Bc. Kristína Miklášová

Master's thesis

Systém pre rozpoznávanie CAPTCHA obrázkov

The system for recognition of CAPTCHA images
Abstract:
The topic of this thesis is text recognition on CAPTCHA images. Images come from different sources (variable length of characters, different types of fonts, background). The work contains the overview of current approaches for CAPTCHA recognition as well as the implementation of our designed system. The system has been deployed in real traffic in out company. Our solution is based on appropriate pre …more
Abstract:
Táto diplomová práca sa zaoberá rozpoznávaním textu na CAPTCHA obrázkoch z rôznych zdrojov (rozličné typy písma, pozadia, premenlivý počet znakov). V práci sa venujeme prehľadu aktuálnych prístupov k riešeniu tejto problematiky, ako aj samotnej implementácii systému, ktorý sme nasadili do produkcie spoločnosti Kiwi.com. Naše riešenie je založené na vhodnom predspracovaní obrázku a následnom natrénovaní …more
 

Keywords

textová CAPTCHA obrázky Attention OCR dataset predspracovanie obrázkov Python konvolučno-rekurentná neurónová sieť Kiwi.com
 
Language used: Slovak
Date on which the thesis was submitted / produced: 20. 7. 2020
Identifier: https://is.muni.cz/th/v820l/

Thesis defence

  • Date of defence: 15. 9. 2020
  • Supervisor: doc. RNDr. Tomáš Brázdil, Ph.D.
  • Reader: RNDr. David Wiesner

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Institution archiving the thesis and making it accessible: Masarykova univerzita, Fakulta informatiky
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Masaryk University

Faculty of Informatics

Master programme / field:
Informatics / Artificial Intelligence and Natural Language Processing

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