VLSI architecture for a new real-time 3D wavelet transform

In this paper a real-time 3-D discrete wavelet transform algorithm is proposed. The inter-frame decomposition is achieved using the last two frames of the sequence. Reduced buffer and real-time applicability makes the algorithm usable for high-speed bi-directional interactive applications of mulitmedia and also HDTV. An efficient VLSI architecture which promises 100% hardware utilization, low buffeting and low hardware complexity is designed for the realization of the 3-D wavelet transform. DWT filters, designed by data-folding architecture and QMF lattice filters are arranged in pipeline to achieve the spatial decomposition with high throughput. A parallel array architecture is used for the decomposition in temporal direction which proves efficient to accomodate the huge amount of data.