UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data grouped in the sections named "Externally Awarded" or "Internally Disbursed" (shown on the profile page) to your Research Finance Administrator. Your can find your Research Finance Administrator at https://www.ucl.ac.uk/finance/research/rs-contacts.php by entering your department
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
Incremental Refinement of Computation for the Discrete Wavelet Transform
  • Publication Type:
    Conference
  • Authors:
    Andreopoulos Y, van der Schaar M
  • Publisher:
    IEEE
  • Publication date:
    2007
  • Place of publication:
    Piscataway, US
  • Pagination:
    53, 56
  • Published proceedings:
    2007 IEEE International Conference on Image Processing: ICIP 2007: Proceedings: September 16-19, 2007, San Antonio, Texas, U.S.A.
  • Volume:
    4
  • ISBN-13:
    9781424414376
  • Status:
    Published
  • Language:
    English
  • Keywords:
    decomposition, discrete wavelet transforms, quantisation (signal), signal reconstruction, signal representation
Abstract
Contrary to the conventional paradigm of transform decomposition followed by quantization, we investigate the computation of two-dimensional discrete wavelet transforms (DWT) under quantized representations of the input source. The proposed method builds upon previous research on approximate signal processing and revisits the concept of incremental refinement of computation: Under a refinement of the source description (with the use of an embedded quantizer), the computation of the forward and inverse transform refines the previously-computed result thereby leading to incremental computation of the output. We study for which input sources (and computational-model parameters) can the proposed framework derive identical reconstruction accuracy to the conventional approach without any incurring computational overhead. This is termed successive refinement of computation, since all representation accuracies are produced incrementally under a single (continuous) computation of the refined input source and with no overhead in comparison to the conventional calculation approach that specifically targets each accuracy level and is not refinable.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Researchers
Author
Dept of Electronic & Electrical Eng
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by