Emerging-Image Motion CAPTCHAs: Vulnerabilities of Existing Designs, and Countermeasures.
Song GaoManar MohamedNitesh SaxenaChengcui ZhangPublished in: IEEE Trans. Dependable Secur. Comput. (2019)
Keyphrases
- countermeasures
- image motion
- information security
- optical flow
- flow field
- stereo disparity
- motion estimation
- image sequences
- camera motion
- motion analysis
- motion model
- ego motion
- cyber attacks
- power analysis
- motion parameters
- rigid motion
- motion field
- security measures
- data mining
- point correspondences
- optic flow
- intrusion detection
- least squares
- multiscale
- information systems