|
|
Processing of iris images for biometric applications
Osičková, Kristýna ; Drahanský, Martin (referee) ; Kolář, Radim (advisor)
Biometrics is a method of recognizing the identity of a person based on unique biological characteristics that are unique to each person. The methods of biometric identification is currently becoming increasingly widespread in various sectors. This work is focused on the identification of a person by iris images. The introductory section describes the principles of the well-known methods for biometric applications and the next part describes the design method and its implementation in Matlab. In the practical part, fast radial symmetry method is used for detection of pupil, from which it derives further image processing. Two dimensional discrete welvet transform is used here. The proposed algorithm is tested on databases CASIA-Iris- Interval and database IITD.
|
|
|
Range measurement in wireless networks
Zikmund, Lukáš ; Šimek, Milan (referee) ; Morávek, Patrik (advisor)
This bachelor thesis is focused on possibilities of distance measurement in wireless sensor networks. It describes various methods, compares their advantages and disadvantages and their potential applications in the real world. A part of this work presents a real measurement using product solution Cricket and IRIS. It compares their advantages and disadvantages and applicability in the real environment.
|
|
|
Descriptor lists for irises, peonies and daylilies in the Průhonice Botanic Garden
Sekerka, Pavel ; Blažek, Milan ; Blažková, Uljana ; Caspers, Zuzana ; Macháčková, Markéta ; Fáberová, I. ; Papoušková, L. ; Matiska, P. ; Koudela, M.
In 2015, the Council of Plants Genetic Resources agreed to include genus Hemerocallis (daylily) and genus Paeonia (peony) into the collections of genetic resources of the National Program. In addition to the selection of plants suitable for the National Program, we started to prepare descriptor lists for these genera in cooperation with students of the Department of Horticulture Faculty of Agrobiology, Food and Natural Resources Czech University of Life Science, Prague. The descriptor list was supposed to cover botanical characteristics of wild species as well as the advanced garden ornamental varieties, because the species of peonies and daylilieas are medicinal plants and it is therefore appropriate to incorporate them in the National Program. At the same time, it turned out that the descriptor list used for Iris is intended primarily for bearded irises (Iris subgen. Iris). However, in the last twenty years, the Czech breeders have specialized also in other groups of irises, especially in Siberian and Japanese irises and Spuria group, which don’t have any beard on outer tepals and have other differerent characteristics from the subgenus Iris. Therefore, we have decided to extend the existing descriptor list to cover the whole genus except bulb irises.
|
|
|
Diversity of iris coloration during evolution of geckos (Gekkota)
Ozerskyi, Serhii ; Brejcha, Jindřich (advisor) ; Šmíd, Jiří (referee)
Iris is an anatomical structure that performs the function of a diaphragm in the visual system of the eye. It usually occupies most of the visible part of the eye. In addition to the main function - not to let light pass by the pupil, iris can play many different roles due to the great variability of its coloration. Iris can be part of a camouflage or aposematic color, play a different role in intra- or interspecific communication. In some species, its color changes depending on age, season, biological cycles, or even quickly become marked in response to stimuli. Geckos (Gekkota) are distinguished by a particularly large variety of iris color. And in many of them, the iris pattern resembles branching veins. What significance and evolution history this pattern has is of interest. I used various models of evolutionary reconstruction in the R program to study the evolution of veined pattern of coloration of the iris, as well as phylogenetic comparative methods and binary character evolution model to identify its connections with the fusion of life and the contrast in brightness between the eye and the eye ring. It was revealed that the veined pattern is an ancestral condition for geckos and is present in most modern species. Most precisely, the evolution of the vein pattern is described by all rates different...
|
|
|
Solar irrigation
Straňák, Rastislav ; Jaššo, Kamil (referee) ; Jandová, Kristýna (advisor)
This bachelor thesis deals with the issue of solar irrigation system together with the design and manufacture of the owner´s solution. The beginning of the thesis deals with the analysis of commercial equipment, determining its possible innovations. It continues with the analysis and selection of individual components for author´s solution. Newly designed device has a microcontroller that evaluates data from the relevant components, thus controlling the system processes. Thanks to the protection against self-destruction caused by running out of water or clogged hoses, the protection of plants against overwatering and the additive function of fertilization, i tis a compact solar irrigation system. The last part deals with the testing of the created equipment and the analysis of the achieved results.
|
|
|
Samoopravné kódy a rozpoznávání podle duhovky
Luhan, Vojtěch ; Šťovíček, Jan (advisor) ; Drápal, Aleš (referee)
Iris recognition constitutes one of the most powerful method for the iden- tification and authentication of people today. This thesis aims to describe the algorithms used in a sophisticated and mathematically correct way, while re- maining comprehensible. The description of these algorithms is not the only objective of this thesis; the reason they were chosen and potential improvements or substitutions are also discussed. The background of iris recognition, its use in cryptosystems, and the application of error-correcting codes are investigated as well.
