different choice of scaled parameter. The function of the scaled parameter is to balance the effect of random error of coefficient matrix and observation vector for the estimate of ...
Zhao J.
doaj   +1 more source

A Contribution to the Conditioning of the Total Least-Squares Problem [PDF]

open access: yesSIAM Journal on Matrix Analysis and Applications, 2011
We derive closed formulas for the condition number of a linear function of the total least squares solution. Given an over determined linear system Ax=b, we show that this condition number can be computed using the singular values and the right singular vectors of [A,b] and A.
Baboulin, Marc, Gratton, Serge
openaire   +4 more sources

On the condition number of the total least squares problem [PDF]

open access: yesNumerische Mathematik, 2013
27 pages, 2 figures.
Zhongxiao Jia, Bingyu Li
openaire   +2 more sources

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