Filter processing apparatus and its control method, program, and storage medium

摘要: This invention has as its object to suppress an increase in circuit scale and simplify a structure by executing filter process using plurality of arithmetic units each which makes multiplication addition. To achieve this object, image data Yn+2, Yn+3, Yn+4 be processed are read out, three lattice point d′n+1, S′n, dn−1 respectively out from sequences H 1 , 2 3 corresponding line buffers that store the data. d′n+3=Yn+3+α(Yn+2+Yn+4) is computed, d′n+3 stored sequence . S′n+2+β(d′n+1+d′n+3) S′n+2 d′n+1=d′n+1+y(S′n+2+S′n) dn+1 H3. Sn=S′n+δ(dn−1+dn+1) Sn output next processing stage.