Browsing ННІ Радіо, телебачення та інформаційної безпеки by Title

Now showing items 1-20 of 601

    • 3D IMAGE MESH ENTROPY CODING 

      Samus, N.S.; Osharovskaya, E.V.; Самусь, Н.С.; Ошаровська, О.В.; Самусь, Н.С.; Ошаровская, Е.В. (ОНАЗ ім. О.С. Попова, 2014)
      In this article we have introduced a compressed representation for triangular meshes. Because proximity in this vertex spanning tree often implies geometric proximity of the corresponding vertices, we can use ancestors ...

    • ADAPTIVE DECOMPOSION OF TV IMAGES 

      Gofaizen, O.V.; Гофайзен, О.В.; Гофайзен, О.В.; Osharovska, O.V.; Ошаровська, О.В.; Ошаровская, О.В.; Patlayenko, M.O.; Патлаєнко, М.О.; Патлаенко, Н.А.; Pyliavskyi, V.V.; Пілявський, В.В.; Пилявский, В.В. (UkrMiCo, Odessa, 2017)
      The paper presents the results of modeling adaptive decomposition for ultra-high definition television, which provides image compression without subjective deterioration of quality. The decomposition of the images was ...

    • ANALYSIS AND COMPARISON OF CONNECTIVITY AND GEOMETRY MESH COMPRESSION IN 3D OBJECTS 

      Samus, N.S.; Самусь, Н.С. (ОНАЗ ім. О.С. Попова, 2017)
      In this article the different connectivity and geometry compression algorithms of 3D objects were analyzed and compared. Mesh connectivity is completely unknown to the encoder before the compression. Face Fixer, Edgebreaker ...

    • ANALYSIS OF EQUIVALENT APERTURE OF CURVILINEAR ANTENNA ARRAYS 

      Protsenko, M.B.; Iaremenko, A.A.; Проценко, М.Б.; Яременко, А.А. (ОНАЗ ім. О.С. Попова, 2014)
      The article presents the results of the analysis of equivalent aperture of curvilinear antenna arrays on the basis of the obtained mathematical models. The equivalent aperture of the curvilinear antenna array is a projection ...

    • THE APPLICABILITY OF PID-CONTROLLERS TO THE LOUDSPEAKERSWITH AN ELECTROMECHANICAL FEEDBACK 

      Сулима, Н.Н.; Суліма, М.М.; Sulima, N.N. (ОНАЗ ім. О.С. Попова, 2013)
      In this paper, a preliminary analysis of the possibilities of application of PID controllers for management under coverage loudspeaker electromechanical feedback (MFB). It is shown that for certain classes of MFB use PID ...

    • CLASSIFICATION OF THE METHODS OF EAVESDROPPING AND DATA CORRUPTION IN QUANTUM CRYPTOSYSTEM 

      Limar, I.V.; Лімарь, І.В.; Лимарь, И.В.; Vasiliu, E.V.; Васіліу, Е.В.; Василиу, Е.В.; Kumysh, V.Yu.; Кумиш, В.Ю.; Кумиш, В.Ю. (ОНАЗ ім. О.С. Попова, 2018)
      The new extended classification of the attacks on quantum protocols and quantum cryptosystems is proposed. The classification takes into account the newest data concerning the attacks on the equipment for quantum key ...

    • COHERENT DETECTION OF TWO-DIMENSIONAL DIGITAL MODULATION SIGNALS 

      Оryabinskaya, О.А.; Rozenvasser, D.M.; Орябінська, О.О.; Розенвассер, Д.М.; Орябинская, О.А.; Розенвассер, Д.М. (ОНАЗ ім. О.С. Попова, 2018)
      Two-dimensional digital modulations require coherent detection to eliminate phase uncertainty. The main problem is that it is necessary to exactly match the frequencies and initial phases of the carrier and reference ...

