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    Optimal rate allocation for view synthesis along a continuous viewpoint location in multiview imaging

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    Authors
    Velisavljević, Vladan
    Cheung, Gene
    Chakareski, Jacob
    Issue Date
    2010
    Subjects
    autoregressive processes
    image texture
    rate allocation
    
    Metadata
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    Abstract
    The authors consider the scenario of view synthesis via depth-image based rendering in multi-view imaging. We formulate a resource allocation problem of jointly assigning an optimal number of bits to compressed texture and depth images such that the maximum distortion of a synthesized view over a continuum of viewpoints between two encoded reference views is minimized, for a given bit budget. We construct simple yet accurate image models that characterize the pixel values at similar depths as first-order Gaussian auto-regressive processes. Based on our models, we derive an optimization procedure that numerically solves the formulated min-max problem using Lagrange relaxation. Through simulations we show that, for two captured views scenario, our optimization provides a significant gain (up to 2dB) in quality of the synthesized views for the same overall bit rate over a heuristic quantization that selects only two quantizers - one for the encoded texture images and the other for the depth images.
    Citation
    Velisavljevic, V., Cheung, G. and Chakareski, J. (2010) 'Optimal rate allocation for view synthesis along a continuous viewpoint location in multiview imaging', Picture Coding Symposium (PCS), Nagoya, Japan, 8-10 December. Nagoya: IEEE, pp.482-485.
    Publisher
    IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
    URI
    http://hdl.handle.net/10547/292597
    DOI
    10.1109/PCS.2010.5702542
    Additional Links
    http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5702542
    Type
    Conference papers, meetings and proceedings
    Language
    en
    ISBN
    9781424471348
    ae974a485f413a2113503eed53cd6c53
    10.1109/PCS.2010.5702542
    Scopus Count
    Collections
    Centre for Wireless Research (CWR)

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