Vol 7, No 2 (2008)

Full Issue

CONTROL, COMPUTER SCIENCE AND INFORMATION SCIENCE
70th anniversary of professor Iosif Norairovich Sisakian
Kazanskiy N.L.
Abstract

An extended account (including the bibliography) of the talk to commemorate the 70-th anniversary of professor I. N. Sisakian and mark the 20-th anniversary of the Image Processing Systems Institute of the RAS is presented. The narrative of milestones in professor I. N. Sisakian’s life and professional career (08.03.1938 – 09.11.1995) is followed by the review of his major scientific achievements. Advances made after his untimely death in the field of Computer Optics pioneered by professor I. N. Sisakian are also over viewed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):9-34
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Optical micromanipulation
Skidanov R.V.
Abstract
Historical outlook into the development of the research of manipulation of microobjects in light beams is given. Experimental results on microparticle rotation in the light beams are discussed.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):35-50
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Intensity effect in diffraction gratings with magnetic layer
Bezus E.A., Bykov D.A.
Abstract

A magnetooptic effect which arises when the electromagnetic wave propagates through a two-layer structure made up of a metal diffraction grating and a magnetized dielectric layer is considered. The rigorous solution of the problem of diffraction by the structure suggests that there is a strong dependence between the intensity in the zero diffraction order and the layer magnetization. We offer a qualitative explanation that relates the said effect with waveguide modes.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):51-58
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Propagation of laser vortex beams with an arbitrary topological charge in a craded-index parabolic fiber
Strilets A.S.
Abstract

In this work, we discuss the propagation of the laser vortex beams exp{iμφ} in a parabolic fiber. The relationship between the complex amplitude and the transverse coordinates and the distance on the optical axis is described as the integral operator of propagation in a parabolic medium acting on the input beam amplitude distribution. This integral is analogous to the Fresnel integral that describes the propagation of paraxial laser beams in a uniform medium. The result of action of the integral operator onto the vortex beam can be analytically represented in two ways. In the first case, the kernel of the analytical expression for the amplitude is given by a degenerate hyper-geometric function. In the second case, the amplitude is represented as a composition of an infinite number of Gauss-Laguerre modes, which are eigenmodes of the parabolic fiber. The analytical relations derived are verified by numerical modeling with use of the integral operator and the method for propagating the light beams through thin lenses, which relies on the fast Fourier transform. The results of the numerical modeling and the analytical calculations agree within the method’s accuracy.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):59-64
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Band structure of a photonic crystal with the clathrate SI-34 crystal lattice
Dyachenko P.N., Kundikova N.D., Miklyayev Y.V., Pavelyev V.S.
Abstract

The band structure of a photonic crystal with the clathrate Si-34 lattice comprising 34 lattice sites in the unit cell is studied. The lattice is found to have a large isotropic band gap for a wide range of permittivity. The relationship between the photonic band isotropy and the permittivity is deduced.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):65-71
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Diffraction of the space-limited beam on the diffractive optical elements with radial symmetry
Kharitonov S.I., Kazanskiy N.L., Dmitriev A.Y.
Abstract

We discuss a method for solving the diffractive problem on the optical elements with the symmetrical distribution of the permittivity. The method under discussion is the generalization of the rigorous coupled wave analysis (RCWA) for structures with the radial symmetry. As the basis for the decomposition of the solution the conic waves are choosen. This conic waves are the solution of the Maxwell’s equations in the medium with the constant permittivity.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):72-86
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Characterization of optical vortices for micromanipulation purposes
Morozov A.A.
Abstract

Light beams with the orbital angular momentum in the problem of optical trapping and rotation of micro-objects are studied. Diffractive optical elements that generate a set of concentric rings of equal intensity for the optical trapping and rotation of opaque micro-objects are considered.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):87-93
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Modeling the hypergeometric laser beam propagation using parallel computing on multi-kernel architectures
Balalayev S.A.
Abstract

