Improved Interlayer Prediction for Scalable Video Coding
Wenxian Yang, Gagan Rath, Christine M. Guillemot · 2007
In this paper, we present a novel technique for efficient compression of enhancement layers in scalable video coding (SVC). First we propose an improved interlayer prediction scheme which exploits the inherent redundancy of the underlying Laplacian pyramid with nonbiorthogonal filters. Secondly we introduce an orthogonal transform in parallel with the current 4×4 transform to improve the coding efficiency of the enhancement layer further. The improved prediction and the transform are implemented in the SVC reference software JSVM 4.0 as additional prediction modes. Experimental results demonstrate coding gains up to 1 dB for I pictures, and up to 0.7 dB for both I and P pictures, over a current implementation.