    • COLOR SPACES OF VIDEO SEQUENCES DIGITAL CODING SYSTEMS 

      Gofaizen, O.V.; Pilyavskiy, V.V.; Гофайзен, О.В.; Пилявский, В.В.; Гофайзен, О.В.; Пилявський, В.В. (ОНАЗ ім. О.С. Попова, 2016)
      In the work it is built generalized description and comparison of color spaces defined by standards for digital encoding of video sequences MPEG-2 Video, MPEG-4 Visual, MPEG-4 AVC and MPEG-H HEVC taking into account the ...

    • COLOUR APPEARANCE METRIC FOR USE IN VIDEO APPLICATIONS 

      Gofaizen, O.V.; Pilyavskiy, V.V.; Гофайзен, О.В.; Пилявський, В.В.; Гофайзен, О.В.; Пилявский, В.В. (ОНАЗ ім. О.С. Попова, 2017)
      The article presents a description of the new CAM16 color appearance model developed by the CIE to replace the currently acting model CIECAM02, improved with respect to the correctness of the algorithm for its ...

    • A COMPUTATIONAL STUDY OF THE EFFECTIVE THREE-ION INTERACTION POTENTIALS IN LIQUID METALS WITH A HIGH DENSITY OF ELECTRON GAS 

      Vasiliu, E.V.; Васіліу, Є.В.; Василиу, Е.В. (Львівський національний університет ім. Івана Франка, 2003)
      Based on the many-body theory of metals in the third order of the perturbation expansion in electron-ion interaction pseudopotential, the potentials of pair and three-ion interactions are calculated in liquid lead, aluminium ...

    • CONSTRUCTION OF EQUIDISTANT GRID IN UNIFORM COLOR SPACE, UNIFORMLY FILLING COLOR GAMUT TRANSMITTED AND REPRODUCED BY TELEVISION SYSTEMS 

      Гофайзен, О.В.; Пилявский, В.В.; Гофайзен, О.В.; Пилявський, В.В.; Gofaizen, O.V.; Pilyavskiy, V.V. (ОНАЗ ім. О.С. Попова, 2013)
      A method of constructing a grid of colors in uniform space that uniformly fills color gamut transmitted and reproduced by television systems. Coordinates and position of the mesh of colors in color spaces CAM02-USC, CIECAM02 ...

    • CONSTRUCTION OF POLAR COORDINATES GRID IN UNIFORM COLOR SPACE, UNIFORMLY FILLING AREA OF EXISTING COLORS, PARTICULARLY OF COLOR GAMUT TRANSMITTED AND REPRODUCED BY TELEVISION SYSTEMS 

      Гофайзен, О.В.; Гофайзен, О.В.; Gofaizen, O.V.; Пилявский, В.В.; Пілявський, В.В.; Pilyavskiy, V.V. (ОНАЗ ім. О.С. Попова, 2015)
      A method of constructing polar coordinates grid in uniform color space, uniformly filling area of existing colors, particularly of color gamut transmitted and reproduced by television systems, is proposed. Coordinates and ...

    • EFFICIENCY OF PARTLY ERRORS CORRECTION IN ARQ DTS BASED ON TIMER SIGNAL CONSTRUCTION 

      Захарченко, Н.В.; Хомич, С.В.; Белова, Ю.В.; Севастев, Е.А.; Захарченко, Н.В.; Хомич, С.В.; Сєвастєєв, Е.О.; Zakharchenko, N.V.; Homich, S.V.; Belova, Yu.V.; Sevasteev, E.A. (ОНАЗ ім. О.С. Попова, 2014)
      Розроблено метод передавання на базі систем з вирішальним зворотнім зв’язком та таймерних сигнальних конструкцій з корегуванням частини помилок інтервалу «хорошого» стану рівнянням якості. Визначені граничні умови його ...