Numerical comparison of properties of the ideal infinite hypergeometric modes and their bounded analogs is made. The potentialities of diffractive optics methods in generating the hypergeometric modes are examined.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):94-100
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Examination of distortion effect on mode laser beams properties
Shevin A.O., Khonina S.N.
Abstract

Self-reproducing Gauss-Laguerre, Gauss-Hermite and Bessel mode beams and their possibility for reconstruction after obstacle (opaque or transparent with refractive index n = 1,5) distortion are considered in that paper. Optically trapped particle as an obstacle is regarded. A comparative analysis of Gauss-Laguerre, Gauss-Hermite and Bessel modes and superposition beams capacity for reconstruction is conducted.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):101-111
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Selecting the geometry of a halogenide antireflection grating profile with regard for the etching technology capabilities
Orekhova Y.A., Moiseev O.Y., Golovashkin D.L.
Abstract

This work studies the propagation of middle IR laser radiation through an antireflection relief fabricated on the optical surface (made of silver halogenide). A new technology of microrelief fabrication that allows its antireflection properties to be enhanced is proposed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):112-116
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Modeling of plant integumentary tissue influence on backscattered radiation
Bratchenco I.A., Zaharov V.P., Timchenko E.V.
Abstract

In present work the algorithm of integumentary plants fabric visualization, and also superficial phytogenesis formations, is developed. As a base method was used method Monte-Carlo. Statistical tests were made in program environmental TracePro Expert. The received scheme allows to consider influence of surface structure and form on integrated and differential properties of backscattered optical radiation, at interaction with a plant leaf.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):117-122
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Use of control volume method for the temperature field calculation by laser influence
Murzin S.P., Mezhenin A.V., Osetrov E.L.
Abstract

The temperature field calculation for the plate of sheet titanium alloy ОТ4-1 has been carried out by control volume method. It is shown that the forming temperature field is enough uniformly at the selected power distribution of surface energy source and technological object conveying speed. The calculation results correlate satisfactorily with results of experimental study (error is about 10-15%). The received data can be used at the thermal processing modes choise of titanium alloys by strip energy sources.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):123-129
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Softening of half-finished products from titanic low-alloy by laser anneal
Murzin S.P., Tregub V.I., Mezhenin A.V., Osetrov E.L.
Abstract

Experimental researches of cold work’s removal and formation recrystallizated structures conditions by laser heating have shown an opportunity of passing these processes in a range of recrystallization temperatures titanic low alloys. Researches properties of the processed materials have shown that laser anneal application for local softening before shaping of half-finished products from metal alloys allows to increase accuracy of manufacturing of details, to reduce springing and bending radiuses.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):130-134
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Germanuim monocrystals growing system based on contact method of measurement
Sahanski S.P.
Abstract

Germanium monocrystals growing system by Czochralski based on contact method of measurement of current crystal area has been developed and applied in industry. The system allows to grow germanium monocrystals in a closed thermal gadgetry ensuring the necessary low-gradient thermal conditions of crystal growing.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):135-144
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Parametric function of differential backscattering in multiple scattered media
Zakharov V.P., Sindyaeva A.R.
Abstract

A model scheme for spectral visualization of biological media macrostructure is presented. Superficial tissue with heterogeneities was chosen as a basic investigation object. Realization of the task is performed with 3D Monte Carlo simulation of laser radiation propagation in multiple scattered media. Back scattering differential scheme is the technique in operation for numerical calculations results analysis. Used method adds up to compute a differential value of spectral backscattering density which may characterize a state of the irradiated tissue. In the paper we investigate the differential scheme opportunities. Results allow to determine differential backscattering intensity as the multiparametric function of media and heterogeneities features. The data are basic for diagnostic scheme software implementation.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):145-155
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Dissipative structures of the Gierer-Meinhardt model of morphogenesis in the stochastic field
Kurushina S.E.
Abstract

