一种流量可控的JPEG2000网络解码方法

为了提高数字节目编辑生产效率和达到素材共享，有必要研究网络化高清非线性编辑中的网络流量控制技术。为了使JPEG2000网络流量可控，讨论了一种基于JPEG2000解码的流量控制方法。它是采用分辨率优先的压缩顺序，并以分辨率级别作为解码参数实施递进的文件读取来实现对网络视频原始数据分级提取。在Mac OS X平台上进行的实验表明，这种方法能有效降低网络流量，并可在客户端得到令人满意的回放效果。

A Flow Controllable Network Decoding Scheme based on JPEG2000

In order to improve the digital program production efficiency and achieve materials sharing, it is necessary to study networked HDTV NLE technologies including network flow control. This paper introduces a decoding scheme for a flow controllable networked high-definition non-linear editing. By taking advantage of resolution scalability and by means of progressive loading, the decoder can fetch the original video data in different transfer rate which is corresponding to the resolution levels included. Implementation and experiments on Mac OS X show that the method can effectively decrease the network traffic, and achieve favorable representation at client.