MASTER THESIS Video Watermarking - Computer Graphics Group ...

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I would like to thank my supervisor, RNDr. Josef Pelikán, for his professional leadership and valuable advice. I hereby declare that I have written this master thesis on my own, using exclusively cited sources. I approve of lending the thesis. Prague, April 20, 2007 Martin Zlomek
Table of Contents Abstract 5 1 Introduction 6 2 Watermark Theory 8 2.1 Watermark Classification...............................................................................9 2.2 Embedding and Detection.............................................................................10 2.3 Watermark Attacks.......................................................................................12 3 The H.264 Standard 13 3.1 The H.264 Structure.....................................................................................13 3.1.1 NAL Units and Pictures....................................................................13 3.1.2 Slices..................................................................................................14 3.1.3 Macroblocks.......................................................................................15 3.2 Encoding.........................................................................................................16 3.3 Decoding.........................................................................................................18 4 Implementation Details 19 4.1 The H.264 Codec...........................................................................................19 4.1.1 Supported Features...........................................................................20 4.1.2 Known Bugs and Limitations...........................................................20 4.2 The <strong>Watermarking</strong> Framework....................................................................21 4.2.1 GStreamer Multimedia Framework.................................................21 4.2.2 Embedding.........................................................................................22 4.2.3 Detection............................................................................................26 4.2.4 Notes..................................................................................................29 4.3 <strong>Watermarking</strong> Methods................................................................................30 4.3.1 Pseudo-random Noise Watermark...................................................30 4.3.2 Block Watermark...............................................................................31 4.3.3 Coefficient Watermark......................................................................33 5 Testing 34 5.1 Perceptibility.................................................................................................35 3
Page 1: Charles University in Prague Facult
Page 5 and 6: Název práce: Watermarking videa A
Page 7 and 8: information about copyright owner a
Page 9 and 10: Common geometric distortions - the
Page 11 and 12: watermark, i.e. values of the water
Page 13 and 14: Chapter 3 The H.264 Standard The H.
Page 15 and 16: There are three types of slices: I,
Page 17 and 18: frequency transform. The choice is
Page 19 and 20: Chapter 4 Implementation Details Th
Page 21 and 22: auxiliary coded pictures), Supplem
Page 23 and 24: an intra coded slice, content ID -
Page 25 and 26: samples is subtracted from the resi
Page 27 and 28: At the beginning of the entire proc
Page 29 and 30: file in order to provide detailed r
Page 31 and 32: as a part of the whole process. The
Page 33 and 34: coefficients are hardly set to non-
Page 35 and 36: Table 1 outlines characteristics of
Page 37 and 38: The third and the fourth row sets c
Page 39 and 40: Using block method, we cannot consi
Page 41 and 42: probabilities of watermark detectio
Page 43 and 44: 5.4.3 Cropping In the cropping test
Page 45 and 46: 5.4.6 Blurring Blurring can be cons
Page 47 and 48: 5.4.8 Multiple Watermark Embedding
Page 49 and 50: Despite the expectations, all the m
Page 51 and 52: ecompression and noising, and to so
Page 53 and 54:
Bibliography [1] Ingemar J. Cox, Jo
Page 55 and 56:
Appendix A Enclosed CD & Installati
Page 57 and 58:
Appendix B The plugin usage The wat
Page 59:
length is the length of the list of
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MASTER THESIS Video Watermarking - Computer Graphics Group ...

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