Future Repository
Not a member yet
2157 research outputs found
Sort by
An Enhanced Fast Iterative Blind Deconvolution Algorithm for Noiseless and Noisy Images
No full textSuccessful blind image deconvolution algorithms require the exact estimation of the Point Spread Function size, PSF. In the absence of any priori information about the imagery system and the true image, this estimation is normally done by trial and error experimentation, until an acceptable restored image quality is obtained. This paper, presents an exact estimation of the PSF size, which yields the optimum restored image quality, for both noisy and noiseless images. It is based on evaluating the detail energy of the wave packet decomposition of the blurred image. The minimum detail energy occur at the optimum PSF size. Having accurately estimated the PSF, the paper also proposes a fast double updating algorithm for improving the quality of the restored image. This is achieved by the least squares minimization of a system of linear equations describing some peak error deviations derived from the blurred image. Extension to the noisy case has also been investigated. Simulation results of several examples have verified that the proposed technique manages to yield a sharper image with higher PSNR than classical approaches
Reliability, availability and serviceability of networks-on-chip / Erika Cota, Alexandre de Morais Amory, Marcelo Soares Lubaszewski.
No full textBook Fair 2013.xiii, 209 p.
Doing data analysis with SPSS version 18 / Robert H. Carver, Jane Gradwohl Nash.
No full textIncludes index.Book fair 2012xvi, 323 p.
The Effect of Some Carbonated Beverages on Enamel of Human Premolars (Scanning and Light Microscopic Study)
No full textIn modern societies, the increased consumption of soft drinks is becoming more important because of the concern for dental erosion. The aim of the present study is to reveal and compare the possible effect of some carbonated beverages on occlusal and cervical parts of enamel in the buccal surface of human premolars. Twenty sound (caries- free) human maxillary premolars extracted for orthodontic reasons were used in the present study. The teeth were then divided into: Control group: (before immersion in the beverages), in which the collected teeth were immersed at first in tap water and subdivided into 4 subgroups (5 teeth each) and named; Control Sprite, Control Mirinda Orange, Control Coca- Cola and subgroup R. Experimental group: (after immersion in the beverages) in which the first 3 subgroups which were used as control were then utilized as experimental after immersion in the corresponding beverage. They were named; Subgroup S (Sprite experimental Subgroup), Subgroup M (Mirinda Orange experimental Subgroup) and Subgroup C (Coca-Cola experimental Subgroup). The teeth were examined using SEM and light microscope. Morphometric study was performed, using computerized image analyzer for the assessment of affected band thickness. The SEM results of the experimental subgroups revealed that each beverage cause different pattern of erosion. In Subgroup S, the enamel surface was feather like and pitted. In Subgroup M, the enamel surface presented the honeycomb pattern. In Subgroup C, the enamel surface was nearly smooth with generalized structural loss. It was noticed also that the changes in enamel surface became more accentuated toward the cervical third. The light microscopic examination revealed that in both Subgroups S and C the outer enamel layer exhibited dark band of affection, while in Subgroup M this band was translucent. The affection of subsurface and deep enamel layers was noticed in all the experimental subgroups, in addition the changes in enamel became more accentuated toward the cervical third. The morphometric data revealed that the thickness of the affected band in the outer layer of enamel increased toward the cervical third in all experimental subgroups. This band was minimal in Subgroup S, and increased in Subgroup M, followed by Subgroup C. From the present study we can conclude that acidic beverages had deleterious effect on dental hard tissues. Among the investigated drinks of the present work, the Sprite had the least erosive potential, followed by Mirinda Orange, then Coca-Cola which had the most erosive potential. The erosive potential of a beverage was depended on its pH value, titratable acidity, type and concentration of the acid(s) present. Enamel affection for a given beverage was maximum at the cervical third and minimal in the occlusal
A New Fast Iterative Blind Deconvolution Algorithm
No full textSuccessful blind image deconvolution algorithms require the exact estimation of the Point Spread Function size, PSF. In the absence of any priori information about the imagery system and the true image, this estimation is normally done by trial and error experimentation, until an acceptable restored image quality is obtained. This paper, presents an exact es- timation of the PSF size, which yields the optimum restored image quality for both noisy and noiseless images. It is based on evaluating the detail energy of the wave packet decomposition of the blurred image. The minimum detail en- ergies occur at the optimum PSF size. Having accurately estimated the PSF, the paper also proposes a fast double up- dating algorithm for improving the quality of the restored image. This is achieved by the least squares minimization of a system of linear equations that minimizes some error functions derived from the blurred image. Moreover, a technique is also proposed to improve the sharpness of the deconvolved images, by constrained maximization of some of the de- tail wavelet packet energies. Simulation results of several examples have verified that the proposed technique manages to yield a sharper image with higher PSNR than classical approaches.Journal of Signal and Information Processin
Java : an introduction to problem solving & programming / Walter Savitch ; contributor, Kenrick Mock.
No full textIncludes index.Book fair 2013.xxxiii, 950 p.
Introduction to statistics & data analysis.
No full textIncludes bibliographical references (p.879-881) and index.Book fair 2012xxvii, 912 p.
Cloud computing and services science / Ivan Ivanov, Marten van Sinderen, Boris Shishkov, editors.
No full text"[E]ssentially a collection of the best papers of the International Conference on Cloud Computing and Services Science (CLOSER), which was held in Noordwijkerhout, The Netherlands on May 7-9, 2011"--P. v.computer bookfair2015Includes bibliographical references and index.xv, 390 pages
Nanotechnology and nanomedicine in diabetes / editors, Lan-Anh Le, Ross J. Hunter, Victor R. Preedy.
No full textIncludes bibliographical references and index.xi, 406 p. :"Understanding the importance of nanosciences is somewhat problematic as a great deal of text can be rather technical in nature with little consideration to the novice. In this book information is readable as it has sections for the novice and expert alike. Each chapter has an abstract, "key facts", and a "mini-dictionary" of key terms and phrases within each chapter. Each chapter has a summary in point form The book covers for example, introductions to the field, lipid matrix nanoparticles, atomic force microscopy, characterization of tissues at the nanometer scale, antisense oligonucleotides, carbon nanotubes, , nanocomposites, nanorods, carbon nanomaterials, nanolabeled diabetogenic, nanofiber wound dressings, and nanotechnology footsocks"-