Object assisted video coding for video conferencing system

被引：0

作者：

Lai, KC ^{[1
]}

Wong, SC ^{[1
]}

Lun, D ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect & Informat Engn, Ctr Multimedia Signal Proc, Hong Kong, Hong Kong, Peoples R China

来源：

ADVANCES IN MULTIMEDIA INFORMATION PROCESSING - PCM 2002, PROCEEDING | 2002年 / 2532卷

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：

An object-based video coding for video conferencing system is proposed. There are two main processes: segmentation process and face detection process. The segmentation process is used to segment each frame of a video sequence into two non-overlapping regions, namely foreground and background. A novel face detection technique based on chrominance and the contour of the segmented region is applied to the foreground region. Smaller quantization step is used for the facial region to improve viewer's perception while a larger quantization step is used for the background to compensate the coding efficiency. The remaining regions are kept in normal coding quality to prevent degradation of important information other than the facial regio.

引用

页码：510 / 517

页数：8

共 9 条

[1] Face segmentation using skin-color map in videophone applications [J].