National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Konstrukční úpravy dataprojektoru pro optická 3D měření
Pochmon, Michal ; Pravdová, L. ; Rössler, T.
Optical profilometric and topographic non-coherence measurements have a great use today, for example in deformation measurement, product quality control, total arthroplasty wear measurement and many others. These measurements are based on using optical structure, which is projected on the measured object and is deformed by its surface. Good projector of such optical structure is data-projector. Its imperfection is too large zoom of serial objective, so measurement of small objects is influenced by quite big measurement error. This is caused by projecting only small part of optical structure is projected on measured object and that negative influences resolution of measurement method. For the measurement of small objects is necessary replace the serial objective by objective, whom parameters allow the measurement of this object influenced by the measurement error as small as possible.
Měření otěru kyčelního implantátu metodou Fourierovské profilometrie s užitím postupného vykreslení mřížky
Pochmon, Michal ; Rössler, T. ; Mandát, Dušan ; Hrabovský, Miroslav ; Gallo, J.
Contribution is focused on possibility of using Fourier profilometry for measuring of the abrasion of cotyle implant, which is caused by using in the patient´s body. The projected optical structure in Fourier profilometry is sinusoidal pattern. The results showed, that sinusoidal pattern is not optimal optics structure to get sufficiently precise results. Instead of it, the linear pattern made by sequential drawing of linear strips can be used.
Materiology of mouldings for automobile industry
Mandát, Dušan ; Pech, Miroslav ; Hrabovský, Miroslav ; Pochmon, Michal ; Rössler, T.
This article treats of optical methods, that investigate defect of mouldings designed for automobile industry. We use simple optical system and image processing algorithm to measure surface deformation. The sources of defect usually are: scratch, bulge, grey, bristle etc.

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