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A scalable discrete wavelet transform architecture based on the B-spline factorisation is presented. In
particular, it is shown that several wavelet filters of practical interest have a common structure in the distributed
part of their B-spline factorisation. This common structure is effectively exploited to achieve scalability and to
save multipliers compared with a direct polyphase B-spline implementation. Since the proposed solution is
more robust to coefficient quantisation than direct polyphase B-spline, it features further complexity
reduction. Synthesis results are reported for a 130-nm CMOS technology to enable accurate comparison with
other implementations. Moreover, the performance of the new wavelet transform architecture, integrated in a
complete JPEG2000 model, has been collected for several images
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