A new approach for image enhancement applied to low-contrast-low-illumination IC and document images.
Chung-Chu LeungKa-Shing ChanHoi-Mei ChanWai-Kin TsuiPublished in: Pattern Recognit. Lett. (2005)
Keyphrases
- image enhancement
- low contrast
- document images
- contrast enhancement
- enhanced image
- image processing
- high noise
- homomorphic filtering
- histogram equalization
- median filter
- image analysis
- gamma correction
- edge detection
- gray level
- color restoration
- partial differential equations
- noise removal
- blood vessels
- transfer function
- digital camera
- gray value
- image data
- color images
- multiscale
- speckle noise
- mathematical morphology
- fully automatic
- minutiae extraction
- feature extraction