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Graphics Interchange Format  |  1996-07-01  |  67.4 KB  |  501x628  |  4-bit (16 colors)
   ocr: - 2:1 2:1 2:1 2:1 2:1 LP LP LP LP c(1) J.p Level 0 2:1 HP d(J-4,k) 2:1 HP d(J-3,k) Level 1 2:1 HP d(J-2,K) Level 2 2:1 HPH l / - d(J-1,K) Level 3 2:1 HPH - d(J,k) Level 4 (b) - J.p 54321 1 43210 d(J,k) 3210- d(J-1,k) 210-- d(J-2,k) 10-- U d(J-3,K) c(1) d(J-4,k) Figure 2: The Iree or pyramia algoritbm oftheforward fast wavelet transform (a) can be viewed as a partial grapb ofa binary tree (b). For. a particular unit interuat (21 samples), a masimum ofJ levels oftransform data can be formed.