Bit allocation for multiview image compression using cubic synthesized view distortion model

2.50
Hdl Handle:
http://hdl.handle.net/10547/292594
Title:
Bit allocation for multiview image compression using cubic synthesized view distortion model
Authors:
Velisavljević, Vladan ( 0000-0001-9980-9368 ) ; Cheung, Gene; Chakareski, Jacob
Abstract:
"Texture-plus-depth" has become a popular coding format for multiview image compression, where a decoder can synthesize images at intermediate viewpoints using encoded texture and depth maps of closest captured view locations via depth-image-based rendering (DIBR). As in other resource-constrained scenarios, limited avail able bits must be optimally distributed among captured texture and depth maps to minimize the expected signal distortion at the decoder. A specific challenge of multiview image compression for DIBR is that the encoder must allocate bits without the knowledge of how many and which specific virtual views will be synthesized at the decoder for viewing. In this paper, we derive a cubic synthesized view distortion model to describe the visual quality of an interpolated view as a function of the view's location. Given the model, one can easily find the virtual view location between two coded views where the maximum synthesized distortion occurs. Using a multi view image codec based on shape-adaptive wavelet transform, we show how optimal bit allocation can be performed to minimize the maximum view synthesis distortion at any intermediate viewpoint. Our experimental results show that the optimal bit allocation can outperform a common uniform bit allocation scheme by up to 1.0dB in coding efficiency performance, while simultaneously being competitive to a state-of-the-art H.264 codec.
Citation:
Velisavljevic, V., Cheung, G. and Chakareski, J. (2011) 'Bit allocation for multiview image compression using cubic synthesized view distortion model', IEEE International Conference on Multimedia and Expo (ICME), Barcelona, Spain, 11-15 July. Barcelona: IEEE, pp.1-6.
Publisher:
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date:
2011
URI:
http://hdl.handle.net/10547/292594
DOI:
10.1109/ICME.2011.6012199
Additional Links:
http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6012199
Type:
Conference papers, meetings and proceedings
Language:
en
ISBN:
9781612843490
Appears in Collections:
Centre for Wireless Research (CWR)

Full metadata record

DC FieldValue Language
dc.contributor.authorVelisavljević, Vladanen_GB
dc.contributor.authorCheung, Geneen_GB
dc.contributor.authorChakareski, Jacoben_GB
dc.date.accessioned2013-05-21T15:12:17Z-
dc.date.available2013-05-21T15:12:17Z-
dc.date.issued2011-
dc.identifier.citationVelisavljevic, V., Cheung, G. and Chakareski, J. (2011) 'Bit allocation for multiview image compression using cubic synthesized view distortion model', IEEE International Conference on Multimedia and Expo (ICME), Barcelona, Spain, 11-15 July. Barcelona: IEEE, pp.1-6.en_GB
dc.identifier.isbn9781612843490-
dc.identifier.doi10.1109/ICME.2011.6012199-
dc.identifier.urihttp://hdl.handle.net/10547/292594-
dc.description.abstract"Texture-plus-depth" has become a popular coding format for multiview image compression, where a decoder can synthesize images at intermediate viewpoints using encoded texture and depth maps of closest captured view locations via depth-image-based rendering (DIBR). As in other resource-constrained scenarios, limited avail able bits must be optimally distributed among captured texture and depth maps to minimize the expected signal distortion at the decoder. A specific challenge of multiview image compression for DIBR is that the encoder must allocate bits without the knowledge of how many and which specific virtual views will be synthesized at the decoder for viewing. In this paper, we derive a cubic synthesized view distortion model to describe the visual quality of an interpolated view as a function of the view's location. Given the model, one can easily find the virtual view location between two coded views where the maximum synthesized distortion occurs. Using a multi view image codec based on shape-adaptive wavelet transform, we show how optimal bit allocation can be performed to minimize the maximum view synthesis distortion at any intermediate viewpoint. Our experimental results show that the optimal bit allocation can outperform a common uniform bit allocation scheme by up to 1.0dB in coding efficiency performance, while simultaneously being competitive to a state-of-the-art H.264 codec.en_GB
dc.language.isoenen
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INCen_GB
dc.relation.urlhttp://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=6012199en_GB
dc.subjectimage codingen_GB
dc.subjectimage textureen_GB
dc.subjectrendering (computer graphics)en_GB
dc.titleBit allocation for multiview image compression using cubic synthesized view distortion modelen
dc.typeConference papers, meetings and proceedingsen
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