Results 211 to 220 of about 312,679 (259)
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On improving the accuracy of the Hough transform
Machine Vision and Applications, 1990The subject of this paper is very high precision parameter estimation using the Hough transform. We identify various problems that adversely affect the accuracy of the Hough transform and propose a new, high accuracy method that consists of smoothing the Hough arrayH(ρ, θ) prior to finding its peak location and interpolating about this peak to find a ...
Wayne Niblack, Dragutin Petkovic
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Computation of accuracy of current transformers
Electrical Engineering, 1940WHILE the general principles of the operation of current transformers have been known for some time, and tests have provided much experimental data, the introduction of high-speed relaying, especially differential protection, required a greater knowledge of currenttransformer performance than was necessary previously. It is the purpose of this paper to
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Accuracy of the Discrete Fourier Transform and the Fast Fourier Transform
SIAM Journal on Scientific Computing, 1996Accuracy of the discrete Fourier transform (DFT) and the fast Fourier transform (FFT) depends on the accuracy of the twiddle factors entirely. For accurate twiddle factor tables, this paper recommends to compute the sine/cosine functions with high precision arithmetic along the algorithms in terms of faster converging approximations, such as rational ...
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SPIE Proceedings, 2006
Colour management systems need to be accurate and repeatable, particularly in graphic arts applications such as converting image data to proofing systems and to final print processes. Modelling and computation errors were analyzed for a number of characterization data sets including single press sheet measurements and reference printing conditions ...
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Colour management systems need to be accurate and repeatable, particularly in graphic arts applications such as converting image data to proofing systems and to final print processes. Modelling and computation errors were analyzed for a number of characterization data sets including single press sheet measurements and reference printing conditions ...
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On the Accuracy of Fm-transform Approximation in Boundary Subintervals
2017 International Conference on High Performance Computing & Simulation (HPCS), 2017Fm-transform approximation loses its accuracy near the boundaries of the function domain. This is because of the truncated basic functions in the first and last subintervals. In this paper, we impose some effective techniques on Fm-transform to overcome this defect. Throughout various examples, it is shown that the utilized techniques can significantly
Masoumeh Zeinali, Sedaghat Shahmorad
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Effects of Facial Transformations on Accuracy of Recognition
The Journal of Social Psychology, 1994Alterations of facial features between the initial phase of a memory task and a later recognition test lower identification accuracy. The effects of leaving on, leaving off, adding, or removing targets' eyeglasses or beards on identification accuracy were examined in two experiments with American undergraduates.
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A software for evaluating local accuracy in the fourier transform
Mathematics and Computers in Simulation, 1980Abstract With the evolution of computers toward ever increasing computing speed, the numerical algorithms implemented on such computers are more and more complex, and require a very great number of computations. The numerical errors inherent in floating-point arithmetic of the computer generate errors in the results which may be fairly great. In this
Bois, P., Vignes, J.
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Effect of temperature on the accuracy of inductive current transformers
2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2018The paper deals with the evaluation of the accuracy variation of inductive current transformers vs. ambient temperature. There is a lack of information regarding if and how the accuracy of inductive current transformers changes with respect to temperature variations. To this purpose, in this paper a proper setup is presented and used for evaluating the
Mingotti, Alessandro +3 more
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