Digital Watermarking Method to Extract Watermarks from Printed Matters with Cell Phone by Using Finder Patterns and Alignment Pattern of QR Code.
Motoi IwataKenji YamanakaKoichi KisePublished in: ACPR (2013)
Keyphrases
- barcode
- watermarking algorithm
- watermarking method
- qr code
- watermarking scheme
- copyright protection
- jpeg compression
- signal processing
- digital watermarking
- error correction
- wavelet domain
- image watermarking
- spread spectrum
- watermarking technique
- hough transform
- image acquisition
- watermark embedding
- dct coefficients
- jpeg images
- mobile devices
- lossy compression
- computer vision
- image processing
- watermarked image
- multimedia data
- multiscale