Optimal prefilters for the multiwavelet filter banks
نویسندگان
چکیده
This paper proposes a method to obtain optimal 2-order approximation preserving prefilters for a given orthogonal unbalanced multiwavelet basis. This procedure uses the prefilter construction introduced in [3]. The prefilter optimization scheme exploits the Taylor series expansion of the prefilter combined with the multiwavelet. Using the DGHM multiwavelet with the obtained optimal prefilter, we find that quadratic input signals are annihilated by the high-pass portion of filter bank at the first level of decomposition.
منابع مشابه
Design of Prefilters for Discrete Multiwavelet Transforms - Signal Processing, IEEE Transactions on
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