Augmented Reality based on Planar Object and Local Image Features

Tato bakalářská práce se zabývá tvorbou aplikace s prvky rozšířené reality umožňující mapování rovinného objektu a následnou lokalizaci pozice kamery nad tímto modelem s možností dokreslování dalších informací do obrazu. Podrobně jsou rozebrány postupy používané při skládání obrazů pomocí lokálních příznaků, které jsou základními technikami využívanými při tvorbě aplikací pracujících s rozšířenou realitou. Práce se dále zaměřuje na návrh a implementaci takové aplikace.This bachelor's thesis deals with creating an augmented reality application which allows mapping of planar object and camera position localization with possibility of rendering additional information into the picture. Procedures used in image stitching process using local features are described in detail. These are the fundamental techniques for creating augmented reality applications. The thesis focuses on designing and implementation of such an application.

Generation of Skin Disease into the Synthetic Fingerprints

Diplomová práce se zabývá návrhem a implementací nástroje, s jehož pomocí je možné simulovat stopy konkrétních onemocnění kůže v umělém otisku prstu. Vybraná onemocnění pro tuto práci jsou bradavice a atopický ekzém. Generování známek onemocnění probíhá do umělého otisku vytvořeného aplikací SFinGe. Existující otisky prstů s onemocněním z databáze STRaDe jsou analyzovány, následně jsou navrženy postupy pro simulaci konkrétních onemocnění do umělého otisku prstu, ty jsou implementovány a výsledek je vyhodnocen.The thesis deals with design and implementation of a tool for simulating marks of chosen skin diseases into a synthetic fingerprint. The diseases selected to work with are warts and atopic eczema. The marks of diseases are generated into a synthetic fingerprint image created by the SFinGe application. Existing disesase-affected fingerprints from the STRaDe database are analysed in detail. Then, methods for simulating the diseases into a synthetic fingerprint are proposed, implemented, and the results are evaluated.

Weld joints fatigue properties of thin carbon steel sheet treated by nitrooxidation

Nisko ugljični čelik DC 01 (EN 10130-91) obrađen postupkom nitrooksidacije značajno je povećao mehanička svojstva kao i otpornost na atmosfersku koroziju. To je povećanje nastalo zbog postojanja površinskih nitridnih i oksidnih slojeva. Do sada su predlagani odgovarajući postupci zavarivanja za tako obrađivane čelične limove, od kojih se zavarivanje čvrstog tijela laserskim snopom (solid-state laser beam welding) smatralo najpogodnijim. Cilj je ovoga rada bio odrediti zamorna svojstva laserom zavarenih spojeva materijala obrađenog nitrooksidacijom. Provedena je i fraktografska analiza. Ispitivanja na zamor su se provodila kod opterećenja pri savijanju s frekvencijom od 20 kHz i sinusoidalnim simetričnim ciklusom. Rezultati su dokazali da se postupkom nitrooksidacije značajno poboljšavaju zamorna svojstva zavarenih spojeva.Low carbon steel DC 01 (EN 10130-91) treated by the process of nitrooxidation significantly increased its mechanical properties as well as the resistance to atmospheric corrosion. The high increase was due to the presence of the surface nitridic and oxidic layers. Previous outcomes dealt with suggesting a suitable welding method for steel sheets treated in this way, the solid-state laser beam welding being marked as the most suitable. The aim of this paper was to determine the fatigue properties of laser beam welded joints of material treated by nitrooxidation. The fractographic analysis was carried out as well. The fatigue tests were carried out under bending load with frequency of 20 kHz and sinusoidal symmetric cycle. The results proved that the process of nitrooxidation had a great positive effect on the weld joints ultimate fatigue properties

Material Characteristics of Low Carbon Steel Sheets Treated by Nitro-Oxidation in Fluid Environment

The paper deals with a detailed analysis of deep drawing DC 01/DIN EN 10130-9 steel sheets of 1 mm in thickness treated by nitro-oxidation in fluid environment. The nitridation at 580°C/45 min and oxidation at 350°C/5 min was used. The surface Fe3O4 and Fe2O3 oxide layer, as well as the presence of Fe2-3N, γ\u27- Fe4N nitrides and ferritic matrix, was proved by X-ray diffraction. The Fe2-3N nitrides formed a continuous ε-phase of 7,1 μm in thickness with the microhardness 6,5 times higher than the base material. Corrosion resistance test revealed the highest level according to STN EN ISO 10286/C standard in comparison to the non-treated material. Analysis of mechanical properties showed a significant increase of tensile strength. Ductility decreased approximately by 7,5 %. Erichsen cupping test showed a 15 % decrease of Erichsen cupping index. Fukui deep-drawing test of nitro-oxidised steel exhibited 1,5 % increase of "m" deep-drawing coefficient

