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Searching for "Human Interactive Proofs and Document Image Analysis." – sorted by Relevance.

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4 documents found, showing 1 through 4.

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CAPTCHA Challenge Tradeoffs: Familiarity of Strings versus Degradation of Images
by Sui-yu Wang, Henry S. Baird, Jon L. Bentley
…. Keywords: CAPTCHAs, human interactive proofs, document image analysis, Gestalt perception, familiarity…
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ScatterType: a legible but hard-to-segment CAPTCHA
by Henry S. Baird, Michael A. Moll, Sui-yu Wang — 2005 — Proceedings, IAPR 8 th International Conference on Document Analysis and
… to attack ScatterType is offered. Keywords: CAPTCHAs, human interactive proofs, document image analysis…
Cited by 3 (1 self) – Add To MetaCart

A Highly Legible CAPTCHA that Resists Segmentation Attacks
by Henry S. Baird, Michael A. Moll, Sui-yu Wang — 2005 — Lopresti (Eds), Proc., 2nd Int’l Workshop on Human Interactive Proofs (HIP2005), LNCS
… the degradations due to scattering remain severe. Keywords: CAPTCHAs, human interactive proofs, document image…
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ScatterType: a reading CAPTCHA resistant to segmentation attack
by Henry S. Baird, Terry Riopka — 2005 — Proc., IS&T/SPIE Document Recognition and Retrieval Conf
… interactive proofs, document image analysis, abuse of web sites and services, human/machine discrimination…
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