ADPCM encoding of images using a conjugate gradient based adaptive algorithm

Kyung Sub Joo, Douglas Ray Gschwind, Tamal Bose

Research output: Contribution to journalConference article

1 Scopus citations


A new recursive conjugate gradient (RCG) algorithm is developed for two-dimensional (2-D) adaptive differential pulse code modulation (ADPCM). This algorithm is based on the conjugate gradient method of optimization and therefore has a fast convergence characteristic. The RCG operates on samples of data rather than blocks, and is computationally simpler than the recursive least square (RLS) algorithm. Simulation results illustrate the efficiency of the method in ADPCM encoding of images.

Original languageEnglish (US)
Pages (from-to)1942-1945
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
StatePublished - Jan 1 1996
Externally publishedYes
EventProceedings of the 1996 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP. Part 1 (of 6) - Atlanta, GA, USA
Duration: May 7 1996May 10 1996


ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

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