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Title: Edge-adaptive upsampling of depth map videos for enhanced free viewpoint video quality
Authors: Ekmekcioglu, Erhan
Mrak, Marta
Worrall, Stewart T.
Kondoz, Ahmet
Keywords: Free viewpoint video
3D video
View synthesis
Issue Date: 2009
Publisher: © IET
Citation: EKMEKCIOGLU, E. ... et al., 2009. Edge-adaptive upsampling of depth map videos for enhanced free viewpoint video quality. Electronics letters, 45 (7), pp.353-354.
Abstract: Quality enhancement of free-viewpoint videos is addressed for 3D video systems that use the colour texture video plus depth map representation format. More specifically, a novel and efficient shape adaptive filter is presented for upsampling depth map videos that are of lower resolution than their colour texture counterparts. Either measurement or estimation of depth map videos can take place at lower resolution. At the same time, depth map reconstruction takes place at low resolution if reduced resolution compression techniques are utilised. The proposed design is based on the observation that significant transitions in depth intensity across depth map frames influence the overall quality of generated free-viewpoint videos. Hence, sharpness and accuracy in the free-viewpoint videos rendered using 3D geometry via depth maps, especially across object borders, are targeted. Accordingly, significant enhancement of rendered free-viewpoint video quality is obtained when the proposed method is applied on top of MPEG spatial scalability filters.
Description: Closed access.
Version: Published
DOI: 10.1049/el.2009.3682
URI: https://dspace.lboro.ac.uk/2134/22747
Publisher Link: http://dx.doi.org/10.1049/el.2009.3682
ISSN: 0013-5194
Appears in Collections:Closed Access (Loughborough University London)

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