Boundary-Preserving Depth Upsampling Without Texture Copying Artifacts and Holes

In this paper, we propose boundary-preserving depth upsampling without texture copying artifacts and holes. Since high-resolution (HR) color images contain many edges and textures, they inevitably cause artifacts such as texture copying when they are used in depth upsampling. Thus, we perform rolling guidance filtering on HR color images before depth upsampling to preserve object boundaries in depth maps while successfully removing texture copying artifacts. Moreover, upsampled depth maps are often corrupted by noise and contain holes along object boundaries. Thus, we utilize fast weighted median filtering after depth upsampling to remove noise and fill holes. Experimental results demonstrate that the proposed method achieves boundary-preserving depth upsampling results without texture copying artifacts and holes through visual and quantitative evaluations.