Lifting parameterisation of the 9/7 wavelet filterbank and its application in lossless image compression
Tilo Strutz · International Conference on Signal Processing · 2009
The description of filter banks using lifting structures does not only benefit low-complexity implementation in software or hardware, but is also advantageous for the design of filter banks because of the guaranteed perfect reconstruction property. This paper proposes a new design method for wavelet filter banks, which is explained based on a single lifting structure suitable for 9/7 filter pairs. The modification of the standard design constraints leads to a family of related filter pairs with varying characteristics. The filters are derived directly, the factorisation of known filters is not necessary. The application of the designed filters to lossless image compression is investigated.