This paper presents a novel strategy for the compression of depth maps. The proposed scheme starts with a segmentation step which identifies and extracts edges and main objects, then it introduces an efficient compression strategy for the segmented regions' shape. In the subsequent step a novel algorithm is used to predict the surface shape from the segmented regions and a set of regularly spaced samples. Finally the few prediction residuals are efficiently compressed using standard image compression techniques. Experimental results show that the proposed scheme not only offers a significant gain over JPEG2000 on various types of depth maps but also produces depth maps without edge artifacts particularly suited to 3D warping and free viewpoint video applications.
Compression of depth information for 3D rendering
ZANUTTIGH, PIETRO;CORTELAZZO, GUIDO MARIA
2009
Abstract
This paper presents a novel strategy for the compression of depth maps. The proposed scheme starts with a segmentation step which identifies and extracts edges and main objects, then it introduces an efficient compression strategy for the segmented regions' shape. In the subsequent step a novel algorithm is used to predict the surface shape from the segmented regions and a set of regularly spaced samples. Finally the few prediction residuals are efficiently compressed using standard image compression techniques. Experimental results show that the proposed scheme not only offers a significant gain over JPEG2000 on various types of depth maps but also produces depth maps without edge artifacts particularly suited to 3D warping and free viewpoint video applications.Pubblicazioni consigliate
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