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Use of focus stacking and SfM techniques in the process of registration of a small object hologram

Chinese Optics Letters 2020年第6期18卷 19-23页

作者： Sławomir Pasko Marek Sutkowski ramunas bakanas Institute of Micromechanics and Photonics Warsaw University of Technology02-525 WarsawPoland 2Institute of Microelectronics and OptoelectronicsWarsaw University of Technology00-665 WarsawPoland 3Geola Digital uab.Vilnius 03227Lietuva

In this Letter,a method for shape visualization of small objects(microscopic)in the form of a hologram is *** consists of a standard optical set-up for small object registration(i.e.,stereoscopic or biological microscope).The focus stacking technique is used to obtain a series of images with increased depth of field and on them a shape reconstruction procedure(structure from motion,SfM)is *** use of a dense cloud of points,a sequence of parallax-related images suitable for Geola’s digital holographic printing is *** holographic printer produces single-parallax holographic(full three-dimensional)images of real or virtual objects.

关键词： digital holography three-dimensional image acquisition photography

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Implementation of the Concept of Buildings Stability Monitoring in the Project STATIMON： Theoretical and Practical Results

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Journal of Mechanics Engineering and Automation 2013年第2期3卷 99-106页

作者： Vitalijus Volkovas Marij a Eidukeviěiūtè ramunas Gulbinas Kazimieras Petkeviěius Aurimas Rugaitis Saulius Slavickas Technological Systems Diagnostics Institute Kaunas University of Technology Kaunas LT-44312 Lithuania Department of Theoretical Mechanics Kaunas University of Technology Kaunas LT-44312 Lithuania

In the framework of the STATIMON project, the complex research was done in which mathematical models of buildings＇ construction were created, defects identification method developed and also monitoring concept was composed according which automated monitoring system and software prototypes and structures were implemented. The strategic aim of the development of buildings＇ monitoring system was realized by mathematical and physical modelling of the faults （defects）; analysis of characteristics sensitive to defects; selection of stability parameters and measurements; creation of automated system prototype; investigation of the methods applied for the monitoring system and diagnostics; development of software and separate elements of the system and approbation of the whole complex. Thorough evaluation of the technical state of the buildings numerical is executed using physical models and natural objects which support reliable state identification of the building and also helps to track changes.

关键词： Building stability monitoring defect diagnostics.

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