GEZGIN & GEZGIN-2: Adaptive real-time image processing subsystems for earth observing small satellites

Ismailoglu N., Benderli O., Yesil S., Sever R., Okcan B., Sengul O., ...More

1st NASA/ESA Conference on Adaptive Hardware and Systems, İstanbul, Turkey, 15 - 18 June 2006, pp.351-352 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/ahs.2006.49
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.351-352
  • Middle East Technical University Affiliated: Yes


GEZGIN and GEZGIN-2 are real-time multispectral image processing subsystems developedfor BILSAT-1 and RASAT satellites respectively, the first two earth observing small satellites of Turkey. Main functionality of these subsystems is to compress in real-time multi-spectral images received concurrently from imagers, using JPEG2000 Image Compression algorithm. The compression features are controlled through user-supplied parameters uploaded in-orbit, so that the compression rate could be adapted to bandwidth, image quality and other mission requirements. GEZGIN employs both reconfigurable hardware and a DSP processor for image processing, where as the more advanced GEZGIN-2 contains full integration of the JPEG2000 processing path plus other image pre-processing features on reconfigurable hardware, hence offering increased performance and full re-configurability in orbit. Both systems demonstrate space-tailored architectures for implementing image processing functions where adaptability becomes the crucial issue determining robustness, flexibility and survivability of the system.