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Parallel signal processing with help of GPU
Václavík, Jiří ; Frýza, Tomáš (referee) ; Mego, Roman (advisor)
In the introduction, the bachelor thesis outlines the origins of modern graphic processors. The theoretical part of the text describes the minimum of required information from parallel programming model essential to program simple DSP algorithms. The next part elaborate on three common DSP algorithms, finite impulse response filter, naive implementation of discrete cosine transform type II, and fast Fourier transform. To demonstrate parallel capability of GPU, algorithm for JPEG compression was chosen as JPEG compression is favorable because it illustrates both advantages and disadvantages of parallel data processing on GPU, and compromises needed to be considered.
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Image Interpolation
Václavík, Jan ; Odstrčilík, Jan (referee) ; Kolář, Radim (advisor)
This bachelor’s thesis deals with the comparison of different interpolation methods. And their use on different grey scaled 2D images. The main part is dealing with linear, quadratic and cubic method and their qualitative evaluation for multiple resizing of image resolution. The analysis is resolved in computing system Matlab.
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Blood vessel segmentation and modeling in fundus images
Václavík, Jan ; Odstrčilík, Jan (referee) ; Kolář, Radim (advisor)
Studies of the vascular tree in the retina have applications not only in the medical field but also biometrics. The mathematical description of the retinal vasculature could help facilitate and improve the diagnosis of certain diseases, their automatic localization or to accelerate the identification and verification of individuals. The aim is to design and develop an algorithm that will automatically approximate major retinal vessels by parabolic, linear and kvartic functions. The main part of this thesis is therefore devoted to this issue, including vascular segmentation using Gabor filters, morphological erosion, thresholding, skeletonization and the resulting optimization of the approximation model. The quality of the produced algorithm is discussed in the summary.
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P3-TOP-TN-15001 Achievable microroughness of ASPIICS optical glass elements
Bartoníček, Jiří ; Budasz, Jiří ; Hadincová, Ivana ; Horodyská, Petra ; Kaucká, Iva ; Kovačičinová, Jana ; Lédl, Vít ; Melich, Radek ; Pleštil, Jan ; Poláková, Ivana ; Procháska, František ; Psota, Pavel ; Rail, Zdeněk ; Šípová, Gabriela ; Šrajer, Bohdan ; Ulrichová, Iva ; Václavík, Jan ; Vápenka, David ; Vít, Tomáš
The scope of this document is describe a test that investigates an achievable micro-roughness realized on different types of optical glasses [R1] that are planned to be employed for realization of PROBA3 coronagraph telescope. The test is realized with respect to the technological manufacturing possibilities of optical elements at TOPTEC facility.
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Measures towards Increasing the Effectiveness of Research in the Field of Chemical Synthesis
Václavík, Jiří ; Hartman, Ladislav (advisor) ; Koubek, Josef (referee)
Research in the field of chemical synthesis is a very diverse and complex activity. Individual workplaces differ in many aspects and this essentially impacts the productivity. The aim of this Master's Thesis is to identify, name and analyse those aspects, and to suggest measures to be taken in order to help increase the performance, all that within defined assumptions. The first half of the Theoretical Part is devoted to academic studies on this topic, which are mainly focused on the HR part. Selected methods of lean manufacturing commonly used in industry are also described. The Experimental Part comprises an analysis of research facilities in which the author worked as a chemist, and a set of proposed measures that lead to an increased productivity. The Thesis is concluded by a demarcation of a series of factors that influence the performance of R&D workers, groups and institutions, and a vision of an ideal laboratory is presented.
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Study: Spindle bending
Pintr, Pavel ; Psota, Pavel ; Václavík, Jan
The study concludes with an analysis of possible measurement solutions droop horizontal spindle machine tool load. Were analyzed using optical methods deflection of the laser beam and analysis of the beam pattern on the screen two cameras. Was also analyzed autocollimation method. The study also includes oprické simulation situation made Zemax environment and mathematical calculations deflection, motion track and the estimated sensitivity
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