The conditions of soft excitation of Gierer-Meinhardt model dissipative structures in additive homogeneous isotropic Gaussian stochastic field have been analytically received. Numerical simulation of Gierer–Meinhardt system evolution has been carried out. It was shown that region and increment of instability is growing in stochastic field both on linear and nonlinear stages of structures evolution. It was received that real part of eigenvalues depends on intensity of fluctuation and some order of correlation radius, which defined by dimension of researched model.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):156-166
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A parallel algorithm in the cyclic counter-sweep method for a two-dimensional domain
Loganova L.V.
Abstract

Construction of a parallel algorithm in the cyclic counter-sweep method for solving band-type grid equations is discussed. A variant of the linear breakdown of the two-dimensional grid domain is considered. Comparison is made with the familiar algorithms, disadvantages and benefits of the algorithm under discussion are shown.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):167-174
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Solving the least squares problem using the method of an extended set of equations with sparse matrix
Gogoleva S.Y., Zoteeva O.V.
Abstract

The solution of the least squares problem is discussed. The proper least squares problem is formulated and solved using the straightforward projection method (SPM). We propose that it should be reduced to an equivalent problem of solving an extended set of linear equations (ESLE) using the corresponding SPM’s modifications. We compare the SPM and the normal equations method in terms of the RAM space utilized and the number of arithmetic operations needed. The use of the methods for the general sparse matrix is discussed and a table of comparative computational efforts is given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):175-178
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Solving the polynomial approximation problem with use of the iterative kachmazh method
Ivanov A.A.
Abstract

In this work, we describe a classical iterative Kachmazh method and a modification thereof using a relaxation parameter. We study at which rate the Kachmazh method with a relaxation parameter converges when applied to solving a least squares problem of large dimension. Recommendations are given for choosing the relaxation parameter in a particular case - when solving the problem of polynomial approximation of the experimental data in the least squares sense.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):179-182
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3D model didactic properties investigations for geometrical modeling principles training
Ivashchenko V.I.
Abstract

The text forth below contains the investigation results of the 3D electronic model didactic properties in the training project solution. Working of the “student – program – model” system is considered. The proposed principles are realized in the many-levels drawing and geometry training for the mechanical engineers.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):183-193
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Methods and models of autonomous control over Earth remote sensing spacecraft survivability
Akhmetov R.N.
Abstract

There considered detection methods of remote sensing spacecraft on board equipment abnormal functioning in real time, preventing methods of abnormal situation grow up to irreversible consequences, methods of automatic diagnosis of on board systems failures and their revival. There given results of autonomous analysis, diagnosis and further reconfiguration of spacecraft attitude position control loop.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):194-210
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Multi-time-step scheme in the vorticity splitting method applied to the simulation of the wake behind the flat plate
Nikonov V.V., Shakhov V.G.
Abstract

The Vorticity Splitting Method is applied to the simulation of the wake behind the longitudinal streamlined flat plate. Moreover the Multi-Time-Step Scheme is used in the numerical algorithm because the differences in the rates of convection and diffusion processes. The method is allowed results obtaining with fine accuracy in the wide range of Reynolds numbers.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):211-215
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An algorithm for extracting invisible information from scanned polygraphic products
Glumov N.I., Mitekin V.A., Sergeev A.V., Fedoseev V.A.
Abstract

We propose a steganalysis technique for the Invisible Personal Information algorithm intended for embedding digital watermarks (DWM) in polygraphic products and considered steganographically robust. The steganalysis technique in question involves two stages: first, out of the entire set of embedding keys a probable key subset is extracted and, then, the image is being prepared using each of the keys chosen so that a watermark can be discovered. Also, we investigate the robustness of the steganalysis algorithm relative to distortions due to printing and scanning of stegagrams with DWMs.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):216-220
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Development of the information technology for estimation of fundus image geometric parameters
Kuprijanov A.V., Ilyasova N.Y.
Abstract

