ScatterType: a reading CAPTCHA resistant to segmentation attack.

Henry S. Baird Terry P. Riopka

Published in: DRR (2005)

Keyphrases

segmentation method
image segmentation
multiscale
level set
segmentation algorithm
region growing
medical images
energy function
fully automatic
object segmentation
segmentation accuracy
object detection
shape prior
countermeasures
word segmentation
brain mri