“Voodoo” error prediction for bit-depth scalable video coding
A new prediction method for bit-depth scalable video coding is proposed in this paper. Correlation between the dropped bits during linear scaling tone mapping is used as the basis for using the error as an additional aid in predicting the high bit-depth enhancement layer. The residual to be transmitted in the enhancement layer is reduced by this technique. The effectiveness of this technique is increased when using a small quantization parameter. We show up to a 20% reduction in bit rate of the CAVLC output in our simulation test frames. Bit-depth scalability may be needed in future systems that will support legacy display applications as well as future high dynamic range displays.