Digital watermarking

TLDR: A large number of the questioned people believe that watermarking should be placed in the intermediate area according to its severity in the sanction system, but the exact rules and regulations are still unclear.

Abstract: ................................................................................................................................................. 7 1.0 Introduction of Digital Watermarking ................................................................................................ 7 2.0 Watermarking ................................................................................................................................... 8 2.1 Definition of Watermarking ........................................................................................................... 8 2.2 Principle of Watermarking ............................................................................................................. 9 3.0 Requirements .................................................................................................................................. 10 3.1 Transparency: .............................................................................................................................. 10 3.2 Robustness: ................................................................................................................................. 10 3.3 Capacity or Data Load: ................................................................................................................. 10 4.0 Applications ..................................................................................................................................... 10 4.1 Copyright Protection: ................................................................................................................... 10 4.2 Authentication: ............................................................................................................................ 10 4.3 Broadcast Monitoring: ................................................................................................................. 10 4.4 Content Labeling: ......................................................................................................................... 10 4.5 Tamper Detection: ....................................................................................................................... 10 4.6 Digital Fingerprinting: .................................................................................................................. 10 4.7 Content protection: ..................................................................................................................... 11 5.0 Classifications of Watermarking ....................................................................................................... 11 5.1 Visible .......................................................................................................................................... 11 5.2 Invisible ....................................................................................................................................... 11 5.2.1 Robust Watermarks .............................................................................................................. 11 5.2.2 Fragile Watermarks ............................................................................................................... 11 5.2.3 Public and Private Watermark ............................................................................................... 12 5.3 Capacity ....................................................................................................................................... 12 5.4 Perceptibility ............................................................................................................................... 12 5.5 Embedding Techniques: ............................................................................................................... 12 5.5.1 Spread Spectrum ................................................................................................................... 12 Digital Watermarking 4 Abrar Ahmed Syed 1000614216 5.5.2 Quantization ......................................................................................................................... 12 5.5.3 Amplitude Modification: ....................................................................................................... 12 6.0 Techniques or Schemes of Watermarking ........................................................................................ 13 6.1 Spatial Domain Techniques .......................................................................................................... 13 6.1.1 Least Significant Bit Coding (LSB) ........................................................................................... 13 6.1.2 Predictive Coding Schemes .................................................................................................... 13 6.1.3 Correlation-Based Techniques ............................................................................................... 13 6.1.4 Patchwork Techniques .......................................................................................................... 14 6.2 Frequency Domain techniques ..................................................................................................... 14 6.2.1 Discrete cosine transform (DCT) based technique: ................................................................ 14 6.3 Wavelet Transform based Watermarking ..................................................................................... 18 6.4 Simple Watermarking .................................................................................................................. 19 7.0 Attacks ............................................................................................................................................ 20 7.1 Basic ............................................................................................................................................ 20 7.2 Robustness .................................................................................................................................. 20 7.3 Presentation ................................................................................................................................ 20 7.4 Interpretation .............................................................................................................................. 21 7.5 Implementation ........................................................................................................................... 21 7.6 Removal....................................................................................................................................... 21 7.7 Geometrical ................................................................................................................................. 22 7.8 Cryptographic .............................................................................................................................. 22 7.9 Active & Passive ........................................................................................................................... 22 7.10 Forgery ...................................................................................................................................... 22 7.11 Collusion .................................................................................................................................... 22 7.12 Distortive ................................................................................................................................... 23 8.0 Counter Attacks ............................................................................................................................... 23 8.1 Power Spectrum Condition (PSC) ................................................................................................. 23 8.2 Noise Visibility Function (NVF): .................................................................................................... 24 9.0 Privacy Laws of Watermarking ......................................................................................................... 25 10.0 Project Goal ................................................................................................................................... 25 10.1 Invisible Watermarking (Least significant bit Watermarking) ...................................................... 25 10.1.1 Steps ................................................................................................................................... 25 Digital Watermarking 5 Abrar Ahmed Syed 1000614216 10.1.2 Program .............................................................................................................................. 26 10.1.3 Algorithm Explanation ......................................................................................................... 28 10.1.14 Flow-chart: ........................................................................................................................ 31 10.1.5 Results: ............................................................................................................................... 31 10.2 Visible Watermarking – Concatenation ...................................................................................... 33 10.2.1 Steps ................................................................................................................................... 33 10.2.2 Program: ............................................................................................................................. 33 10.2.3 Algorithm Explanation ......................................................................................................... 36 10.2.4 Flow-chart ........................................................................................................................... 38 10.2.5 Result ..............................................................................................