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Palm liveness detection and identification
Kala, Adam ; Goldmann, Tomáš (referee) ; Sakin, Martin (advisor)
This bachelor's thesis is focused on the detection of liveness of the human hand and its identification from multispectral images. The main goal of the work is the recognition of a living hand and its forgeries based on the information we have obtained, the finding of minutiae for palm identification and their use. The work describes techniques for cropping the area of interest, extracting characteristic features from the palm, and subsequent detection of liveness and identification of the person. Liveness detection success reached over 90% and person identification with a False Acceptance Rate (FAR) of less than 2% for selected datasets.
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Characterization of cytotoxic effect of combined antimicrobial nanomaterials
Kozlíčková, Hana ; Fialová, Lenka (referee) ; Márová, Ivana (advisor)
This thesis deals with the study of the effects of combined nanomaterials on human skin cells. Pure antimicrobial substances, two types of liposomes enriched with antimicrobial substances, nanofibers with antimicrobial substances and, finally, four types of combined nanomaterials were analyzed from the point of view of cytotoxicity. The analysed active substances were eugenol, thymol, cavarcrol, curcumin, vitamin E and the antibiotics streptomycin and ampicillin. In the theoretical part of the work, the cell line of human keratinocytes, used in the experimental part of the work for cell tests, was characterized. Furthermore, individual active substances with an antimicrobial effect were described and the principles of biological effects were described, which include antimicrobial, antioxidant, cytotoxic and synergistic effects. Additionally, the theoretical part described individual nanomaterials, their preparation and usage in cosmetics and medicine. The experimental part was based on the characterization of prepared nanomaterials and on testing the influence of individual antimicrobial substances on the proliferation and viability of human HaCaT cells. Using the DLS method, the size of the prepared liposomes was measured and the effect of PHB and the type of active substance on their size was studied. MTT and LDH tests were chosen to test the cytotoxicity of individual substances. Furthermore, a scratch test was performed to monitor the effect of the investigated substances on proliferation and the rate of wound healing by cells. The last performed tests were immune response assays, in which were tested the samples for production of the human anti-inflammatory cytokines IL-6 and IL-8. In experimental part of this thesis, it was found that the prepared nanofibrous materials are safe for use in healthcare or cosmetics and, in the future, suitable to produce nanofibrous wound coverings enriched with antimicrobial substances, which can give them exceptional properties.
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Liveness Detection of a Hand
Vanický, Jozef ; Kanich, Ondřej (referee) ; Sakin, Martin (advisor)
This thesis solves the security problem of biometric systems which uses biometric data of a hand. It focuses on the absence of liveness detection during verification of a sample by the biometric system. In result this thesis offers to extend the contactless biometric systems by a system of liveness detection, which utilizes specific properties of human skin and its reactions to certain wavelengths of the visible spectrum of electromagnetic radiation. Reactions of the skin on the specific wavelengths of visible spectrum are analyzed and compared with the reactions of inorganic materials which imitates the hand. Outcome of this thesis is a design and implementation of a liveness detection algorithm, which can, based on the analysis of a set of photographs of the human palm, which was exposed to four wavelengths of a visible part of the electromagnetic spectrum, successfully recognize a hand from a counterfeit with an average accuracy rate of 82.20 %.
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Reinforced concrete structure of the cooling tower
Vostal, Lukáš ; Švaříčková, Ivana (referee) ; Šulák, Pavel (advisor)
The content of the bachelor thesis is structural analysis of cooling tower fundamental construction. Modeling of the computational model and the calculation of internal forces of cooling tower fundamental construction in Scia Engineer. The reinforced concrete parts of the structure are assessed at the ultimate limit state and the subsoil is assessed at serviceability limit state. Part of the thesis is also the desing of the reinforcement of the foundation structure and processing of the drawings.
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Extraction of Features from the Palm for Identification of Persons
Pricl, Patrik ; Kanich, Ondřej (referee) ; Sakin, Martin (advisor)
The work deals with the identification of persons using the palm. The specific properties of the skin and blood vessels are used. The response of the skin and blood vessels to electromagnetic radiation is used to capture these properties. Gabor's filter is used to extract skin properties. The LLBP algorithm is used to extract the veins. It uses the Hamming distance, the Euclidean distance and the K-nearest neighbor algorithm to compare properties.
