Depth map inpainting and super-resolution

Accurate depth maps with good resolution are required in many applications such as interactive view interpolation, 3D TV, robot navigation, human computer interaction, tracking, recognition, free view point rendering (FVR), virtual reality etc. Depth maps are of great interest, as 3D structure of a scene can be efficiently represented by them and they have an important role in representation and transmission of videos in 3D TV. The general issues in depth maps are :
a) The quality of depth maps are very unsatisfactory i.e. low resolution (LR) (due to low-cost scanners).
b) The presence of missing regions or black holes of irregular shapes and sizes around edges due to occlusions and poor reflectivity.
These are the motivations for holefilling and super-resolution (SR) of depth maps.

(a)

(b)

(c)

(d)

Figures (a) and (c) show the depth images with holes, (b) and (d) show the corresponding hole-filled outputs.