Unsupervised Feature Extraction for Time Series Clustering Using Orthogonal Wavelet Transform.
Hui ZhangTu Bao HoYang ZhangMao Song LinPublished in: Informatica (Slovenia) (2006)
Keyphrases
- wavelet transform
- feature extraction
- discriminant projection
- spline wavelet
- image coding
- wavelet coefficients
- subband
- image compression
- high frequency
- dimensionality reduction
- multiresolution
- multiscale
- low frequency
- wavelet domain
- unsupervised learning
- wavelet filters
- wavelet decomposition
- wavelet analysis
- discriminant analysis
- manifold learning
- image classification
- feature selection
- pattern classification
- linear discriminant analysis
- lifting scheme
- dimension reduction
- frequency domain
- preprocessing
- image processing
- filter bank
- translation invariant
- pattern recognition
- multiresolution analysis
- multiresolution representation
- wavelet bases
- compactly supported
- face recognition
- feature vectors
- unsupervised manner
- haar wavelet
- image fusion algorithm