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Hybrid light coding for fast and high-accuracy shape acquisition | IEEE Conference Publication | IEEE Xplore

Hybrid light coding for fast and high-accuracy shape acquisition


Abstract:

In this paper we propose a novel rate control initialization algorithm for real-time H.264/scalable video coding. In particular, a two-step approach is proposed. First, t...Show More

Abstract:

In this paper we propose a novel rate control initialization algorithm for real-time H.264/scalable video coding. In particular, a two-step approach is proposed. First, the initial quantization parameter (QP) for each layer is determined by means of a parametric rate-quantization (R-Q) modeling that depends on the layer identifier (base or enhancement) and on the type of scalability (spatial or quality). Second, an intra-frame QP refinement method that allows for adapting the initial QP value when needed is carried out over the three first coded frames in order to take into consideration both the buffer control and the spatio-temporal complexity of the scene. The experimental results show that the proposed R-Q modeling for initial QP estimation, in combination with the intra-frame QP refinement method, provide a good performance in terms of visual quality and buffer control, achieving remarkably similar results to those achieved by using ideal initial QP values.
Date of Conference: 11-14 September 2011
Date Added to IEEE Xplore: 29 December 2011
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Conference Location: Brussels, Belgium

References

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