4 January 2002 Bit plane quantization for scalable video coding
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Abstract
A novel concept for SNR scalability with motion compensation in the enhancement layer is introduced. The quantization of the prediction error at different quantization step sizes is performed in the same loop. This allows the application of bit plane coding if the configuration of the quantizers is appropriately chosen. Since a layered prediction is employed at the encoder a drift can occur at a base layer decoder. The concept is, therefore, extended by a drift limitation operation. In this context, two approaches are investigated. One is based on a modification of the prediction error. In the second approach the drift is controlled by dynamic clipping of the enhancement prediction. The proposed SNR scalability concept is applied to the lowpass band of a wavelet-based video coding scheme. The performance is compared with a conventional approach to SNR scalability with two and three quantization layers, respectively.
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Claudia Mayer, Claudia Mayer, Holger Crysandt, Holger Crysandt, Jens-Rainer Ohm, Jens-Rainer Ohm, } "Bit plane quantization for scalable video coding", Proc. SPIE 4671, Visual Communications and Image Processing 2002, (4 January 2002); doi: 10.1117/12.453038; https://doi.org/10.1117/12.453038
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