SA-DCT

• Advantages

  • Conceptually Optimal & for Arbitrary Region
  • Compatible with N x N DCT
    • shares fast algorithms with conventional DCT

• Disadvantages

  • Shape error sensitivity
    • weak in lossy shape coding
  • Well beaten by
    • Shape adaptive wavelet transform
    • M x N DCT with LPE Padding

• As results:

  • More improvement : Delta DC SA-DCT
  • SA-DCT, SA-wavelet, Padding with N x N DCT coexist
  • Matching Pursuits for residual error signal coding

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