Results 271 to 280 of about 301,268 (301)

The role of root-mean-square error in the geo-transformation of images in GIS

Geographical Information Systems, 1996
ABSTRACT There is growing interest in the use of images in GIS applications. This paper examines the role of root-mean-square error in assessing the accuracy of digitisation and image–to–world transformation, The study employed Arc/Info software, using an aerial photograph of a small coastal settlement as the base image.
M. Morad, A. I. Chalmers, Peter R. O'Regan   +2 more
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Effect of the Relative Root-Mean-Square Error on Pavement Response

Analysis of Asphalt Pavement Materials and Systems, 2007
Analysis of flexible pavements using the multilayered elastic theory involves the use of elastic moduli backcalculated from deflection basins measured utilizing the Falling Weight Deflectometer (FWD). Uncertainties associated with the thickness of the elastic layers, seed moduli, and the backcalculation algorithms have been studied to increase the ...
Wael Alkasawneh, Ernie Pan, Roger Green
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Automatic Gamma Correction Based on Root-Mean-Square-Error Maximization

2020 International Conference on Computing and Information Technology (ICCIT-1441), 2020
Gamma correction is a well-known method used often for image enhancement, mainly to improve the luminance levels of dark and bright images. However, the enhancement level is highly affected by the gamma parameter used. In this paper, we propose a new iterative algorithm for automating the selection of the gamma value γ by maximizing the mean error ...
Ahmad S. Tarawneh, Ahmad B. Hassanat, Issam Elkhadiri, Dmitry Chetverikov, Khalid Almohammadi   +4 more
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Visual Acuity as a Function of Zernike Mode and Level of Root Mean Square Error

Optometry and Vision Science, 2003
ABSTRACT: Background. The coefficients of normalized Zernike expansion are orthogonal and reflect the relative contribution of each mode to the total root mean square (RMS) wavefront error.
Raymond A, Applegate, Charles, Ballentine, Hillery, Gross, Edwin J, Sarver, Charlene A, Sarver   +4 more
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Study of Dynamometer Cards Identification Based on Root-Mean-Square Error Algorithm

International Journal of Pattern Recognition and Artificial Intelligence, 2017
The surface dynamometer cards are important working condition data of sucker-rod pumping system. It has a very important practical significance for the analysis of transmission system and the diagnosis of oil production condition of sucker-rod pumping system.
Tao Ren, Xiaoqing Kang, Wen Sun, Hong Song   +3 more
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On the evaluation of root-mean-square errors in atomic coordinates in protein crystallography

Acta Crystallographica Section A, 1982
The calculation of standard deviations for atomic coordinates in human deoxyhaemoglobin A on the basis of various reciprocal-space residuals has shown the resulting values to be in good agreement with each other. Evidence is presented that such calculations may be more reliable than is commonly accepted. It is also shown that Wilson's statistics may be
Z. Derewenda, A. M. Brzozowski, A. Stępień, M. J. Grabowski   +3 more
openaire   +1 more source

Reduction of root-mean-square error in faceted space antennas

AIAA Journal, 1984
This paper examines the potential for reducing root-mean-square surface errors in shallow faceted reflectors by replacing flat facets with laterally curved membrane facets. Exact solutions are obtained for the small lateral deflections of equilateral triangular and rectangular membranes subject to isotropic tension and parabolic edge deflections. These
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Measurement of Root-Mean-Square Phase Errors in Arrayed Waveguide Gratings

Chinese Physics Letters, 2004
The interference-based method to measure the root-mean-square phase errors in SiO2-based arrayed waveguide gratings (AWGs) is presented. The experimental results show that the rms phase error of the tested AWG is 0.72 rad.
Zheng Xiao-Ping, Chu Yuan-Liang, Zhao Wei, Zhang Han-Yi, Guo Yi-Li   +4 more
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THE INFLUENCE OF THE ERROR of the ADC CONVERSION FUNCTION ON THE MEASUREment ERROR of THE ROOT MEAN SQUARE

Южно-Сибирский научный вестник, 2018
В настоящее время для измерения среднего квадратического значения (СКЗ) применяются преимущественно цифровые методы. Реализация данных методов предполагает использование аналого-цифровых преобразователей (АЦП) для получения отсчетов входного сигнала в цифровом виде.
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A note on minimum mean squared error estimation of signals with unit roots

Journal of Economic Dynamics and Control, 1988
Using an ARIMA parametrization, this note provides a very simple proof of how the Wiener-Kolmogorov-Whittle filter to estimate signals in time series can be extended to the nonstationary case. The proof is valid for any number and type of unit roots (not simply those implied by differencing) in both the signal and the overall model.
openaire   +1 more source