Adaptive inter-layer intra prediction in scalable video coding

Abstract

In the scalable video coding (SVC) standard, interlayer intra prediction (ILIP) is one of the most fundamental coding tools used to reduce bit rate. The prediction block of macroblock (MB) in enhancement layer (EL) is obtained by upsampling the co-located base layer (BL) block. In this paper, we propose a new ILIP method by introducing the adaptive signal processing techniques. Adaptive Wiener filters, which are calculated for each frame independently, are used to generate a prediction signal with minimum error energy. On average, a coding gain of 3.6% reduction of bit rate is obtained for QCIF-CIF scenario. Up to 9% bit rate reduction is achieved for CIF-4CIF scenario.