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Edge-preserving depth-image-based rendering method
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (Realistic3D)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (Realistic3D)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (Realistic3D)
2012 (English)In: 2012 International Conference on 3D Imaging, IC3D 2012 - Proceedings, 2012, Art. no. 6615113- p.Conference paper (Refereed)
Abstract [en]

Distributionof future 3DTV is likely to use supplementary depth information to a videosequence. New virtual views may then be rendered in order to adjust todifferent 3D displays. All depth-imaged-based rendering (DIBR) methods sufferfrom artifacts in the resulting images, which are corrected by differentpost-processing. The proposed method is based on fundamental principles of3D-warping. The novelty lies in how the virtual view sample values are obtainedfrom one-dimensional interpolation, where edges are preserved by introducing specificedge-pixels with information about both foreground and background data. Thisavoids fully the post-processing of filling cracks and holes. We comparedrendered virtual views of our method and of the View Synthesis ReferenceSoftware (VSRS) and analyzed the results based on typical artifacts. Theproposed method obtained better quality for photographic images and similarquality for synthetic images.

Place, publisher, year, edition, pages
2012. Art. no. 6615113- p.
Keyword [en]
3D, video plus depth, warping, depth-image-based view rendering.
National Category
Signal Processing
URN: urn:nbn:se:miun:diva-18051DOI: 10.1109/IC3D.2012.6615113ScopusID: 2-s2.0-84887863563Local ID: STCISBN: 978-147991580-4OAI: diva2:579530
2012 2nd International Conference on 3D Imaging, IC3D 2012; Liege; Belgium; 3 December 2012 through 5 December 2012; Category numberCFP12IC3-ART; Code 100759
Available from: 2012-12-20 Created: 2012-12-20 Last updated: 2016-10-20
In thesis
1. View Rendering for 3DTV
Open this publication in new window or tab >>View Rendering for 3DTV
2013 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Advancements in three dimensional (3D) technologies are rapidly increasing. Three Dimensional Television (3DTV) aims at creating 3D experience for the home user. Moreover, multiview autostereoscopic displays provide a depth impression without the requirement for any special glasses and can be viewed from multiple locations. One of the key issues in the 3DTV processing chain is the content generation from the available input data format video plus depth and multiview video plus depth. This data allows for the possibility of producing virtual views using depth-image-based rendering. Although depth-image-based rendering is an efficient method, it is known for appearance of artifacts such as cracks, corona and empty regions in rendered images. While several approaches have tackled the problem, reducing the artifacts in rendered images is still an active field of research.


Two problems are addressed in this thesis in order to achieve a better 3D video quality in the context of view rendering: firstly, how to improve the quality of rendered views using a direct approach (i.e. without applying specific processing steps for each artifact), and secondly, how to fill the large missing areas in a visually plausible manner using neighbouring details from around the missing regions. This

thesis introduces a new depth-image-based rendering and depth-based texture inpainting in order to address these two problems. The first problem is solved by an edge-aided rendering method that relies on the principles of forward warping and one dimensional interpolation. The other problem is addressed by using the depth-included curvature inpainting method that uses appropriate depth level texture details around disocclusions.


The proposed edge-aided rendering method and depth-included curvature inpainting methods are evaluated and compared with the state-of-the-art methods. The results show an increase in the objective quality and the visual gain over reference methods. The quality gain is encouraging as the edge-aided rendering method omits the specific processing steps to remove the rendering artifacts. Moreover, the results show that large disocclusions can be effectively filled using the depth-included curvature inpainting approach. Overall, the proposed approaches improve the content generation for 3DTV and additionally, for free view point television.

Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University, 2013. 49 p.
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 101
3DTV, view rendering, depth-image-based rendering, disocclusion filling, inpainting.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
urn:nbn:se:miun:diva-19194 (URN)STC (Local ID)9789187103773 (ISBN)STC (Archive number)STC (OAI)
2013-06-11, L111, Holmgatan10, Sundsvall, 10:15 (English)
Available from: 2013-06-13 Created: 2013-06-12 Last updated: 2016-10-20Bibliographically approved

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Muddala, Suryanarayana MurthySjöström, MårtenOlsson, Roger
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