Skip to main navigation Skip to search Skip to main content

CaptchaGG: A linear graphical CAPTCHA recognition model based on CNN and RNN

  • Guilin University of Electronic Technology
  • Zhaoqing Br. Center of Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology
  • Guilin Huigu Institute of Artificial Intelligence Industrial Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

This paper presents CaptchaGG, a model for recognizing linear graphical CAPTCHAs. As in the previous society, CAPTCHA is becoming more and more complex, but in some scenarios, complex CAPTCHA is not needed, and usually, linear graphical CAPTCHA can meet the corresponding functional scenarios, such as message boards of websites and registration of accounts with low security. The scheme is based on convolutional neural networks for feature extraction of CAPTCHAs, recurrent neural forests A neural network that is too complex will lead to problems such as difficulty in training and gradient disappearance, and too simple will lead to underfitting of the model. For the single problem of linear graphical CAPTCHA recognition, the model which has a simple architecture, extracting features by convolutional neural network, sequence modeling by recurrent neural network, and finally classification and recognition, can achieve an accuracy of 96% or more recognition at a lower complexity.

Original languageEnglish
Title of host publicationProceedings - 2022 9th International Conference on Digital Home, ICDH 2022
EditorsRuo-mei Wang, Zhong-xuan Luo, Bao-cai Yin, Jie-qing Tan
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages175-180
Number of pages6
ISBN (Electronic)9781665454780
DOIs
StatePublished - 2022
Externally publishedYes
Event9th International Conference on Digital Home, ICDH 2022 - Guangzhou, China
Duration: 28 Oct 2022 → 30 Oct 2022

Publication series

NameProceedings - 2022 9th International Conference on Digital Home, ICDH 2022

Conference

Conference9th International Conference on Digital Home, ICDH 2022
Country/TerritoryChina
CityGuangzhou
Period28/10/22 → 30/10/22

Keywords

  • CAPTCHA
  • CNN
  • Feature Extraction
  • RNN
  • Sequence Modeling

Fingerprint

Dive into the research topics of 'CaptchaGG: A linear graphical CAPTCHA recognition model based on CNN and RNN'. Together they form a unique fingerprint.

Cite this