FILTER PROCESSOR AND FILTER PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a filter processor which is applicable to wavelet transformation or the like in JPEG2000 and is mounted by convolving calculation while having reversibility. SOLUTION: The configuration of two-stage of integer type lifting calculation shown in Fig. (a) is decomposed in the order as shown from Fig. (b) to Fig. (c) and is separated eventually into a real number arithmetic processing part and an integer arithmetic processing part as shown in Fig. (d).