Using SenseCam to pursue "ground truth" for global positioning system travel surveys

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Global Positioning System (GPS) surveys have been conducted for the past decade. Although GPS records were initially regarded as providing "ground truth" of travel, it has been found subsequently that they have some errors. SenseCam, a small passive digital camera, provides a chance to pursue ground truth by capturing images every 20. s on average. This paper discusses how SenseCam could help GPS data collection and shows potential benefits for both SenseCam and GPS research. This paper also investigates the performance of GPS devices in detail in terms of recording data by comparisons between GPS results and SenseCam images. The specific issue of missing GPS data is discussed and examined in this paper.

Original languageEnglish (US)
Pages (from-to)76-81
Number of pages6
JournalTransportation Research Part C: Emerging Technologies
StatePublished - May 2014
Externally publishedYes


  • GPS
  • Ground truth
  • SenseCam
  • Travel behaviour
  • Travel surveys

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Transportation
  • Computer Science Applications


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