Scalable Distributed Video Coding Using Compressed Sensing in Wavelet Domain

Scalable video coding technologies provide adaptive video applications in heterogeneous and polytropical conditions. However, the highly hierarchical feature makes the loss or unsuccessful recovery of the base-layer to be catastrophic. In this paper, a distributed scalable video coding scheme using the new advances of compressed sensing is proposed to solve this problem at the energy-constrained encoder. The wavelet coefficients of the video frames have inherent fidelity scalability which is utilized in our scheme. Furthermore, the democracy of measurements reduces the risk of base-layer loss over the packet loss channel. Experimental results show that our scheme outperforms the existing scalable compressed sensing scheme by about 2 dB.