A Scheme for Spatial Scalability Using Nonscalable Encoders

Rakesh Dugad, Narendra Ahuja

Research output: Contribution to journalArticle

Abstract

We describe a scheme that achieves spatially scalable coding of video by employing nonscalable video encoders (e.g., MPEG-2 main profile), along with a downsampler and an upsampler. The scheme is illustrated for the case of coding video at two resolutions. The enhancement layer is coded in two steps by first exploiting the spatial redundancy and then exploiting the temporal redundancy. Hence, the scheme has a separable implementation. Results are presented for five different sequences, coded for three different combinations of base and enhancement layer bit rates. When MPEG-2 main profile is used for the nonscalable encoders, the results obtained are comparable to the performance of MPEG-2 spatial scalability profile.

Original languageEnglish (US)
Pages (from-to)993-999
Number of pages7
JournalIEEE Transactions on Circuits and Systems for Video Technology
Volume13
Issue number10
DOIs
StatePublished - Oct 1 2003

Keywords

  • Discrete cosine transform (DCT)
  • HDTV
  • MPEG-2
  • Multiresolution coding
  • Scalable video compression
  • Spatial scalability
  • Subband decomposition

ASJC Scopus subject areas

  • Media Technology
  • Electrical and Electronic Engineering

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