In H.264/AVC, an integer 4×4 transform is used instead of traditional float DCT transform due to its low complexity and exact reversibility. Combined with the normalization for the integer transform together, a division-free quantization scheme is used in H.264/AVC. H.264/AVC is the most outstanding video coding standard at far. But at first H.264/AVC targets to low bit-rate coding, and almost all experimental results of the proposals for H.264/AVC are tested at low bit-rate. In the near, experimental results show that 8×8 transform can further improve the coding efficiency on high definition (HD) coding. In this paper a kind of 8×8 low complexity integer transforms are studied and corresponding quantization schemes are developed for HD coding. Compared with 4×4 transform/prediction based coder, the proposed 8×8 based coder can achieve better performance on HD coding while with much lower encoder/decoder complexity.
[1]
Truong Q. Nguyen,et al.
Video compression using integer DCT
,
2000,
Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101).
[2]
T. Tran,et al.
The binDCT: fast multiplierless approximation of the DCT
,
2000,
IEEE Signal Processing Letters.
[3]
Truong Q. Nguyen,et al.
Multiplierless approximation of transforms with adder constraint
,
2002,
IEEE Signal Processing Letters.
[4]
Gustavo A. Ruiz,et al.
Parallel-pipelined architecture for 2-D ICT VLSI implementation
,
2003,
Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429).