All-Zero-AC block detection using energy preservation theorem for H.263 video coding

被引：0

作者：

Chen, SD ^{[1
]}

Ramli, AR ^{[1
]}

Mukerjee, MR ^{[1
]}

机构：

[1] Univ Putra Malaysia, Dept Comp & Commun Syst, Fac Engn, Serdang 43400, Selangor Darul, Malaysia

来源：

IEEE 2000 TENCON PROCEEDINGS, VOLS I-III: INTELLIGENT SYSTEMS AND TECHNOLOGIES FOR THE NEW MILLENNIUM | 2000年

关键词：

D O I：

暂无

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

This paper present a technique used in H.263 video coding to detect All-Zero-AC occurrence without performing the transformation and quantization process. It is developed based on the energy preservation theorem. When the total AC energy in pre-transform domain is known, the occurrence of All-Zero-AC is predictable by comparing the total AC energy with the quantization threshold - Q(2). The evaluations indicate that its prediction efficiency and speed gain depends on motion activities, level of Q and also the relative overhead imposed by the shortcut itself In conclusion, the proposed new algorithm is expected to be practical in all common environment (low bit rate) targeted by H.263 standards as no negative speed gain is observed during the evaluation for all range of QP (Q=2.5QP).

引用

页码：A425 / A430

页数：6