Sparse coding based orientation estimation for latent fingerprints.
Shuxin LiuManhua LiuZongyuan YangPublished in: Pattern Recognit. (2017)
Keyphrases
- sparse coding
- orientation estimation
- fingerprint images
- natural images
- sparse representation
- linear combination
- image classification
- generative model
- latent variables
- unsupervised learning
- image representation
- rotation invariant
- input image
- visual words
- image enhancement
- image patches
- low quality
- probabilistic model
- structure tensor
- high dimensional
- feature vectors
- image segmentation
- gabor filters
- multiscale