    • EFFICIENCY STUDY OF ALGORITHMS APPLIED IN DVB-T/ DVB-T2 SYSTEMS AT PRESENCE OF PHASE NOISE 

      Баляр, В.Б.; Balyar, V.B. (ОНАЗ ім. О.С. Попова, 2014)
      In article study results in direction of efficiency estimation of algorithms used in DVB-T/ DVB-T2 systems at presence of phase noise with parameters defined in DSTU ETSI TR 101 290. Obtained estimations will be used as ...

    • FOURIER ANALYSIS OF THE TEXTURE OF HIGH-DEFINITION IMAGES 

      Osharovskaya, E.V.; Ошаровська, О.В.; Ошаровская, Е.В.; Patlayenko, N.A.; Патлаєнко, М.О.; Патлаенко, Н.А.; Pyliavskyi, V.V.; Пілявський, В.В.; Пилявский, В.В. (Львівський національний університет ім. Івана Франка, 2018)
      This paper presents the results of measuring the signal-to-noise ratio at the boundary of object contours in highdefinition images after compression of the original digital stream based on the Fourier transform and the ...

    • FRACTAL CODING OF VIDEO SEQUENCES BY GENETIC ALGORITHM 

      Osharovskaya, E.V.; Patlaenko, N.A.; Ошаровська, О.В.; Патлаєнко, М.О.; Ошаровская, Е.В.; Патлаенко, Н.А. (ОНАЗ ім. О.С. Попова, 2017)
      The results of application of the modified genetic algorithm of fractal coding to still images and video sequences are presented. The dependence of the compression coefficient on the size of the rank block is obtained. ...

    • GENERAL INDIVIDUAL ATTACK ON THE PING-PONG PROTOCOL WITH COMPLETELY ENTANGLED PAIRS OF QUTRITS 

      Vasiliu, E.V.; Васіліу, Є.В.; Василиу, Е.В. (Cornell University, 2009)
      The general individual (non-coherent) attack on the ping–pong protocol with completely entangled pairs of three–dimensional quantum systems (qutrits) is analyzed. The expression for amount of the eavesdropper’s information ...

    • THE INCREASE OF TRANSMISSION PROTECTION BASED ON MULTIPLEXING OF TIMER SIGNAL CONSTRUCTIONS 

      Korchinsky, V.V.; Kildishev, V.I.; Osadchuk, K.O.; Корчинський, В.В.; Кільдішев, В.Й.; Осадчук, К.О.; Корчинский, В.В.; Кильдишев, В.Й.; Осадчук, Е.А. (ОНАЗ ім. О.С. Попова, 2018)
      In the article the method for increasing the security of confidential information transmission based on multiplexing of timer signal structures is addressed. The feasibility of this study is justified by the need to ...

    • MATCHING OF SOME COLOR SPACES FOR USE IN DIFFERENT INDUSTRIES AND COLOR SPACES OF TELEVISION SYSTEMS 

      Gofaizen, O.V.; Pilyavskiy, V.V.; Гофайзен, О.В.; Пилявський, В.В.; Гофайзен, О.В.; Пилявский, В.В. (ОНАЗ ім. О.С. Попова, 2013)
      The comparison of the colorimetric characteristics of the systems used in different color image industries, such as digital television systems of high and ultrahigh-definition, digital photo printing systemы RIMM-ROMM and ...

    • THE METHOD OF DETERMINATION BOUNDARIES IN UNIFORM COLOR SPACE OF COLOR GAMUT TRANSMITTED AND REPRODUCED BY TV AND OTHER IMAGING SYSTEMS 

      Гофайзен, О.В.; Пилявский, В.В.; Гофайзен, О.В.; Пилявський, В.В.; Gofaizen, O.V.; Pilyavskiy, V.V. (ОНАЗ ім. О.С. Попова, 2014)
      A method of definition color gamut, transmitted and reproduced by TV systems and by other video applications, built on the basis of use of the additive colorimetry. Представлен метод построения области цветов, передаваемых ...