A Captcha Based on the Human Visual Systems Masking Characteristics

@article{Ferzli2006ACB,
  title={A Captcha Based on the Human Visual Systems Masking Characteristics},
  author={Rony Ferzli and Rida A. Bazzi and Lina J. Karam},
  journal={2006 IEEE International Conference on Multimedia and Expo},
  year={2006},
  pages={517-520}
}
In this paper, a CAPTCHA is presented based on the masking characteristics of the human visual system (HVS). Knowing that noise can be masked by high activity regions and showing that edges can be masked by noise for a human observer while still being detected by machines, the suggested CAPTCHA is composed of English alphabets that are picked randomly and written with a combination of texture and edges with added noise such as to deceive the machine by randomly changing the visibility of… CONTINUE READING

Figures and Topics from this paper.

Citations

Publications citing this paper.
SHOWING 1-10 OF 13 CITATIONS

Developing an Empirical Algorithm for Protecting Text-Based CAPTCHAs against Segmentation Attacks

  • 2013 12th IEEE International Conference on Trust, Security and Privacy in Computing and Communications
  • 2013
VIEW 5 EXCERPTS
CITES BACKGROUND & METHODS
HIGHLY INFLUENCED

Avatar CAPTCHA: Telling computers and humans apart via face classification

  • 2012 IEEE International Conference on Electro/Information Technology
  • 2012
VIEW 1 EXCERPT
CITES METHODS

References

Publications referenced by this paper.
SHOWING 1-10 OF 13 REFERENCES

Susstrunk, “Visibility of Noise in Natural Images

S. Winkler
  • Proc. IS&T/SPIE Electronic Imaging 2004: Human Vision and Electronic Imaging IX,
  • 2004
VIEW 5 EXCERPTS
HIGHLY INFLUENTIAL

Recognizing objects in adversarial clutter: breaking a visual CAPTCHA

  • 2003 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2003. Proceedings.
  • 2003

Method for Selectively Restricting Access to Computer Systems

M. D. Lillibridge, M. Abadi, K. Bharat, A. Z. Broder
  • U.S. Patent No. 6,195,698, Feb. 2001.
  • 2001
VIEW 1 EXCERPT

Method for Selectively Restricting Access to Computer Systems

M. D. Lillibridge, M. Abadi, K. Bharat, A. Z. Broder
  • U.S. Patent No. 6,195,698, Feb. 2001.
  • 2001
VIEW 1 EXCERPT

Similar Papers