SPIHT

1. SPIHT

2. SPIHT • O(i,j)為點(i,j)的兒子集合 • D(i,j)為點(i,j)的子嗣集合 • L(i,j)=D(i,j) - O(i,j) • H:所有空間指向樹的樹根(最低子頻帶)

3. Initialization • Output • set the LSP as an empty list • add the coordinates to the LIP • those with descendants also to the LIS ,as type A entries

4. Initialization

5. Sorting Pass 2.1 for each entry (i,j)in the LIP do: 2.1.1 output Sn(i,j); 2.1.2 if Sn(i,j) = 1 then move (i,j) to the LSP and output the sign of (i,j) ;

6. Sorting Pass output: : 111000

7. Sorting Pass 2.2 for each entry (i,j) in the LIS do: 2.2.1 if the entry is of type A then output Sn(D(i,j)); if Sn(D(i,j)) = 1 then for each do: output Sn(k,l) ; if Sn(k,l) = 1 then add (k,l) to the LSP and output the sign of (k,l) ; if Sn(k,l) = 0 then add (k,l) to the end of the LIP ; O(i,j)={ (2i , 2j ) , (2i , 2j+1) , (2i+1 , 2j ) , (2i+1 , 2j+1) }

8. Sorting Pass output: : 111000 111000 10000 0

9. Sorting Pass If then move (i,j) to the end of the LIS as an entry of type B , and go to step2.2.2; Otherwise, remove entry (i,j) from the LIS ; 2.2.2 if the entry is of type B then output Sn(L(i,j)); if Sn(L(i,j)) = 1 then add each to the end of the LIS as an entry of type A ; remove (i,j) from the LIS

10. Sorting Pass output: : 111000 111000 10000 0 0

11. Sorting Pass output: : 111000 111000 10000 0 0 0 101100 0 0

13. Image Quality

14. Image Quality 表示x y的線性相關程度，當y=ax+b得到最大值1 表示x y的平均亮度，當x=y得到最大值1 表示x y的對比相似度，當 得到最大值1

15. Father PSNR=28.1872 Q=0.977938

16. Intra PSNR=28.1552 Q=0.97779 Combine PSNR=27.9566 Q=0.976747

17. Father Combine Intra

18. Father Combine Intra