1. Novel Multiple Spatial Watermarking Technique in Color Images
Source：Fifth International Conference on Information Technology: New Generations, April 2008 pp
Author：Ibrahim Nasir, Ying Weng, and Jianmin Jiang
Reporter：Ching-Chih Cheng
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2. Outline Introduction Proposed watermarking technique
Experimental results
Conclusions
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3. Introduction Hiding Cover image Stego image Extracting Watermark
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4. Proposed watermarking technique (1/2)
Watermark embedding 2 3 1 4
8*8 hide a bit of watermark
less sensitive to human eyes
512*512
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5. Proposed watermarking technique (2/2)
Watermark detection
normalized cross correlation
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6. Experimental results (1/2)
PSNR=38.925
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PSNR=

7. Experimental results (2/2)
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8. Conclusions
propose novel and robust color image watermarking technique
propose scheme is robust for several attacking operations
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