Keyphrases
- automatic extraction
- edge detection
- multiscale
- wavelet transform
- noisy images
- edge detector
- image processing
- image enhancement
- wavelet coefficients
- relation extraction
- noise reduction
- wavelet decomposition
- denoising
- mathematical morphology
- sobel operator
- multiresolution
- wrapper generation
- multiresolution analysis
- recursive filtering
- biomedical literature
- data structure
- wavelet function
- noise estimation
- edge detection algorithm
- natural language text
- scale space
- wavelet domain
- signal to noise ratio
- wavelet analysis
- subband
- information retrieval
- natural images