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Showing 1 to 4 of 4 for “"aliasing error"”.
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Randomized sampling and multiplier-less filtering
… sampling as a method to mitigate the effects of aliasing. Randomization of the sampling times is shown to convert aliasing error due to uniform under-sampling into uncorrelated shapeable noise. In certain applications, especially perceptual ones, this form of error may be preferable. Two sampling …
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Chebyshev spectral methods for potential field computation
… of Chebyshev polynomials, there are two kinds of errors: truncation and aliasing. We present a cell-average discretization scheme to reduce the aliasing error. Both theoretical analysis and numerical examples show that when there are discontinuities in a function, the cell-average discretization …
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ΚΑΘΟΡΙΣΜΟΣ ΤΗΣ ΔΙΑΝΟΜΗΣ ΤΩΝ ΠΕΔΙΑΚΩΝ ΜΕΓΕΘΩΝ ΣΕ ΣΥΣΤΗΜΑ ΑΓΩΓΙΜΩΝ ΠΛΑΚΩΝ ΑΠΟ ΔΙΕΓΕΡΣΗ ΓΕΝΙΚΕΥΜΕΝΗΣ ΜΟΡΦΗΣ ΜΕ ΕΦΑΡΜΟΓΗ ΤΟΥ ΑΛΓΟΡΙΘΜΟΥ FFT
… FOR THIS CATEGORY OF FUNCTIONS TWO KINDS OF ERRORS ARE INTRODUCED, BY THE USE OF DFT OR IDFT. THESE ERRORS ARE THE TRUNCATION ERROR (TE)AND THE ALIASING ERROR (AE). THESE ERRORS ARE INFLUENCED BY THREE PARAMETERS WHICH ARE THE KIND AND THE WIDTH OF THE WINDOW FUNCTION AND THE NUMBER OF …
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Distortion-optimal parallel MRI with sparse sampling: from adaptive spatio-temporal acquisition to self-calibrating reconstruction
… image quality both in terms of noise gain and aliasing distortion, and allows for analysis of the method's robustness to model mismatch. We present in-vivo results demonstrating the feasibility of the PARADISE scheme -- and its distinctive features and effectiveness -- for high resolution …