1 formatted text document data hiding robust to printing,copying and scanning speaker:fanjia yen...
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![Page 1: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/1.jpg)
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Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning
Speaker:Fanjia Yen
Adviser:Quincy Wu
Date:2008/04/10
![Page 2: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/2.jpg)
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Outline
Steganography ISM (Inter-word space) Modulation of the Inter-word Space Embedding rule Hidden Data Extraction Reference
![Page 3: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/3.jpg)
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Steganography
What to hide Text Images Sound
How to hide Embed text in text/image/sound files Embed image in text/image/sound files Embed sound in text/image/sound files
![Page 4: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/4.jpg)
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ISM (Inter-word space)(1/2)
A space between adjacent words in a text row.
There are nine inter-word spaces in the row.
The actual length of the inter-word spaces in terms of number of pixels. 1 pixel -> 1 bit. For example,”1”for black and “0” for white.
![Page 5: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/5.jpg)
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ISM (Inter-word space)(2/2)
![Page 6: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/6.jpg)
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Modulation of the Inter-word Space(1/2)
![Page 7: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/7.jpg)
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Modulation of the Inter-word Space(2/2) After data embedding:
![Page 8: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/8.jpg)
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Embedding rule(1/2)
![Page 9: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/9.jpg)
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Embedding rule(2/2)
![Page 10: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/10.jpg)
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Hidden Data Extraction(1/2)
![Page 11: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/11.jpg)
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Hidden Data Extraction(2/2)
If ΦA - ΦB >0, bit ‘1’ is extracted. If ΦA - ΦB <0, bit ‘0’ is extracted.
![Page 12: 1 Formatted Text Document Data Hiding Robust to Printing,Copying and Scanning Speaker:Fanjia Yen Adviser:Quincy Wu Date:2008/04/10](https://reader035.vdocument.in/reader035/viewer/2022062423/56649eeb5503460f94bfd044/html5/thumbnails/12.jpg)
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Reference
http://en.wikipedia.org/wiki/Steganography wikipedia
http://ms11.voip.edu.tw/~eddie/file/Formatted_Text_Document_Data_Hiding_Robust_to_Printing_Copying_and_Scanning.pdf