"A new image-based CAPTCHA using the orientation of the polygonally cropped ..."

Jong-Woo Kim, Woo-Keun Chung, Hwan-Gue Cho (2010)

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DOI: 10.1007/S00371-010-0469-3

access: closed

type: Journal Article

metadata version: 2020-06-04

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Jong-Woo Kim, Woo-Keun Chung, Hwan-Gue Cho:
A new image-based CAPTCHA using the orientation of the polygonally cropped sub-images. Vis. Comput. 26(6-8): 1135-1143 (2010)

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