Improved edge detection for EWOC depth upscaling
2012 (English)In: 2012 19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012, IEEE conference proceedings, 2012, 1-4 p.Conference paper (Refereed)
The need for accurate depth information in three-dimen-sional television (3DTV) encourages the use of range sensors,i.e. time-of-ﬂight (ToF) cameras. Since these sensors provideonly limited spatial resolution compared to modern high res-olution image sensors, upscaling methods are much needed.Typical depth upscaling algorithms fuse low resolution depthinformation with appropriate high resolution texture frames,taking advantage of the additional texture information in theupscaling process. We recently introduced a promising up-scaling method, utilizing edge information from the textureframe to upscale low resolution depthmaps. This paper exam-ines how a more thorough edge detection can be achieved byinvestigating different edge detection sources, such as inten-sity, color spaces and difference signals. Our ﬁndings showthat a combination of sources based on the perceptual quali-ties of the human visual system (HVS) leads to slightly im-proved results. On the other hand these improvements implya more complex edge detection.
Place, publisher, year, edition, pages
IEEE conference proceedings, 2012. 1-4 p.
, Systems, Signals and Image Processing (IWSSIP), ISSN 2157-8672 ; 19
3DTV, EWOC, depth map, ToF, upscaling, perceptual edge detection, HVS, CIE2000
IdentifiersURN: urn:nbn:se:miun:diva-16210ScopusID: 2-s2.0-84863949324Local ID: STCISBN: 978-1-4577-2191-5OAI: oai:DiVA.org:miun-16210DiVA: diva2:526700
2012 19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012;Vienna;11 April 2012through13 April 2012;Category numberCFP1255E-ART;Code91138