Cost effective hardware sharing architecture for fast 1-D 8×8 forward and inverse integer transforms of H.264/AVC high profile

In this paper, the fast one-dimensional (1-D) 8×8 integer transforms and the sharing design for 1-D 8×8 forward and inverse integer transforms of H.264/AVC are proposed by using the matrix operations, which are the row/column permutations, the decompositions with the sparse matrices, and the matrix offset computations. The computational complexities of the proposed fast 1-D 8×8 forward integer transform of H.264/AVC is the same as those of the previous fast methods. By using the proposed fast algorithms with the sharing hardware, the proposed sharing implementation requires lower hardware cost than the individual and separate design for the VLSI realization.