A Systematic Hardware Sharing Method for Unified Architecture Design of H.264 Transforms

Table 3

The computational complexity of the FOSS architectures for H.264 transforms.

	Sub/adder	Adder	Subtractor	Shifter
1D 8 × 8 forward	0	20	16	10
1D 8 × 8 inverse	0	24	16	18
2D 4 × 4 forward	8	16	16	16
2D 4 × 4 inverse	8	16	16	16
2D 4 × 4 Hadamard	8	16	16	0
2D 2 × 2 Hadamard	0	4	4	0
Total	24	96	84	60