A lossless compression algorithm for SAR amplitude imagery based on modified quadtree coding of bit plane

Zhigang Pan, Xin Gao, Xiumin Sun, Hongmei Song

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A lossless compression algorithm for synthetic aperture radar (SAR) amplitude images based on modified quadtree bit-plane coding is proposed. First, a SAR amplitude image is divided into independent bit planes, and then, the probability of bit 0 is computed and compared with the predefined threshold in order to select the optimal block size for each bit plane. Finally, a modified quadtree coding method is adopted to encode each block data. Additionally, the computing method of predefined threshold is also addressed in this letter. The experimental results show that the proposed method outperforms previous methods for all SAR images of the test sets; an average 0.895-bpp decrease in bit rate was observed when compared with JPEG-LS. © 2006 IEEE.
Original languageEnglish (US)
Pages (from-to)723-726
Number of pages4
JournalIEEE Geoscience and Remote Sensing Letters
Volume7
Issue number4
DOIs
StatePublished - Oct 1 2010
Externally publishedYes

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Electrical and Electronic Engineering

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