“…Recently, El-Sharkawy and Eshmawy [3] presented an efficient matrix factorization for one-dimensional (1-D) recursive pruned DCT (RPDCT) which improves the result of Wang [6] significantly. Later, they [4] extended the proposed method from the 1-D domain to the 2-D domain successfully. Based on the result of [3], the motivation of this research is to present new matrix factorizations for RPDCT in order to gain some computational advantages.…”