Codificação eficiente de mapas de profundidade com base em predição e aproximação linear

This paper studies the problem of depth map compression for 3D video applications, based on virtual view synthesis. In this context, we propose an alternative algorithm to the current image coding standards, which avoids the known problems of depth map compression. The proposed algorithm is based on a flexible segmentation, combined with an hierarchical prediction step, that efficiently represent the objects’ sharp edges. The residue signal is approximated by a linear function. When compared to other alternative algorithms, the experi- ments show that depth maps compressed with our algorithm achieve state-of-the-art performance on virtual view synthesis.