Reduction of block-transform image coding artifacts by using local statistics of transform coefficients

Steven S O Choy, Yuk Hee Chan, Wan Chi Siu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

32 Citations (Scopus)

Abstract

This letter presents a new approach to reduce coding artifacts in transform image coding. We approach the problem in an estimation of each transform coefficient from its quantized version with its local mean and variance. The proposed method can reduce much coding artifacts of low bit-rate coded images, and at the same time guarantee that the resulting images satisfies the quantization error constraint.
Original languageEnglish
Pages (from-to)5-7
Number of pages3
JournalIEEE Signal Processing Letters
Volume4
Issue number1
DOIs
Publication statusPublished - 1 Dec 1997

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing

Cite this