|
|
|
Stanovení flavonoidů ve vybraném sortimentu rodu Iris L. a možnosti jejich použití jako rostlinných barviv
Valešová, Barbora
The thesis deals with the determination of the content of substances in the rhizomes and flowers of the selected variety of the genus Iris L. and the possibilities of using the iris as a dyeing plant. The literary part of the diploma thesis deals with the characteristics of the selected species and its cultivars of the genus Iris L., a description of species important in phytotherapy. Furthermore, the description of phenolic substances, flavonoids, anthocyanins, antioxidant capacities and methods of determination of these substances are described. In the practical part, the described methods are applied, the results are compared and statistical data evaluated. In the flowers of the iris, phenols, flavonoids, antioxidant capacity and anthocyanins were determined. The rhizomes determined phenols, flavonoids and antioxidant capacity. The diploma thesis also partially follows the bachelor's thesis, which compares the results of the color scale for individual samples of substances. In the diploma thesis we used to stabilize the character of metal salts (these salts in BP were not used). Several variants of the dyeing bath were used for dyeing. The filter extract of flowers in combination with vinegar, Salt, salt, edible soda, and blue rock were sampled by cold and boiling in both ways for 30 and 60 minutes. The samples were soaked in Soil Solution No. 1, which included 5 different substances (Soda, Savo, Salt, Vinegar, and Blue Scalp) and No. 2 (Blue Scalp, Vinegar and Water). As a control, samples were used that passed only the color bath without additives or pre-soaking.
|
|
|
Creating a Depth Map of Eye Iris in Visible Spectrum
Kubíček, Martin ; Kanich, Ondřej (referee) ; Drahanský, Martin (advisor)
Diplomová práce si dává za cíl navrhnout a uvést v praxi metodiku snímání oční duhovky ve viditelném spektru. Klade přitom důraz na kvalitu snímků, věrohodné podání barev vůči reálnému podkladu a hlavně na kontinuální hloubku ostrosti, která odhaluje dosud nezk- oumané aspekty a detaily duhovky. V poslední řadě se také soustředí na co nejmenší vys- tavení duhovky fyzickému stresu. Metodika obsahuje přesné postupy jak snímat duhovku a zajištuje tím konzistentnost snímků. Tím umožní vytvářet databáze duhovek s ohledem na jejich vývoj v čase či jiném aspektu jako je například psychologický stav snímané os- oby. Na úvod je v práci představena anatomie lidského oka a zejména pak duhovky. Dále pak známé způsoby snímání duhovky. Následuje část, jež se zabývá správným osvětlením duhovky. To je nutné pro požadovanou úroveň kvality snímků zároveň ale vystavuje oko velkému fyzickému stresu. Je tedy nutné najít kompromis mezi těmito aspekty. Důležitý je popis samotné metodiky obsahující podrobný popis snímání. Dále se práce zabývá nutnými postprodukčními úpravami jako je například složení snímků s různou hloubkou ostrosti do jednoho kontinuálního snímku či aplikací filtrů pro odstranění vad na snímcích. Poslední část práce je rozdělena na zhodnocení výsledků a závěr, v němž se rozebírají možné rozšíření či úpravy metodiky tak, aby ji bylo možné použít i mimo laboratorní podmínky.
|
|
|
Biometric system for retina and iris recognition
Hájek, Josef ; Derawi, Mohammad (referee) ; Provazník, Ivo (referee) ; Drahanský, Martin (advisor)
Tato disertační práce se zabývá biometrickým a medicínským zařízením pro simultánní snímání duhovky a sítnice oka v jednom kroku. V případě biometrického zaměření je práce rozšířena o vzájemnou fúzi těchto dvou biometrik do jedné šablony, kdy multimodální systém vykazuje mnohem lepší parametry než systém unimodální, a to především ve větší unikátnosti, univerzálnosti a velmi obtížně proveditelnému útoku (až téměř nemožnému) na senzor. V případě medicínského využití práce dále rozvíjí detekci a klasifikaci nemocí pro základ expertního systému pro oftalmologické účely, který bude umožňovat pomoc lékaři při stanovení diagnózy nálezu v obrazu sítnice (či duhovky) oka.
|
|
|
Designing of new classifiers for peony, daylilies and non-bearded irises in the Průhonice botanic garden.
Sekerka, Pavel ; Caspers, Zuzana ; Macháčková, Markéta ; Papoušková, L. ; Koudela, M.
With accepting new genera (Hemerocallis, Paeonia, Iris subgen. Limniris) into National Program for Genetic Resources, a need for creating new classifiers for cultivar description has risen. When proposing classification characteristics, we have resulted from botanical monographies of the genera, existing classifiers and from experience in cultivar description. In creating and evaluation of the classifier we have cooperated with leading institution, Gene Bank of Crop Research Institute, and Department of Horticulture (FAFNR) at Czech University of Life Sciences, which has submitted it as a diploma and a bachelor thesis. New classifiers will be published in 2019 in GRIN Czech database.
|
guest ::
