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Program for Training of Dactyloscopic Experts
Bartoň, Jan ; Drahanský, Martin (referee) ; Lodrová, Dana (advisor)
This work deals with the design project and the creation of user interface of a programme for the training of dactyloscopy experts. The first chapters describe historical and technical evolution of dactyloscopy. Then the work explains the methods and concepts necessary for understanding and elemental orientations in determination of fingerprints. The final chapters present a proposition of possibilities in how to obtain and represent the results in a comprehensible form. The conclusion of the work is dedicated to tests and evaluation of the results.
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Fingerprints Generator
Chaloupka, Radek ; Orság, Filip (referee) ; Drahanský, Martin (advisor)
Algorithms for fingerprints recognition are already known for long time and there is also an effort for their best optimization. This master's thesis is dealing with an opposite approach, where the fingerprints are not being recognized, but are generated on the minutiae position basis. Such algorithm is then free of the minutiae detection from image and enhancements of fingerprints. Results of this work are the synthetic images generated according to few given parameters, especially minutiae.
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Morphing of Fingerprints
Dovičic, Denis ; Sakin, Martin (referee) ; Kanich, Ondřej (advisor)
This bachelor`s thesis deals with the creation of a realistic looking fingerprint with a double identity. The goal is the design and subsequent implementation of an algorithm to create such a morphed fingerprint. The morphing consists of three important steps, extracting the information from the fingerprint, morphing the information to generate a new fingerprint, and verifying the morphed fingerprint against both originals to evaluate the double identity rating. As an extension, an algorithm for blurring the edges of a morphed fingerprint was implemented, the Minutia Cylinder-Code SDK was integrated into the application to immediately obtain double identity rating, and the method of obtaining suitable identities from the original fingerprints was modified to improve results. The implemented algorithms were tested on a fingerprint database, where it was shown that in the absence of damage, the information from the fingerprint is reliably extracted, from 90 % cases the morphed fingerprint acquired two identities and from 60 % it also had a realistic appearance.
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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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Automatic Quality Improvement of a Fingerprint Image
Blaho, Vojtěch ; Lodrová, Dana (referee) ; Dluhoš, Ondřej (advisor)
This bachelor thesis is focused on enhancement the quality of fingerprint image and its qualitative evaluation. In the first part is defined term of a fingerprint image, the main characteristics features are analyzed and the most important properties to define a good quality image. The next chapter describes the method to determine the fingerprint image quality and regards with this method used in the SDK from Innovatrics in detail. The third chapter provides detailed acquaint with each step in enhancing the image using a method based on Gabor filter. The final part is devoted to the experimental results. It is generally difficult to create a method that would enhancement any fingerprint. Therefore, it would be appropriate to use the program to tune this method for a particular type of fingerprint or for a specific scanner.
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Analysis of Fingerprint Spoofs Created from Mold Done by Burning Technique
Sochová, Terézia ; Sakin, Martin (referee) ; Kanich, Ondřej (advisor)
This work is devoted to the production and analysis of fingerprint spoofs created from mold using a burning technique. The aim of this work is to create fingerprints spoofs from different materials and then to design and to implement an algorithm that compares spoofs with model fingerprints. Spoofs are made using beech wood molds. In order to create the fingerprints, plasteline, silicone and liquid latex are used. The analysis of the differences between fingerprint spoofs and their real fingerprints is based on the minutiae extraction and on their subsequent processing. The results of analysis are represented by three monitored metrics: number and type of minutiae, number of paired minutiae and average distance difference between fingerprint spoof minutiae and real fingerprint minutiae. The created program is tested using a database of produced fingerprint spoofs. The results of the program are compared with the results of the VeriFinger application. Both programs agreed that spoofs made by silicone are the ones of the highest quality.
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Editor for WSQ Format of Fingerprint Images for Demonstration
Németh, Patrik ; Rydlo, Štěpán (referee) ; Kanich, Ondřej (advisor)
The goal of this thesis is to design and implement an application suitable for demonstrating the individual steps of fingerprint analysis, and which is able to automatically process fingerprints stored in the most widely used formats for storing fingerprint imagery, such as WSQ, PNG and JPEG 2000. In this thesis special attention was given to automatic processing methods and analysis of fingerprint imagery. It also offers an overview of the WSQ format and of its comparison to JPEG 2000. The output of this work is a graphical application capable of demonstrating individual steps of widely used methods of fingerprint imagery processing and analysis. The application implements Gabor filtering, line thinning based on the Zhang-Suen method, and other methods of fingerprint processing. With some error, it is capable of detecting minutiae, singularities and the class of a fingerprint. Some of the processing parameters may be modified by the user via the graphical interface. Processed images can be exported in various image formats.
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Fingerprint identification algorithm
Skoupilová, Alena ; Vítek, Martin (referee) ; Kašpar, Jakub (advisor)
The main goal of this thesis is to introduce the meaning of identification and specific meaning of personal identification and mainly fingerprint identification. There is introduction to the meaning of biometrics as a key field for fingerprint recognition. Thesis also introduces principals and types of automatic processing and automatic detection of fingerprints. An existing and succesful methods are being described in the thesis and an automatic fingerprint identification alghoritm is being realized and described. Reability of the alghoritm is tested within experimental database.
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Processing of fingerprints
Kazík, Martin ; Hasmanda, Martin (referee) ; Říha, Kamil (advisor)
This diploma thesis deals with the identification of persons by their fingerprints. In the beginning, there is a brief overview of biometric methods. The issue of fingerprints and their automatic processing is very extensive and addresses a large amount of literature. This work describes the various stages processing fingerprints from receiving a fingerprint scan through the methods of enhancing fingerprint, binarization, the detection of minutiae to compare two fingerprints. After a short introduction of biometric techniques is briefly introduced the history of fingerprints as an instrument for identification of persons. Subsequently, there is the description of problems of obtaining fingerprints from older methods that require the transmission medium, to methods of obtaining fingerprints directly into a digital format. There are described basic principles of sensors and the principle of their function. Next part deals with methods of processing digital fingerprint images. These are methods for fingerprint image enhancement, methods for image thresholding, thinning of ridge lines, detection of global and local characteristics of the fingerprint. The next section introduces the basic methods of comparison and classification of fingerprints. The practical part describes the specific implementation of fingerprint processing chain. For each processing stage is implemented one selected method. The result is an application that allows displaying the output of each phase, the comparison of fingerprints 1:1 and also finds a fingerprint in the database, by comparing one fingerprint with many.
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Detection of Interrupted Friction Ridges of a Fingerprint and Their Reconstruction
Cejpek, Tomáš ; Dvořák, Radim (referee) ; Stružka, Jaroslav (advisor)
This Bachelor thesis describes creating application with graphical user interface for editing a fingerprint ridges. They are interrupted due to dry fingerprint. The proposed algorithm uses Gabor filter for editing fingerprint ridges. He is implemented in C++ and uses a library aimed at work with images OpenCV and Qt application for creating graphical user interface. The thesis is also about testing and evaluating the results of a proposed algorithm for editing fingerprint ridges.
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