This work deals with analysis of a class of images containing branches of tree-like structures. We propose a technology for estimating parameters of such structures, which is exemplified by the eye fundus blood vessels. We offer models of tree-like object images, a branch model, and a model of image brightness profile that enable a diagnostic feature set to be generated. Analysis of methods for vessel thickness estimation is conducted. We give a detailed description of the approximation methods for parameter estimation that rely upon the idea of the parametric approximation of brightness profile of an isolated image fragment of the vessel under study. Three different models of brightness profile are proposed for determining the vessel thickness parameter. A local fan transform method is described that enables one to identify the branch directions at arbitrary points of the fundus image. Experimental studies on test and natural images are discussed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):221-234
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Iris boundary detection using hough transform
Korepanov A.O.
Abstract

This work deals with method for localizing and estimating the iris characteristics in biometric eye images. A method is proposed for estimating boundaries by the second-order curves, which is based on a discrete Hough transform modification. An algorithm for iris localization in the diagnostic iris images is developed and implemented. The results of investigation of the iris characteristics estimation algorithm on natural diagnostic images are discussed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):235-239
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Iris image analysis using the Radon transform
Kuznetsov A.V., Kupriyanov A.V., Ilyasova N.Y.
Abstract

This work deals with looking into the possibilities of using the Radon transform for analysis of color images of iris. A technology for generating the feature vector using the Radon image constructed in HSL color space is developed. The features we propose in this work are shown to have high separability for different classes of iris images, which is of particular interest for biometrical identification purposes.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):240-244
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Texture image segmentation based on estimating the local statistical features
Kuprijanov A.V.
Abstract

This work is aimed at studying the efficiency of the features based on texture energy measures when solving the image segmentation problem. An algorithm for feature space generation based on the texture energy measures is proposed. The texture features are used for segmentation of diagnostic crystallogram images. Using test texture images, the segmentation quality is estimated and the feature efficiency is studied when solving the texture segmentation problem.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):245-251
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A model of Markov random field in texture image synthesis and analysis
Plastinin A.I., Kuprijanov A.V.
Abstract

We offer an algorithm for pattern-based simulation modeling of texture images using the Markov random field model. The results of experimental studies of the texture generation quality are discussed. Analysis of the experimental studies conducted suggests that the algorithm can be applied profitably to studies related to texture analysis.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):252-257
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A method for estimating morphological parameters of vessels in fundus images based on curve visibility matrix
Ananyin M.A., Ilyasova N.Y.
Abstract

We discuss an approach to fundus image analysis that enables one to modify the diagnostic vessel parameters in such a way that the morphological peculiarities of tree-like structures are accounted for. A feature estimation method based on processing the geometric characteristics of central vessel line lobes is described. An approach relying upon partitioning the curves into lobes with use of the algorithm of visibility matrix construction is discussed. The approach developed makes it possible to construct a primary feature space that can be used for constructing morphological features invariant to various types of geometric distortions.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):258-260
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Ecological monitoring of megapolis on the basis of differential backscattering control of the wood culture
Zakharov V.P., Makurina O.N., Timchenko E.V., Timchenko P.E., Kotova S.P., Valliulov R.V.
Abstract

The application of the differential backscattering method and the fluorescent analysis of wood cultures for the determination of ecological quality of different megapolis areas are investigated. The correlation of leaves optical characteristics with the data of the chemical analysis of leaves pigments concentration is shown on the basic of year statistical results of wood cultures spectral characteristics observation. It is experimentally found, that the method of differential backscattering allows to identify megapolis areas on their ecological level.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):261-271
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Creation of territorial complex, multistage system of monitoring and forecasting of extreme situations of natural, technogenic and biologo-social character for territories of the Samara area
Gabrichidze T.G., Fomin P.M., Yannikov I.M.
Abstract

The system of monitoring and forecasting of extreme situations of natural, technogenic and biologo-social character for territories of the Samara area is developed. The mechanism of gathering, processing and an information transfer for its estimation and acceptance of administrative decisions is described.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2008;7(2):272-280
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