Efficient parallel architecture for lifting-based two-dimensional discrete wavelet transform

An efficient generic architecture for two-dimensional discrete wavelet transform (2-D DWT) with line-based method is proposed with using lifting scheme, in which the parallelism of four subbands transform in lifting-based 2-D DWT is exploited. The proposed architecture is designed to generate 4 subbands coefficients concurrently per clock cycle that :an perform a 1-level decomposition of a N×N image in approximately N²/4 working clock cycles, which has faster throughput rate but requires less hardware cost compared 10 the designs reported in previous literature.