REGION-TEXTURE CODING : Cont’d

• Overcomplete (oversampled)

  • # transformed > # object pixels
  • Padding algorithm
    • zero-padding, repetitive padding,
    • lowpass extrapolation
  • Padding with N x N DCT
  • Shape Adaptive Wavelet Transform
  • Shape Adaptive Matching Pursuits

• Critically Sampled

  • # transformed = # object pixels
  • SA-DCT (1989 - > 1995 -> 1998)
  • POCS (Projection on to Convex Sets)

• Minimize DC-leakage into high bands

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