MEASUREMENT OF THE VELOCITY OF HILBERT-VISUALIZED PHASE STRUCTURES BY THE METHOD OF EMULATION 2D SPATIAL FILTERING OF THEIR IMAGES
Yu. N. Dubnishchev1,2,3, V. V. Sotnikov1,2,3, V. A. Arbuzov1,2,3, E. V. Arbuzov2,4, A. A. Shibaev1,3
1Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, prosp. Akademika Lavrent'eva, 1, Novosibirsk 630090
2Technological Design Institute of Scientific Instrument Engineering, Siberian Branch, Russian Academy of Sciences, ul. Russkaya, 41, Novosibirsk 630058
3Novosibirsk State Technical University, prosp. K. Marksa, 20, Novosibirsk 630073
4Sobolev Institute of Mathematics, Siberian Branch, Russian Academy of Sciences, prosp. Akademika Koptyuga, 4, Novosibirsk 630090
Keywords: измерение поля скорости, эмуляция динамической пространственной фильтрации изображений, гильберт-визуализация фазовых структур, термогравитационная конвекция, velocity field measurement, emulation 2D spatial filtering of images, Hilbert-visualized phase structures, thermogravitational convection
Abstract
A method of measuring the velocity of phase structures by means of emulation 2D spatial filtering of their images formed on the matrix of a digital camcoder is discussed. As an example, visualized fields of the phase optical density in convective flows induced in a high-viscosity fluid are considered. Investigations of this kind of flows are useful for simulating the Earth's mantle behavior at large depths.
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