Low-complexity transform and quantization in H.264/AVC

被引：398

作者：

Malvar, HS ^{[1
]}

Hallapuro, A

Karczewicz, M

Kerofsky, L

机构：

[1] Microsoft Res, Redmond, WA 98052 USA

[2] Nokia Res Ctr, FIN-3372 Tampere, Finland

[3] Nokia Res Ctr, Irving, TX 75039 USA

[4] Sharp Labs Amer, Camas, WA 98607 USA

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY | 2003年 / 13卷 / 07期

关键词：

integer transforms; periodic quantization; quantization; transforms; video coding; video standards;

D O I：

10.1109/TCSVT.2003.814964

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents an overview of the transform and quantization designs in H.264. Unlike the popular 8 x 8 discrete cosine transform used in previous standards, the 4 x 4 transforms in H.264 can be computed exactly in integer arithmetic, thus avoiding inverse transform mismatch problems. The new transforms can also be computed without multiplications, just additions and shifts, in 16-bit arithmetic, thus minimizing computational complexity, especially for low-end processors. By using short tables, the new quantization formulas use multiplications but avoid divisions.

引用

页码：598 / 603

页数：6