We included the following sentence and Equation (14) on page 4: “For an (n×m) transform block which has N non-zero coefficients, the total number of additions in the proposed inverse transform using linearity is computed in Equation (14), even though Equation (14) is not used in the proposed method: We included the following Table 3 and 4 and sentences on page 6: Table 3.
We would like to thank the reviewer for the thorough review and very helpful comments.