To efficiently perform wavelet transform based on a lifting constitution in a short time.
First-stage temporary data (D1n+2) on a series starting from odd-numbered input data X(2n+5) are calculated by using input data X(2n+4) and X(2n+5) at two points in an objective area A1. In addition, output data Y(2n) are calculated by standardizing calculated final-stage (second-stage) intermediate data S2n in the other objective area A2. Since the calculation of the temporary data (D1n+2) and the standardization performed for calculating the output data Y(2n) are simultaneously performed in parallel with each other, the data (D1n+2) and Y(2n) at the two points are simultaneously calculated within one period (one clock period) of a pixel clock signal PCLK.
Yoshitake Hidetoshi
Takahiro Arita