Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)

  • 2003.11a
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  • Pages.997-999
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  • 2003
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  • 1226-9743(pISSN)
Korean Society of Remote Sensing (대한원격탐사학회)
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The Effects of JPEG2000 Compression on Automated DSM Generation

  • Shih, Tian-Yuan (Department of Civil Engineering, National Chiao-Tung University) ;
  • Liu, Jung-Kuan (Department of Civil Engineering, National Chiao-Tung University)
  • Published : 2003.11.03
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Abstract

The effects of JPEG2000 compression on automated DSM extraction by using the area-based matching are evaluated in this paper. The influences on DSM heights obtained via PCI Geomatics OrthoEngine module are investigated using a single stereo model of 1:5,000 scale aerial photography at image resolution of 20 ${\mu}$m. The experiment design of elevation errors are computed for a range of compression rates from 2:1 to about 100:1, and the DSM which generated from uncompressed image is used as ‘ground truth’ data for comparison. The experimental results show that the standard deviation ranged from 0.9m to 2.5m with the compression ratio from 2 to 100. It is also observed that there is no significant degradation on DSM accuracy up to the compression ratio of 33.

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