Enhancing registration tolerance of extended visual cryptography for natural images.
Mizuho NakajimaYasushi YamaguchiPublished in: J. Electronic Imaging (2004)
Keyphrases
- sparse representation
- natural images
- visual cryptography
- sparse coding
- natural scenes
- multiscale
- higher order
- denoising
- test images
- input image
- object recognition
- secret sharing scheme
- image statistics
- receptive fields
- natural image statistics
- statistics of natural images
- natural image patches
- high frequency
- visual cortex
- secret image
- image segmentation