Automatic face color segmentation based rate control for low bit-rate video coding
Automatic face color segmentation based rate control for low bit-rate video coding
复制标题
基于自动面部颜色分割的低比特率视频编码速率控制
DOI：
10.1109/iscas.2003.1205988
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
S. Jitapunkul
中科院分区：
文献类型：
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作者：
D. Tancharoen;H. Kortrakulkij;S. Khemachai;S. Aramvith;S. Jitapunkul
本文针对低码率视频编码应用，提出了基于肤色信息的自动人脸分割和后处理方法。263 TMN8 R-D模型的基础上，结合本文提出的基于动态人脸的码率控制算法，使用自动增强权重设置(AEWS)方案，智能地为人脸区域分配更多的比特数。我们提出的方案对具有不同肤色特征和不同复杂性的各种视频序列都能很好地工作。仿真结果表明，本文提出的编码方案对人脸区域的编码质量明显较高，但对对人的感知不敏感的非人脸区域有一定程度的退化。我们提出的算法也是与H.263兼容的，并且复杂度低，这使得该算法适合用于实时通信。
In this paper, we propose automatic face segmentation based on skin color information and post-processing methods for low bitrate video coding applications. The proposed algorithm is used in conjunction with our proposed dynamic face based rate-control algorithm, based on the H.263 TMN8 R-D model, using an automatic enhancement weight setting (AEWS) scheme to intelligently allocate a higher number of bits to the face region. Our proposed scheme works well with a variety of video sequences, which possess different skin color characteristics and different complexity natures. Simulation results indicate that our proposed scheme encodes the video sequences with visibly higher quality on face regions with some introduced degradation to non-face regions, which are insensitive to human perception. Our proposed algorithm is also H.263 compatible, and of low-complexity, which makes the algorithm suitable for use in real time communications.