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Logarithmic transform coefficient histogram matching with spatial equalization

Blair Silver, Sos Agaian, Karen Panetta, Zia-ur Rahman, Robert A. Schowengerdt, Stephen E. Reichenbach
2005 Visual Information Processing XIV  
In the transform domain, one has control over subtle image properties such as low and high frequency content with their respective magnitudes and phases.  ...  In this paper we propose an image enhancement algorithm that is based on utilizing histogram data gathered from transform domain coefficients that will improve on the limitations of the histogram equalization  ...  ACKNOWLEDGEMENTS This research is supported in part by the NSF Award #0306464, by the Center for Infrastructure Assurance and Security, and by the US Air Force Information Warfare Center.  ... 
doi:10.1117/12.603542 dblp:conf/spieVIP/SilverAP05 fatcat:elmfdegoa5ertb7gwu2sascx3a


M. Mahdian, S. Homayouni, M. A. Fazel, F. Mohammadimanesh
2013 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
ACKNOWLEDGMENT The authors acknowledge NASA/JPL-Caltech for UAVSAR data over the SMAPVEX12 area in Winnipeg, MN, Canada, and Dr. H.  ...  McNairn from Agriculture and Agri-Food Canada for her helpful support and useful discussion.  ...  Expectation-Maximization (EM) classification algorithm is basically performed to estimate land cover classes.  ... 
doi:10.5194/isprsarchives-xl-1-w3-257-2013 fatcat:a3htn6gajzh63mrugecml7sxq4

Modified Alpha-Rooting Color Image Enhancement Method on the Two Side 2-D Quaternion Discrete Fourier Transform and the 2-D Discrete Fourier Transform

Artyom M. Grigoryan, Aparna John, Sos S Agaian
2017 Applied Mathematics and Sciences An International Journal (MathSJ)  
This paper proposes an implementation of the quaternion approach of enhancement algorithm for enhancing color images and is referred as the modified alpha-rooting by the two-dimensional quaternion discrete  ...  The author of four books, 9 book-chapters, 3 patents and more than 120 papers and specializing in the design of robust filters, fast transforms, tensor and paired transforms, discrete tomography, quaternion  ...  modified alpha rooting followed by accomplished (seeFigure9c) in the After the processing the image, it λ values for the channels X, Y, and Z corresponding to the maximums of the EME measure are respectively  ... 
doi:10.5121/mathsj.2017.4201 fatcat:2fzmbe4cbrguxa4m4q53qpasfm

Modified Alpha-Rooting Color Image Enhancement Method On The Two-Side 2-D Quaternion Discrete Fourier Transform And The 2-D Discrete Fourier Transform [article]

Artyom M. Grigoryan, Aparna John, Sos S. Agaian
2017 arXiv   pre-print
This paper proposes an implementation of the quaternion approach of enhancement algorithm for enhancing color images and is referred as the modified alpha-rooting by the two-dimensional quaternion discrete  ...  Most of the color image enhancement algorithms are applied channel-by-channel on each image. But such a system of color image processing is not processing the original color.  ...  modified alpha rooting followed by accomplished (seeFigure9c) in the After the processing the image, it λ values for the channels X, Y, and Z corresponding to the maximums of the EME measure are respectively  ... 
arXiv:1707.04781v1 fatcat:scmwe72whjdyrczcxihg63ol44

Page 758 of Mathematical Reviews Vol. 58, Issue 2 [page]

1979 Mathematical Reviews  
A sim- plified BASIC is described, and it is shown that a function is partial recursive if and only if it is computable by a BASIC program. All chapters are provided with well-chosen exercises.  ...  ISBN 3-411-01535-7 Chapter I introduces on an intuitive level the basic notions of algorithm, computable function, decidability and enumerability, and the main relations between these notions are made  ... 

Brain tumor visualization for magnetic resonance images using modified shape-based interpolation method

Dina Mohammed Sherif El-Torky, Mohamed Ismail Roushdy, Maryam Nabil Al-Berry, Mohammed Abd El-Mageed Salem
2022 International Journal of Power Electronics and Drive Systems (IJPEDS)  
We evaluated the proposed method by removing an original slice from the input images and interpolating it, the results outperform the original shape-based interpolation method by an average of 3% reaching  ...  The images were automatically segmented using a wavelet multi-resolution expectation maximization algorithm.  ...  ACKNOWLEDGEMENTS We would like to thank the Neurosurgery Department in Faculty of Medicine, Ain Shams University for providing us with expert feedback for our results.  ... 
doi:10.11591/ijece.v12i3.pp2553-2563 fatcat:4qh6sw3bqbh5rka4dr4ka3vjy4

Probabilistic Constraint Logic Programming. Formal Foundations of Quantitative and Statistical Inference in Constraint-Based Natural Language Processing [article]

Stefan Riezler
2000 arXiv   pre-print
The possibility of defining arbitrary properties of proof trees as properties of the log-linear probability model and efficiently estimating appropriate parameter values for them permits the probabilistic  ...  inference of the parameters and properties of such probability models from incomplete, i.e., unparsed data.  ...  In Sect. 4.3 we introduce the basic concepts of maximum likelihood estimation from incomplete data via the EM algorithm.  ... 
arXiv:cs/0008036v1 fatcat:vmk2ctxzh5c3ddmoyzs2elm7e4

