Maximum Entropy Method MEM2 and Its Application in Image Restoration

According to the limitations of the shooting environment, captured image exist the phenomenon of image blurring and noise. This paper proposes that the improved maximum entropy method recovery blurred image which acquire in aerial. Finally, according to the first order Markoff theory to evaluate the quality of the processed image, the results show that maximum entropy image restoration method compared to the conventional approach increase image clarity and details more better.

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Application of the Maximum Entropy Method in Ultrasonic Flaw Detection with Allowance for Echo Signal Shape Variability

Vestnik MEI ◽

10.24160/1993-6982-2018-5-111-119 ◽

2018 ◽

Vol 5 (5) ◽

pp. 111-119 ◽

Cited By ~ 1

Author(s):

Evgeniy G. Bazulin ◽

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Anton S. Vovk ◽

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Keyword(s):

Maximum Entropy ◽

Maximum Entropy Method ◽

Flaw Detection ◽

Entropy Method ◽

Echo Signal ◽

Signal Shape ◽

Ultrasonic Flaw Detection ◽

Ultrasonic Flaw

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Enhanced Information Recovery in 2D On-and Off-Resonance Nutation NQR using the Maximum Entropy Method

Zeitschrift für Naturforschung A ◽

10.1515/zna-1996-5-605 ◽

1996 ◽

Vol 51 (5-6) ◽

pp. 337-347 ◽

Cited By ~ 4

Author(s):

Mariusz Maćkowiak ◽

Piotr Kątowski

Keyword(s):

Maximum Entropy ◽

Maximum Entropy Method ◽

Theoretical Description ◽

Entropy Method ◽

Zero Field ◽

Resonance Effects ◽

Information Recovery ◽

Truncation Errors ◽

Enhanced Resolution ◽

2D Data

Abstract Two-dimensional zero-field nutation NQR spectroscopy has been used to determine the full quadrupolar tensor of spin - 3/2 nuclei in serveral molecular crystals containing the 3 5 Cl and 7 5 As nuclei. The problems of reconstructing 2D-nutation NQR spectra using conventional methods and the advantages of using implementation of the maximum entropy method (MEM) are analyzed. It is shown that the replacement of conventional Fourier transform by an alternative data processing by MEM in 2D NQR spectroscopy leads to sensitivity improvement, reduction of instrumental artefacts and truncation errors, shortened data acquisition times and suppression of noise, while at the same time increasing the resolution. The effects of off-resonance irradiation in nutation experiments are demonstrated both experimentally and theoretically. It is shown that off-resonance nutation spectroscopy is a useful extension of the conventional on-resonance experiments, thus facilitating the determination of asymmetry parameters in multiple spectrum. The theoretical description of the off-resonance effects in 2D nutation NQR spectroscopy is given, and general exact formulas for the asymmetry parameter are obtained. In off-resonance conditions, the resolution of the nutation NQR spectrum decreases with the spectrometer offset. However, an enhanced resolution can be achieved by using the maximum entropy method in 2D-data reconstruction.

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Estimating the distribution of primary reflection coefficients

Geophysics ◽

10.1190/1.1598135 ◽

2003 ◽

Vol 68 (4) ◽

pp. 1417-1422 ◽

Cited By ~ 6

Author(s):

Danilo R. Velis

Keyword(s):

Maximum Entropy ◽

Maximum Entropy Method ◽

Entropy Method ◽

Reflection Coefficients ◽

Log Data ◽

Neuquen Basin ◽

Neuquén Basin ◽

Skewness And Kurtosis

The distribution of primary reflection coefficients can be estimated by means of the maximum entropy method, giving rise to smooth nonparametric functions which are consistent with the data. Instead of using classical moments (e.g. skewness and kurtosis) to constraint the maximization, nonconventional sample statistics help to improve the quality of the estimates. Results using real log data from various wells located in the Neuquen Basin (Argentina) show the effectiveness of the method to estimate both robust and consistent distributions that may be used to simulate realistic sequences.

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