Image Denoising via Improved Dictionary Learning with Global Structure and Local Similarity Preservations.
Shuting CaiZhao KangMing YangXiaoming XiongChong PengMingqing XiaoPublished in: Symmetry (2018)
Keyphrases
- image denoising
- dictionary learning
- global structure
- sparse coding
- natural images
- wavelet coefficients
- denoising
- sparse representation
- total variation
- partial differential equations
- image processing
- higher order
- similarity measure
- multiscale
- wavelet transform
- multiresolution
- geometric structure
- augmented lagrangian
- test images
- image patches
- prior knowledge
- object recognition
- tree structure
- linear combination
- image representation
- visual features
- motion estimation
- high resolution
- image retrieval