Breaking text-based CAPTCHAs with variable word and character orientation
Autor: | Starostenko, Oleg, Cruz-Perez, Claudia, Uceda-Ponga, Fernando, Alarcon-Aquino, Vicente |
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Zdroj: | In Pattern Recognition April 2015 48(4):1101-1112 |
Databáze: | ScienceDirect |
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