Parallel two-dimension discrete small wave transform circuit
A two-dimensional discrete wavelet and transform circuit technology, which is used in television, electrical components, image communication, etc., can solve high hardware complexity and system output delay, is not suitable for biorthogonal wavelet transform, and has no versatility, etc. problems, to achieve the effect of easy design and implementation, less system footprint, and less system power consumption
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[0018] The present invention will be described in detail below in conjunction with the drawings and embodiments.
[0019] according to figure 1 The technical scheme of the VLSI design of wavelet transform is given, and the general structure diagram of VLSI design is given. In this embodiment, the lossy compression wavelet filter-CDF (9 / 7) biorthogonal wavelet transform recommended in the IPEG2000 standard is used, and the proposed structure is not only suitable for this type of filter. figure 1 The circuit includes: external memory unit EM, input data serial / parallel conversion interface circuit "S / P conversion", horizontal filter HF, first vertical filter VF1 and second vertical filter VF2, and coefficient regularization unit.
[0020] In this embodiment, first according to figure 1 The proposed structure requires the main module to be a 2-input / 2-output structure. figure 1 The circuit structure includes a horizontal filter and two parallel working vertical filters, the horiz...
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