A 2-D orientation-adaptive prediction filter in lifting structures for image coding

IEEE Trans Image Process. 2006 Jan;15(1):106-11. doi: 10.1109/tip.2005.859369.


Lifting-style implementations of wavelets are widely used in image coders. A two-dimensional (2-D) edge adaptive lifting structure, which is similar to Daubechies 5/3 wavelet, is presented. The 2-D prediction filter predicts the value of the next polyphase component according to an edge orientation estimator of the image. Consequently, the prediction domain is allowed to rotate +/-45 degrees in regions with diagonal gradient. The gradient estimator is computationally inexpensive with additional costs of only six subtractions per lifting instruction, and no multiplications are required.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms*
  • Computer Graphics
  • Data Compression / methods*
  • Image Enhancement / methods*
  • Image Interpretation, Computer-Assisted / methods*
  • Numerical Analysis, Computer-Assisted
  • Signal Processing, Computer-Assisted*