期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2016
卷号：7
期号：2
页码：69-72
语种：English
出版社：Ayushmaan Technologies
摘要：CAPTCHA system protects against automated scripts (or bots) by generating tests that humans can pass but computer programs cannot. Recent advancements in optical character recognition (OCR) techniques have led to successful attacks on text-based CAPTCHAs. To counter it, the design of these CAPTCHAs has become more complex, making it more challenging for humans to solve them successfully. Hence a new CAPTCHA system is proposed which works on the principle of facial expression detection. It exploits a real-time interaction from the user through front camera of laptop to get an input image. If the desired expression matches with input expression of the user, the CAPCTHA system gets unlocked. This makes the system more robust to bot attacks, also creating the user experience better due to its click only interface and language-independency as no text is involved.
关键词：CAPTCHA;bots;OCR;robust;facial expression detection;front camera
