Atsuyuki Adachi

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This work shows the significance of orthogonality of discrete wavelet transforms (DWTs) in its application to video coding. As well, a novel design method of orthogonal symmetric non-separable DWTs with a lattice structure is proposed. It is known that DWTs employed in JPEG2000 cause flickering artifacts in its low bit-rate video coding applications.(More)
In this paper, a design method of two-dimensional (2-D) orthogonal symmetric wavelets is proposed by using a lattice structure for multi-dimensional (M-D) linear-phase paraunitary filter banks (LPPUFB), which the authors have proposed as a previous work and then modified by Lu Gan et al. The derivation process for the constraints on the second-order(More)
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