Based on the block Slepian-Wolf set partitioning in hierarchical trees (SW-SPIHT), the Wyner-Ziv frames are encoded to get the scalable bit stream.

• 本文方案传承了分布式编码的主要优点，即“编码简单”和一定程度的鲁棒性，同时引进了码流的可伸缩性。