1. 視訊通訊 homework 2 林葦 M023010042

2.  Implement 4-bit IGS code  LSB is zero  LSB is random  Design LSB by myself  Error correction  Hamming code  results outline

3. LSB is zero original LSB is zero, PSNR = 31.9

4. LSB is random original LSB is random, PSNR = 27.4

5. Design LSB by myself

6. original mine, PSNR = 32.3

7. chart

8. Bit error rate 1% original LSB is zero, PSNR = 24.1

9. Bit error rate 15% original LSB is zero, PSNR = 13.4

10.  Hamming code :  p1=d1 d2 d3  p2=d1 d3 d4  p3=d2 d3 d4 Error correction d1d2d3d4p1p2p3 ++ + + + +

11. Bit error rate 1% PSNR=24.1 PSNR = 27.9

12. Bit error rate 5% PSNR=17.8 PSNR = 20.3

13. Bit error rate 15% PSNR=13.4 PSNR = 13.9

14. results