Unsharp masking using quadratic filter for the enhancement of fingerprints in noisy background.
V. S. HariV. P. Jagathy RajR. GopikakumariPublished in: Pattern Recognit. (2013)
Keyphrases
- unsharp masking
- image enhancement
- edge preserving
- contrast enhancement
- noise reduction
- edge enhancement
- image processing
- image analysis
- noise removal
- image restoration
- median filter
- histogram equalization
- edge detection
- fine details
- pairwise
- least squares
- noise level
- signal to noise ratio
- transfer function
- denoising
- color images
- multiresolution
- computational complexity
- feature extraction