Fixed-error encoding for bandwidth compression

Robert A. Gonsalves, Alicia Shea, Norman Evans, Thomas S. Huang, Edward Delp

Research output: Contribution to journalArticlepeer-review


We present a DPCM technique that uses a fixed-error approach to minimize the loss of information in compression of a picture. The technique uses an initial N-bit quantization of the image and zero-error encoding of the difference signal. It produces no slope overload and a compression ratio of about 4 to 1. We compare the technique to three other encoding schemes, including a new, one-pass", cosine transform encoder.

Original languageEnglish (US)
Pages (from-to)27-42
Number of pages16
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Dec 7 1978
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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