Invisible and readable checkerboard as watermark with temporally brightness modulation.
Hiroshi UnnoKazutake UehiraPublished in: IAS (2021)
Keyphrases
- digital images
- watermarking scheme
- watermarking algorithm
- spatio temporal
- copyright protection
- spread spectrum
- image watermarking
- digital watermarking
- optical flow
- video watermarking
- watermarking method
- image processing operations
- temporal information
- robust image watermarking
- digital watermark
- geometric distortions
- watermarking technique
- gray level
- robust watermarking scheme
- watermark embedding
- discrete wavelet transformation
- secret information
- jpeg compression
- color temperature
- modulation scheme
- transfer function
- denoising
- image blur
- image blocks
- watermark detection
- audio signal
- signal processing
- human visual system