A sparse representation denoising algorithm for finger-vein image based on dictionary learning.
Lei LeiFeng XiShengyao ChenZhong LiuPublished in: Multim. Tools Appl. (2021)
Keyphrases
- dictionary learning
- sparse representation
- denoising
- sparse coding
- image denoising
- noisy images
- image classification
- face recognition
- image patches
- natural images
- wavelet coefficients
- sparse codes
- signal processing
- image representation
- dimensionality reduction
- computer vision
- noise level
- wavelet domain
- frequency domain
- test images
- high dimensional data
- video sequences
- multiresolution
- high quality
- gaussian noise
- sparsity constraints
- image processing