Research Article

Shift Unitary Transform for Constructing Two-Dimensional Wavelet Filters

Table 2

The coefficients of a high-pass wavelet filter ( 𝑑 1 ( 𝑖 , 𝑗 ) ) associated with the low-pass wavelet filter in Table 1.

𝑑 1 ( 𝑖 , 𝑗 ) 𝑗 = 0 𝑗 = 1 𝑗 = 2 𝑗 = 3

𝑖 = 0 0.009322 0.025190 −0.111841 −0.302214
𝑖 = 1 −0.011448 −0.030935 −0.091071 −0.246090
𝑖 = 2 −0.054787 0.020275 0.657306 −0.243250
𝑖 = 3 0.067282 −0.024899 0.535237 −0.198076