Inaccuracies of industrial robot positioning and methods of their correction

Primjena proizvodnih linija bez uporabe robota u teškim, monotonim, nezdravim ili visoko preciznim radovima ne samo da je neučinkovita i nehumana već je i ekonomski neprofitabilna. Primjena robotike u proizvodnim procesima stoga je potrebna kako bi se osigurala visoka produktivnost proizvoda zadovoljavajuće kvalitete i garantiranog ponavljanja u proizvodnji. U radu se ukazuje na netočnosti u pozicioniranju ruke robota ovisno o rotaciji osovine robota, brzini zavarivanja i predviđenoj putanji. Robot Fanuc M-710iC/50 pokazao je najveće netočnosti kod kretanja brzinom od 50 mm/s.The application of production lines without the use of robots in heavy, monotonous, unhealthy or high-precision works is not just ineffective and inhumane but also economically unprofitable. The use of robotics in manufacturing processes is therefore necessary to ensure high productivity of products having satisfactory quality and guaranteed repeatability of production. The article points out inaccuracies in positioning the robotic arm tool depending on the robot axes rotation, welding speed and predefined trajectory shape. Fanuc M-710iC/50 robot showed biggest inaccuracies in movement speed of 50 mm/s

The Influence of Surface Roughness on Laser Beam Welding of Aluminium Alloys

A laser beam is the light that is subject to the laws of physics. Surface roughness can cause that the light can be reflected in different angles. Therefore, the surface roughness may influence the amount of light to be reflected so the power of the laser could be lowered. Present paper analyses the influence of different surface roughness on porosity and geometry of weld joint using design of experiment. Surface roughness monitored during the experiment was in the range from Ra 0.8 to Ra 15 achieved and by machining on aluminium-lithium alloy AW2099. In order to keep the same condition for welding the bead on plate welds were realised. Porosity was analysed using computer tomography. Surface roughness proved to have minor influence on porosity as well as the shape of the weld joint

Fatigue properties of weld joint of steel sheets treated by PLASOX process

Rad se bavi svojstvima zamora zavarenih spojeva tankih čeličnih limova DC01 kao i svojstvima zamora zavarenih spojeva čeličnih limova DC01 obrađenih PLASOX postupkom, kojeg je patentiralo poduzeće RÜBIG. Svojstva zamora tih čeličnih ploča dosljedno su konfrontirana svojstvima zamora tih materijala bez zavara. Čelični limovi su zavareni laserskim vlaknom TruFiber 400. Probe na zamor materijala provedene su pod opterećenjem zbog savijanja s frekvencijom od 20 kHz na ultrazvučnom stroju KAUP-ZU. Na puknutim površinama provedena je fraktografska analiza kako bi se odredio mehanizam loma. Rezultati su dokazali da je plazma nitrooksidacija postupka PLASOX pozitivno djelovala na vijek trajanja do zamora zavarenih spojeva.The paper deals with the fatigue properties of weld joints of thin steel sheets DC01 as well as the fatigue properties of weld joints of steel sheets DC01 treated by the PLASOX process, which is patented by RÜBIG company. Fatigue properties of these steel sheets were consequently confronted with the fatigue properties of these materials without weld. Steel sheets were welded by fibre laser TruFiber 400. Fatigue life tests were carried out under bending load with frequency of 20 kHz on ultrasonic fatigue machine KAUP-ZU. On the fractured surfaces the fractographic analysis was carried out to determine the mechanism of rupture. The results proved that plasma nitrooxidation by PLASOX process had a positive effect on fatigue life of weld joints

Metoda a ekonomické limity regulace ve finančním právu

Hlavním cílem práce bylo identifikovat metodu regulace ve finančním právu a pojednat o jednotlivých oblastech finančního práva. Dalším cílem bylo vybrat základní ekonomické instituty, kterých stát užívá při plnění svých funkcí nebo které ovlivňují svojí regulací. Třetím cílem bylo určit sociologické metody, konkrétně metody kvantitativního a kvalitativního výzkumu, které lze využít při úvahách de lege ferenda. Publikace je výstupem dvouleté výzkumné činnosti v projektech specifického výzkumu Masarykovy univerzity Metoda a ekonomické limity regulace ve finančním právu (2012) a Metoda a ekonomické limity regulace ve finančním právu II (2013).The main goal of the work has been to identify the method of legal regulation in financial law relations and to discuss certain segments of financial law. The second goal has been to select the basic economic institutes used by the state for fulfilling its tasks or affected by the state through its regulation. The third goal has been to assess the sociological methods including the methods of the quantitative and qualitative research that may be used for de lege ferenda discussions. The publication is the output of the two-years research activities in the specific research projects Method and economic limits of regulation in financial law (2012) and Method and economic limits of regulation in financial law II (2013)