A new watermarking algorithm for scanned grey PDF files using DWT and hash function.
Walid AlakkHussain Al-AhmadAlavi KunhuPublished in: CSNDSP (2014)
Keyphrases
- pdf files
- watermarking algorithm
- hash functions
- jpeg compression
- image watermarking
- integer wavelet transform
- lossy compression
- geometric attacks
- digital watermarking
- wavelet domain
- discrete wavelet transform
- signal processing
- similarity search
- watermarking scheme
- copyright protection
- image authentication
- document images
- multiresolution
- dct coefficients
- watermarking technique
- wavelet transform
- pattern recognition
- wavelet coefficients
- secret key
- data distribution
- watermarking method
- electronic documents
- spatial domain
- digital image watermarking
- digital libraries