部分反向可解比特流(PBDBS)的自适应切换点定位

Adaptive Localization of Switch Point of Partial Backward Decodable Bit Stream (PBDBS)

本文针对部分反向可解比特流(PBDBS)[1]中的切换点定位问题,提出了一种自适应定位方法,即比特位置法.本方法与H.263编解码器和PBDBS方法作了比较.实验证明,此方法可取得较好的容错性能,可应用于公共交换电话网(PSTN)和无线信道上的视频传输.

This paper puts forward an adaptive localization method that can resolve switch point localization problem in the partial backward decodable bit stream (PBDBS), e.g. bit position method. And we compare this method with the H.263 codec and the original PBDBS method. It has been found that this method can obtain better error resilient performance and can be applied in video transmission over Public Switch Telephone Network (PSTN) and wireless channel.