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Semi-supervised deep learning approach to break common CAPTCHAs

Crossref DOI link: https://doi.org/10.1007/s00521-021-05957-0

Published Online: 2021-04-12

Published Print: 2021-10

Update policy: https://doi.org/10.1007/springer_crossmark_policy

Authors

Bostik, Ondrej https://orcid.org/0000-0002-7856-2084
Horak, Karel https://orcid.org/0000-0002-2280-3029
Kratochvila, Lukas https://orcid.org/0000-0001-8425-323X
Zemcik, Tomas https://orcid.org/0000-0003-4363-4313
Bilik, Simon https://orcid.org/0000-0001-8797-7700
License Information

Text and Data Mining valid from 2021-04-12

Version of Record valid from 2021-04-12
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Article History

Received: 20 August 2020

Accepted: 25 March 2021

First Online: 12 April 2021

Declarations

:

: The authors declare that they have no conflict of interest.