The Failure of Noise-Based Non-continuous Audio Captchas.
Elie BurszteinRomain BeauxisHristo S. PaskovDaniele PeritoCeline FabryJohn C. MitchellPublished in: IEEE Symposium on Security and Privacy (2011)
Keyphrases
- random noise
- multimedia
- noise reduction
- signal to noise ratio
- noise level
- signal processing
- missing data
- noisy data
- visual data
- signal dependent
- noise removal
- audio visual
- visual information
- denoising
- median filter
- digital video
- input data
- continuous domains
- failure rate
- broadcast news
- noise sensitivity
- failure prediction
- expert systems