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"Study of Hollow Letter CAPTCHAs Recognition Technology Based on Color ..."
Huishuang Shao et al. (2023)
- Huishuang Shao, Yurong Xia, Kai Meng, Changhao Piao:
Study of Hollow Letter CAPTCHAs Recognition Technology Based on Color Filling Algorithm. J. Inf. Process. Syst. 19(4): 540-553 (2023)

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