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Shang-Quan Sun

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Preprint Oct 2026

CaptchaAgent: Verifiable Visual Reasoning for CAPTCHA Solving

Modern reasoning CAPTCHAs require fine-grained perception, compositional relation reasoning, and grounded browser interaction. End-to-end vision-language model agents remain brittle in this setting because a missed object, incorrect count, or confused relation can propagate directly to the final action. To address this...

Shang-Quan Sun, Ruo-Yu Chen, Zhi-Rui Liu et al. · 0 citations

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