Sparse Coding Shrinkage in Intrinsic Time-Scale Decomposition for Weak Fault Feature Extraction of Bearings.
Jianbo YuHaiqiang LiuPublished in: IEEE Trans. Instrum. Meas. (2018)
Keyphrases
- sparse coding
- feature extraction
- image classification
- dictionary learning
- sparse representation
- natural images
- feature space
- linear combination
- generative model
- image representation
- face recognition
- image denoising
- sparse codes
- single image super resolution
- principal component analysis
- unsupervised learning
- feature vectors
- numerical solution
- image patches
- denoising
- object category recognition
- image features
- multiscale
- manifold learning
- high dimensional
- image processing
- small number
- object recognition
- bag of words
- ground truth
- wavelet packet
- scale space
- wavelet transform
- dimensionality reduction