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Greyscale to binary image conversion
Růžička, Kamil ; Horák, Karel (referee) ; Richter, Miloslav (advisor)
In the first part of the bachelor’s thesis are described the basic terms in obtaining and description of a digital image. The next part describes the theory about possibilities of image processing, which are essential for the correct separation of the text from the background, and thus for the correct conversion grayscale image to binary image. Then was performed the analysis of the task with the preparation of data for image processing. Then were applied different methods for converting grayscale to binary images and it was compiled user application. The final step is to evaluate the practical realization of the conversion, the subjective testing of respondents and objektive testing with the OCR software.
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Contactless level measurement
Pribula, Wojciech ; Richter, Miloslav (referee) ; Petyovský, Petr (advisor)
The~thesis begins with an~analysis of~methods of~water level measurement in~high-pressure system. This~systems are placed in~heating plants and power plants and they work with the water whose temperature exceeds 300\,°C and whose pressure is above 10\,MPa. Thesis present method of~differential pressure with the~derivation of~the~correction element and also is~described capacitive method, especially Hydrastep system. This~work prepares theoretical foundation under creating algorithm for level detection using image recognition. Also it considers suitable hardware as~camera and light for illuminating and highlighting the~level. It~includes outline of~captured image editing and detection algorithm. The next part of thesis is dedicated algorithm itself. There are described classes and methods that are used for level detection or for debugging. Also, there are specified necessary modifications of watermark and requirements for watermarks surroundings thats are necessary for proper functioning of the algorithm.
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2D barcode recognition system
Sedlář, Martin ; Richter, Miloslav (referee) ; Petyovský, Petr (advisor)
This bachelor’s thesis deals with 2D barcode reading. At the beginning a brief overview of the most used barcodes is shown. The work mainly deals with QR codes. Their structure, composition and rules for encoding and decoding are explained. Problems with arrangement of photographic scene are solved too. C++ algorithm for QR code reading is described with usage of the OpenCV library.
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Detection of changes in the image
Čech, Jan ; Zemčík, Tomáš (referee) ; Richter, Miloslav (advisor)
The aim of this thesis is finding changes in two similar pictures made in different periods of time. This task belongs to the field of computer vision. To solve this problem different methods of computer vision are used. First the angle of scanning has to be found. Then pictures go through the proces of preprocessing, afterwards the segmentation and the determination of descriptors are carried out. Finally, the pictures are compared and the differences are pointed out.
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C++ programming examples for education
Šabatka, Pavel ; Richter, Miloslav (referee) ; Petyovský, Petr (advisor)
The purpose of this thesis is implementation utilities for beginners in programming. These utilities could make passing subject BPPC easier. Theoretical part dissertates about programming languages C, C++ and about differences between them. There is also talked about compilers of these languages with accent for development environment MS Visual C++ 2005 and it’s diversities form ISO standards. This path contains also some basic chapters of programming, which are often noticed later. The second part is implementation libraries for checking programs. Library check.h checks programmer’s using of dynamic allocated memory and files. Library adtcheck.h was designed for checking and printing topology of abstract data types, which were implemented by programmer. There was designed also web pages with documentation for both libraries.
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Vehicles speed measurement
Schoř, Zdeněk ; Richter, Miloslav (referee) ; Honec, Peter (advisor)
This master’s thesis deals with vehicles speed measurement. The first part is a theoreticalanalysis with an overview of the measurement devices, which are being used nowadays.The second part of the thesis focuses on creating a method for vehicles speed measure-ment in a common traffic situaction. Measurement is based on digital image processingfrom a camera and determining the movement in the image.For movement determination is used license plate detection and other possible methodsare explained in the thesis for future improvement.Created measurement method is using vehicle with known proportions for visual scenecalibration. The MATLAB programming environment is used to detect license plate andfor calibration.Test measurement is conducted in the thesis, which is compared with other referencespeed measurement method.The purpose of the thesis is to use the proposed method to reduce the cost of measuringthe speed of vehicles and contribute to safety and smoothness on the roads.
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Object detection
Vítek, Pavel ; Kratochvíla, Lukáš (referee) ; Richter, Miloslav (advisor)
This paper deals with object detection where a human figure is used as a model. The introductory chapter defines terms detection and object. The second chapter describes the basic theory of computer vision , such as image processing and its parts. A substantial part is also focused on the Canny edge detection, upper body detection and pose detection. The third chapter describes the MATLAB integrated development environment in which the image processing functions are implemented. The last chapter is a practical demonstration of object detection. Different upper body detection methods are compared there. In the last subsection, two methods of determining the deviations based on the template are compared. Finally, all methods are compared with respect to the obtained results.
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Coupling of images
Gorgol, Martin ; Petyovský, Petr (referee) ; Richter, Miloslav (advisor)
This master’s thesis describes the design and implementation of the application that created the basis set pieces "puzzle" according to the shape of the folded edges of the original image. This application is developed using Matlab. The work also describes how to create a database of actual pieces of the puzzle composite photo image. Closer was also focused on finding the characteristic section points, their segmentation and appropriate description. There is dismantled procedure for selecting the types of symptoms and their extraction. On the basis of suitably described pieces of segmented parts is designed and implemented the algorithm of comparing and grouping into clusters. Using the proposed method of visualization is then displayed in the resulting composite picture puzzle.
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Excercises for Data Acquisition for BEMS course
Novotný, Marek ; Richter, Miloslav (referee) ; Čejka, Miloslav (advisor)
The content of this thesis is to understand a field of data acquisition. There is explained what it is data acquisition and also there are described frequently used terms and principles, which belong to this theme. We have to understand how to get useful information from a specific physical effect or event; how can be this information processed or represented. A part of this thesis describes hardware side of this mechanism – the most used buses and measuring systems, cards and modules belonging to it. There are also described used developing and measuring programmes, their features and system of output of applications besides. In the thesis we can see which tasks can use data acquisition, which problems can appear and we have to know about them. As an example of the whole data acquisition there are showed two tasks which are worked out in system of LabVIEW. Both tasks work with real mechanisms so they get real data and we can work with them further.
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