|
|
Cutting tools for deep drilling and their use in practice
Sedlář, Jiří ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
This bachelor thesis deals with tools for drilling deep holes. The first part is focused on the basic description of the drilling process, sorting the tools according to their construction and last but not least, sorting of the systems used for deep drilling. In the theses is further elaborated an overview of materials for the production of cutting tools and ways of coating, which are used the most nowadays. There is a constant development in coating, because of the better mechanical, physical and chemical properties in this field. The last part is dedicated to the definition of the tools for deep drilling and their use in practice.
|
|
|
Image Analysis in Microscopy and Videokymography
Sedlář, Jiří ; Flusser, Jan (advisor) ; Jan, Jiří (referee) ; Cristobal, Gabriel (referee)
13551398399831-171f83a418df200fec6f622f22b6fb3d.txt The Thesis describes new methods for automatic processing of image data in biology, physics and medicine. The developed methods reconstruct light microscopy images of growing microorganisms in intervals between observations, measure particles in atomic force microscopy images, and evaluate parameters of vocal fold vibrations in videokymographic images. All three problems have been hitherto solved primarily visually. The proposed methods allow automatic or computer-aided processing of the image data, and thus facilitate the evaluation process. Performance of the developed methods was tested on real images; the results were comparable with ground truth or results of visual evaluation. Application of the developed methods is not limited to the specific type of image data; the methods can be used in general for processing of images with similar characteristics. Page 1
|
|
|
Automatic assembly of jigsaw puzzles from digital images
Ondrúška, Peter ; Sedlář, Jiří (advisor) ; Bulánek, Jan (referee)
This thesis describes a new approach to automatic assembly of classical jigsaw puzzles by computer. The process involves processing scanned images of puzzle pieces, computing a solution based on piecewise compatibility and producing an image of the solution. Whereas previous approaches to this problem were mostly concentrated on using only the shape of the pieces, the method we proposed uses both shape and colour information. The method also introduced several improvements in different aspects of solving. The method was able to successfully solve a puzzle of more than 1000 pieces and thus outperformed previous algorithms.
|
|
|
Creating Panoramic Images from Photographs Acquired with Different Camera Settings
Fibichr, Jaroslav ; Holub, Viliam (referee) ; Sedlář, Jiří (advisor)
When taking pictures for the purpose of creating panoramic images, it is more convenient to adjust camera settings for each image separately to keep the convenient brightness distribution. It usually leads to a set of images with differences in brightness must be corrected before stitching. The goal of this thesis is to propose solutions to adjust these differences and implement them in the application Panomedic. The first method is based on direct brightness level mapping in overlapping area of the images. The second method utilizes statistical values obtained from image brightness distribution. The method for searching the seam of stitching is also described. The resulting panorama image is without visible transitions between the input images.
|
|
| |
|
|
Developing of bussiness activities of GEOPEN company
Kašpar, Karel ; Sedlář, Jiří (referee) ; Koleňák, Jiří (advisor)
This bachelor’s thesis focuses on the analysis of the GEOPEN Ltd. company. The thesis contains an analysis and a consequent proposal for the development of the company’s business activities. The proposal contains the expansion of company activities by establishing an online shop which should contribute not only to the improvement of the company’s status on the market, but also to raising the saleability and the renown of the company.
|
|
| |
|
|
Race Car Roll Cage
Sedlář, Jiří ; Hejtmánek, Petr (referee) ; Blaťák, Ondřej (advisor)
Master thesis is about increasing of protection the crew in race car with changes in its roll-over protective structure according to current safety rules. For examination was used the Finite Element Method. The products of this thesis are different variation of roll cages, which are tasked to increasing the safety of existent race car.
|
|
|
The suspension types of passenger Cars
Sedlář, Jiří ; Blaťák, Ondřej (referee) ; Porteš, Petr (advisor)
In this thesis there is mentioned the overview of types of axles, which are used by the current cars.Their working principle is described for each type of axle and it is also mentioned an example of usage for concrete car. In the thesis are listed marks and types of cars, which use this types of axles.
|
|
|
Detection of Elliptical Particles in Atomic Force Microscopy Images
Sedlář, Jiří ; Zitová, Barbara ; Kopeček, Jaromír ; Todorciuc, T. ; Kratochvílová, Irena
In this paper we describe a method for detection and measurement of elliptical particles in atomic force microscopy (AFM) images. AFM imaging is used in physics to scan surfaces; the measured heights are represented by pixel values. Each sample in our project consisted of elliptical particles of principally the same size; the size could be characterized by the average length and width of a number of salient particles. The method we proposed is based on segmentation of undamaged particles and their approximation by ellipses; the major and minor axes provide robust estimates of the lengths and widths of the particles, respectively. The method is robust to distortions typical of AFM images. Its performance was demonstrated on images of pyrroles and compared with manual detection. Results show that the automatic method could be used in place of the time-consuming manual detection.
|
guest ::
RSS feed.