Divergence Family Contribution to Data Evaluation in Blockchain via Alpha-EM and log-EM Algorithms

Yasuo Matsuyama
2021 IEEE Access  
This yields a new alpha-divergence, which can be used to jointly derive the alpha-EM algorithm (alphaexpectation-maximization algorithm) and the traditional log-EM algorithm.  ...  We note that the convergence speed of the alpha-EM algorithm is significantly higher than that of the log-EM algorithm.  ...  It has an important property whereby the traditional log-EM algorithm [10] and the α-EM algorithm [8] can be jointly derived.  ... 
doi:10.1109/access.2021.3056710 fatcat:6xsw4fp5yzcc3dmntfbuzdizsi

Page 1608 of Mathematical Reviews Vol. , Issue 2004b [page]

2004 Mathematical Reviews  
Transfinite Chomp exhibits regularities and closure properties not present in the smaller game.  ...  Summary: “Alpha-beta pruning is the algorithm of choice for searching game trees with position values taken from a totally ordered set, such as the set of real numbers.  ... 

Shape-preserving elastic solid models of macromolecules

Guang Song, Turkan Haliloglu
2020 PLoS Computational Biology  
Consequently, it can produce most economical coarse-grained models while faithfully preserving the shape and thus makes normal mode computations and visualization of extremely large complexes more manageable  ...  In this work, we present a vastly different elastic solid model (ESM) of macromolecules that shares the same simplicity and efficiency as ENMs in producing the equilibrium dynamics and moreover, offers  ...  It is worth noting that the original alpha shape algorithm [19] actually keeps also edges and triangles (also called 1-simplex and 2-simplex respectively) that pass the filter, while the alpha shape  ... 
doi:10.1371/journal.pcbi.1007855 pmid:32407309 fatcat:skpvm6er6nh4hg44qzp745qu7m

Protein-lipid interactions: correlation of a predictive algorithm for lipid-binding sites with three-dimensional structural data

David L Scott, Gerold Diez, Wolfgang H Goldmann
2006 Theoretical Biology and Medical Modelling  
in the intact protein, and possess favorable local or global electrostatic properties.  ...  Our matrix-based algorithm predicts lipid interaction sites that are consistent with the available biochemical and structural data.  ...  Acknowledgements This work was funded by the Deutsche Forschungsgemeinschaft (DFG; Is25/8-1 to WHG) and North Atlantic Treaty Organization (NATO; CLG 978417 to WHG). We thank Dr. H.  ... 
doi:10.1186/1742-4682-3-17 pmid:16569237 pmcid:PMC1523333 fatcat:62puagyka5gxhl5mwtcxyjdyyq

Basic physics [chapter]

Malcolm Sperrin
2014 Scientific Basis of the Royal College of Radiologists Fellowship  
Calculation of the dose to the basal layer of skin from beta/gamma contamination A R Curran High-pressure xenon time projection Titanium chamber: a methodology for detecting background radiation in neutrinoless  ...  and Simon R Cherry  ...  Q1.6 Transverse waves The figure above illustrates a transverse wave and the question challenges your understanding of basic wave properties.  ... 
doi:10.1088/978-0-7503-1058-1ch1 fatcat:odrb6jap2ff2xkacp3pxrupv6i

Bayesian nonstationary autoregressive models for biomedical signal analysis

M.J. Cassidy, W.D. Penny
2002 IEEE Transactions on Biomedical Engineering  
The algorithm allows for time and frequency domain characterization of nonstationary multivariate signals and is especially suited to the analysis of event-related data.  ...  We describe a variational Bayesian algorithm for the estimation of a multivariate autoregressive model with time-varying coefficients that adapt according to a linear dynamical system.  ...  ACKNOWLEDGMENT The authors would like to thank S. Roberts, K. Friston, S. Kiebel and especially P. Brown for their advice and support during the preparation of this manuscript.  ... 
doi:10.1109/tbme.2002.803511 pmid:12374338 fatcat:23dv2m7lnzeabd2nohixoc7m7m

Omega: An Architecture for AI Unification [article]

Eray Özkural
2018 arXiv   pre-print
We retain the basic design of a fundamental algorithmic substrate called an "AI kernel" for problem solving and basic cognitive functions like memory, and a larger, modular architecture that re-uses the  ...  The architecture is intended to initially address data science automation, hence it includes many problem solving methods for statistical tasks.  ...  The system is like Alpha, because it re-uses the basic design of PSMs.  ... 
arXiv:1805.12069v1 fatcat:gkj27nzfb5azrkfrawgqil5pim

Using WFSTs for Efficient EM Learning of Probabilistic CFGs and Their Extensions

Yoshitaka Kameya, Takashi Mori, Taisuke Sato
2014 Journal of Natural Language Processing  
In addition, we propose a polynomial-time EM algorithm for CFGs with contextsensitive probabilities, and report experimental results with the ATR dialogue corpus and a hand-crafted Japanese grammar.  ...  The Inside-Outside (I-O) algorithm is well known as an efficient EM algorithm tailored for PCFGs.  ...  comes from a property whereby we only need the WFST for EM learning.  ... 
doi:10.5715/jnlp.21.619 fatcat:viys7iqe2ndbpbardhrshwbwk4
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