Reduced memory multi-layer multi-component rate allocation for JPEG2000

Prajit Kulkarni, Ali Bilgin, Michael W. Marcellin, Joseph C. Dagher, Thomas Flohr, Janet Rountree

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

Remote sensing images are often multispectral in nature and are acquired by on-board sensors in a "push-broom" fashion. These images are compressed and transmitted to ground stations for further analysis. Since they are extremely large, buffering all acquired data before encoding requires huge amounts of memory and introduces latency. Incremental compression schemes work on small chunks of raw data as soon as they are acquired and help reduce buffer memory requirements. However, incremental processing leads to large variations in quality across the reconstructed image. We propose two "leaky bucket" rate control algorithms that can be employed for incrementally compressing hyperspectral images using JPEG2000. Both schemes perform rate control using the fine granularity afforded by JPEG2000. The proposed algorithms have low memory requirements and enable SNR scalability through the use of quality layers. Experiments show that the proposed schemes provide significant reduction in quality variation with no loss in mean overall PSNR performance.

Original languageEnglish (US)
Article number13
Pages (from-to)139-150
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5685
Issue numberPART 1
DOIs
StatePublished - Jul 21 2005
EventProceedings of SPIE-IS and T Electronic Imaging - Image and Video Communications and Processing 2005 - San Jose, CA, United States
Duration: Jan 18 2005Jan 20 2005

Keywords

  • Hyperspectral imagery
  • Image compression
  • Incremental processing
  • JPEG2000
  • Rate allocation

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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