Improved feature extraction based on spectral noise reduction and nonlinear feature normalization.
José C. SeguraJavier RamírezM. Carmen BenítezÁngel de la TorreAntonio J. RubioPublished in: INTERSPEECH (2003)
Keyphrases
- noise reduction
- feature extraction
- feature vectors
- signal to noise ratio
- edge detection
- preprocessing
- nonlinear diffusion
- edge preserving
- feature set
- median filter
- noise level
- noise removal
- noisy environments
- noise filtering
- image processing
- feature selection
- noise free
- wiener filter
- edge enhancement
- speech enhancement
- wavelet transform
- pattern recognition
- face recognition
- impulse noise
- speckle noise
- spectral analysis
- principal component analysis
- feature space
- impulsive noise
- edge preservation
- noise cancellation