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Stefan cel Mare
University of Suceava
Faculty of Electrical Engineering and
Computer Science
13, Universitatii Street
Suceava - 720229
ROMANIA

Print ISSN: 1582-7445
Online ISSN: 1844-7600
WorldCat: 643243560
doi: 10.4316/AECE


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  2/2018 - 10

Maximum Entropy Principle in Image Restoration

PETROVICI, M.-A. See more information about PETROVICI, M.-A. on SCOPUS See more information about PETROVICI, M.-A. on IEEExplore See more information about PETROVICI, M.-A. on Web of Science, DAMIAN, C. See more information about  DAMIAN, C. on SCOPUS See more information about  DAMIAN, C. on SCOPUS See more information about DAMIAN, C. on Web of Science, COLTUC, D. See more information about COLTUC, D. on SCOPUS See more information about COLTUC, D. on SCOPUS See more information about COLTUC, D. on Web of Science
 
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Download PDF pdficon (1,479 KB) | Citation | Downloads: 895 | Views: 2,042

Author keywords
image processing, image reconstruction, image representation, image restoration, image sampling

References keywords
entropy(20), maximum(18), image(13), reconstruction(7), method(6), methods(5), data(5), astronomical(5), restoration(4), imaging(4)
Blue keywords are present in both the references section and the paper title.

About this article
Date of Publication: 2018-05-31
Volume 18, Issue 2, Year 2018, On page(s): 77 - 84
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2018.02010
Web of Science Accession Number: 000434245000010
SCOPUS ID: 85047876823

Abstract
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Many imaging systems are faced with the problem of estimating a true image from a degraded dataset. In such systems, the image degradation is translated into a convolution with a Point Spread Function (PSF) and addition of noise. Often, the image recovery by inverse filtering is not possible because the PSF matrix is ill-conditioned. Maximum Entropy (MaxEnt) is an alternative method, which uses the entropy concept for estimating the true image. This paper presents MaxEnt method, starting with the historical references of the entropy concept and finalizing with its application in image restoration and reconstruction. The statistical model of MaxEnt for images is discussed and the connection of MaxEnt with the Bayesian inference is explained. MaxEnt is evaluated by using a modified version of Cornwell algorithm. Two cases are considered: images degraded by various PSF kernels in presence of additive noise and images resulted from incomplete datasets. The tests show PSNR gains ranging from 1 to 7dB for the degraded images and images reconstructed at 25dB from datasets with up to 80% missing pixels.


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Cited-By CrossRef

[1] Examining and Mitigating Kernel Saturation in Convolutional Neural Networks using Negative Images, Gowdra, Nidhi, Sinha, Roopak, MacDonell, Stephen, IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, ISBN 978-1-7281-5414-5, 2020.
Digital Object Identifier: 10.1109/IECON43393.2020.9255147
[CrossRef]

[2] Examining convolutional feature extraction using Maximum Entropy (ME) and Signal-to-Noise Ratio (SNR) for image classification, Gowdra, Nidhi, Sinha, Roopak, MacDonell, Stephen, IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, ISBN 978-1-7281-5414-5, 2020.
Digital Object Identifier: 10.1109/IECON43393.2020.9254346
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