Wavelet Fidelity Filter (video compression) I have read a specification of Dirac (video compression format). A key element of this format is the use of the discrete wavelet transform. Section 15.6.3 of the specification defines individual wavelets by making use of a lifting scheme. I am interested in the Fidelity filter for improved down-conversion and anti-aliasing. Where did it come from? Is there a paper that describes it?

For convenience, the lifting filters are defined as:


[ −2, 10, −25, 81, 81, −25, 10, −2 ]
[ −8, 21, −46, 161, 161, −46, 21, −8 ]
Eventually, I found the answer in this white paper. I quote:


  The Fidelity filter was specifically developed for VC-2 using an
  exhaustive search process to select a filter set with simple integer
  filter coefficients, limited to 8-bit resolution, and offering good
  alias rejection in both analysis and synthesis operations.