Combining pixel swapping and contouring methods to enhance super-resolution mapping

Yuan Fong Su, Giles M. Foody, Anuar Mikdad Muad, Ke Sheng Cheng

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Combining super-resolution techniques can increase the accuracy with which the shape of objects may be characterised from imagery. This is illustrated with two approaches to combining the contouring and pixel swapping methods of super-resolution mapping for binary classification applications. In both approaches, the output of the pixel swapping method is softened to allow a contour of equal class membership to be fitted to it to represent the inter-class boundary. The accuracy of super-resolution mapping with the individual and combined techniques is explored, including an assessment of the effect of variation in the number of neighbors and zoom factor on pixel swapping based analyses. When combined, the error with which objects of varying shape were represented was typically greatly reduced relative to that observed from the application of the methods individually. For example, the root mean square error in mapping the boundary of an aeroplane represented in relatively fine spatial resolution imagery decreased from 14.41 m with contouring and 4.35 m with pixel swapping to 3.07 m when the approaches were combined.

Original languageEnglish
Article number6335445
Pages (from-to)1428-1437
Number of pages10
JournalIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Volume5
Issue number5
DOIs
Publication statusPublished - 2012

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pixel
Pixels
imagery
Mean square error
spatial resolution
Aircraft
method

Keywords

  • Contour-based approach
  • pixel swapping
  • soft classification
  • super-resolution mapping

ASJC Scopus subject areas

  • Computers in Earth Sciences
  • Atmospheric Science

Cite this

Combining pixel swapping and contouring methods to enhance super-resolution mapping. / Su, Yuan Fong; Foody, Giles M.; Muad, Anuar Mikdad; Cheng, Ke Sheng.

In: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol. 5, No. 5, 6335445, 2012, p. 1428-1437.

Research output: Contribution to journalArticle

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