Homework 1

1. Homework 1 Watermarking Advisor：葉家宏 Presenter：林承洋

2. Spatial Domain Watermarking Bits stream of each pixels Bit plane 3 Bit plane 2 Bit plane 1 Bit plane 0

3. Spatial Domain Watermarking Bit plane 3 PSNR:33.05 Bit plane 2 PSNR:39.11

4. Spatial Domain Watermarking Bit plane 1 PSNR:45.12 Bit plane 0 PSNR:51.14

5. Decode With Noise (Photoshop) Add 1% Noise by Photoshop Bit plane 3 Decode Filter

6. Decode With Noise (Photoshop) Add 3% Noise by Photoshop Bit plane 3 Decode Filter

7. Experimental Result (bit plane 0) 5% Noise 10% Noise Decode PSNR 28.65 Decode PSNR 25.23

8. Experimental Result (bit plane 0) 15% Noise 20% Noise Decode PSNR 22.97 Decode PSNR 21.34

9. Experimental Result (bit plane 4) Compression Quality 3 10 8 5 PSNR 14.38 11.58 10.69 10.03

10. Frequency Domain Watermarking Hide position Binary data Frequency domain

11. How to Hide Data

12. Experimental Result (DCT) Original After data hiding PSNR 43.18

13. Experimental Result (DCT) Compression Quality No compression 10 8 Compression Quality 5 3

14. Thank you for your listening