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Construction parts and Elements of the of Large transport aircraft Fuselage structure
Zubaľ, Filip ; Dubnický, Lukáš (referee) ; Juračka, Jaroslav (advisor)
Fuselage design is an area of aerospace engineering that combines aerodynamics with mechanical and material engineering. Many factors affect the construction and design of the fuselage. The bachelor thesis is focused on the processing and systematic ordering of individual structural units used in large transport aircraft. It points out the diversity of individual structural nodes in the design of the aircraft. The work is divided according to sections of the fuselage, where the specific design solutions for the node are then discussed. At the end of the work, I present a comparison of the two most famous competing aircraft models of Airbus and Boeing company. I pointed out the individual combinations of structural elements. Compared data are processed using tables and schematic figures. The bachelor thesis was also translated into a form of presentation intended for educational purposes.
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Skin resist and psycho-galvanic reflex
Trávníčková, Hana ; Bubník, Karel (referee) ; Chmelař, Milan (advisor)
The aim of this bachelor’s thesis was to clarify the phenomenon called psychogalvanic reflex, describe mechanism of its origin, its affects and use in practice. It analyzes the structure of the skin and its properties in terms of conducting electrical current, describes the phenomenon itself and discusses the conditions for its measurement. The practical part is devoted to the concept and realization of a simple psychogalvanometer. This device is connected with PC and acquired signal is processed by LabView.
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Dynamic electroneurostimulation and electrical properties of skin
Špeta, Marek ; Dvořák, Petr (referee) ; Špinka, Jiří (advisor)
The focus of this diploma thesis is on theoretical basics of dynamic electroneurostimulation, which is an effect of electrical signal on acupuncture points of skin. This technology is used in devices made by russian DiaDENS company. Practical part of this thesis covers design of human skin impedance model. Especially derivation from three-element Cole-Cole model. Elementary, there is design of equivalent circuit of constant phase element and its incorporation into circuit. Then this circuit is designed, simulated and produced. Resulting product is used as a load to measure the characteristics of the DiaDENS device.
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Realization of fingerprint scanner
Kovář, Martin ; Sekora, Jiří (referee) ; Mézl, Martin (advisor)
This master’s thesis deals with the issue of scanning human fingerprints, which is currently very topical and represents the most widespread biometric technology. The theoretical part of the work acquaints the reader with basics of dactyloscopy and biometrics and concerns technologies used for fingerprinting, image preprocessing methods and commercially available contactless optical scanners. The practical part is a realisation of a contactless optical scanner based on a Raspberry Pi minicomputer, implementation of preprocessing algorithms in Python and testing of the device from the perspective of image quality.
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Anti-aging cosmetics - latest activ substances of natural origin
Fleková, Andrea ; Vítová, Eva (referee) ; Souralová Popelková, Miriam (advisor)
The present diploma thesis is focused on the selected anti-aging substances in cosmetic products. The literature research provided us with the knowledge of essential skin characteristics and factors influencing the aging process. Furthermore, the thesis describes the basic physical forms of cosmetic products, the basic cosmetic materials and the current trends in the usage of anti-aging substances. The experimental part subsumes altogether four physical forms of cosmetic products – tonics, serums, masks and creams. In this work was testid a new anti-aging compound, developer by French company SOLABIA, which provided the company Miša a Harašta s.r.o. (M+H). It has tested four components: Fucogel, Camaderm Gly, Viniderm and Omega Ceramid. These anti-aging substances were addend to the four technology cosmetic form, which were prepared in our laboratory. Subsequently, the pH stability of the products was measured together with the rheological measuring and skin hydration measuring. All of the samples proved to be pH stable. The highest stability of viscosity and consistence was identified for masks and creams. It was found out that the added anti-aging substances have no impact on the stability of pH, viscosity and consistency. The skin hydration measuring proved that the anti-aging substances Vinidem and Camadem Gly have the greatest moisturising qualities.
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