一种高效视频编码器的设计

提出了一个基于MPEG-4的快速高效存储的DCT视频编码器的设计原理,用它把一个H.261视频数据流转换为一个低比特率、低空间分辨率的MPEG-4流,并进行无线视频处理.和现有编码器相比,它不仅能够大大节省实际需要的存储空间,计算复杂度也降低了许多,实验结果表明,编码器得到的视频质量与像素领域方法得到的视频质量相当.

Design of an Efficient Video Encoder

In this paper, we propose a principle for the design of DCT domain video encoder with fast and efficient memory. It can convert an H.261 video bit stream into a low bit rate MPEG-4 stream with low spatial resolution for wireless video access. Compared to existing approaches, the proposed video encoder can greatly reduce the required memory space, and its computational complexity is much lower. However, experimental results show that the video quality achieved by the proposed method is equivalent to that achieved by existing methods in pixel domain.