摘要
提出了一个基于 MPEG 4的快速高效存储的 DCT视频编码器 ,用他把一个 H.2 61视频数据流转换为一个低比特率、低空间分辨率的 MPEG4流 ,并进行无线视频处理。和现有编码器相比 ,他不仅能够大大地节省实际需要存储空间 ,计算复杂度也降低了许多 ,实验结果表明设计的编码器得到的视频质量与象素领域方法得到的视频质量相当。
In this paper, we propose a fast and memory efficient DCT domain video encoder to convert a H.261 video bit stream into a low bit rate MPEG4 stream with low spatial resolution for wireless video access. Compared to existing approaches, the proposed video encoder can save more required memory. Furthermore, the computational complexity of the proposed method is less than a lot of that required by existing methods. However, the video quality achieved by the proposed method and by existing methods is hardly distinguishable, as shown in our experimental results.
出处
《现代电子技术》
2004年第19期35-37,40,共4页
Modern Electronics Technique
基金
江苏省南通市制造业信息化计划项目 (C30 1 9)
