Towards efficient satellite image time series analysis: Combination of dynamic time warping and quasi-flat zones

Jonathan Weber, Francois Petitjean, Pierre Gancarski

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

5 Citations (Scopus)

Abstract

Satellite Image Time Series (SITS, for short) are useful resources for Earth monitoring. Upcoming satellites will provide a global coverage of the Earth's surface with a short revisit time (five days); a huge amount of data to analyze will be produced. In order to be able to analyze efficiently and accurately these images, new methods have to be designed. In this article, we propose to combine a spatio-temporal segmentation pre-processing method - quasi-flat zones, which have been recently extended to video analysis - and the distortion power of DTW to simplify the representation of the SITS, in order to reduce both the time and the memory consumption. Experiments carried out on a series of 46 images show that the memory consumption can be reduced by an order of magnitude without reducing the relevance of the analysis.

Original languageEnglish
Title of host publicationIGARSS 2012 - 2012 IEEE International Geoscience and Remote Sensing Symposium
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages4387-4390
Number of pages4
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventIEEE International Geoscience and Remote Sensing Symposium 2012 - International Congress Centre, Munich, Germany
Duration: 22 Jul 201227 Jul 2012
Conference number: 32nd
http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6334512 (IEEE Conference Proceedings)

Conference

ConferenceIEEE International Geoscience and Remote Sensing Symposium 2012
Abbreviated titleIGARSS 2012
CountryGermany
CityMunich
Period22/07/1227/07/12
Internet address

Keywords

  • Crops
  • Image classification
  • Image segmentation
  • Remote Sensing
  • Time series analysis

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