Depth map, with per-pixel depth values, represents the relative distance between object in the scene and the capturing depth camera. Hence, it has been widely used in 3D applications and Depth Image-Based Rendering (DIBR) technique to provide an immersive 3D and free-viewpoint experience to the viewers. Depth maps could be generated by using software- or hardware-driven techniques. However, most generated depth maps suffer from a combination of the following shortcomings: noise, holes and limited spatial resolution. Therefore, to tackle the limited spatial resolution problem of Time-of-Flight depth images, in this paper, we present a planar-surface-based depth map super-resolution approach, which interpolates depth images by exploiting the equation of each detected planar surface. Aided with these equations the surfaces will be categorized into three groups, namely: planar surfaces, non-planar surfaces, and finally edges. For the first category the analytical equations of the planar surfaces will be used to super-resolve them, while a traditional interpolation method will be used for the non-planar surfaces, whereas, a combination of the two previous approaches will be used to up-sample edges. Both quantitative and qualitative experimental results demonstrate the effectiveness and robustness of our approach over the benchmark methods.
CITATION STYLE
Tilo, T., Jin, Z., & Cheng, F. (2015). Super-resolution of depth map exploiting planar surfaces. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 9315, pp. 632–641). Springer Verlag. https://doi.org/10.1007/978-3-319-24078-7_65
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