Compressão de mapas de profundidade usando predição e funções polinomiais

Renam C. da Silva, Luís F. R. Lucas, Eduardo A. B. da Silva, Carla L. Pagliari, Nuno M. M. Rodrigues, Sérgio M. M. Faria

DOI: 10.14209/sbrt.2013.102

Evento: XXXI Simpósio Brasileiro de Telecomunicações (SBrT2013)

Keywords:

Abstract

In techniques that are based on the texture and depth information to generate virtual view, the depth maps have to be represented with a reduced number of bits without compromising the visual quality of virtual view. The coding of maps using flexible segmentation and approximation of the prediction residuals by linear functions (LFP) has achieved promising results. The virtual views generated from maps coded with LFP have better visual quality when compared with others tested algorithms. In this paper we propose to approximate the residue using, in addition to linear functions, quadratic and constant functions. And using trained quantizers for each desired rate. The results obtained by employing the proposed scheme show a superior performance in terms of compression ratio and visual quality of virtual views.

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