Class allocation for soft-then-hard subpixel mapping algorithms with adaptive visiting order of classes

Qunming Wang, Wen Zhong Shi, Hua Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)


The soft-then-hard subpixel mapping (STHSPM) algorithm is a type of subpixel mapping (SPM) algorithm consisting of soft class value (between 0 and 1) estimation and hard class allocation for each subpixel. This letter presents a new class allocation method for STHSPM algorithm. As an extension of our previous work in which subpixels for classes are decided in units of classes (UOC), the new approach, named adaptive UOC (AUOC), improves UOC with adaptive visiting order of classes. In AUOC, the visiting order of classes within each coarse pixel is determined based on the local structure rather than the global structure in UOC. Experiments on three remote sensing images show that AUOC is able to improve UOC in terms of SPM accuracy, particularly for SPM with small zoom factors.
Original languageEnglish
Article number6716052
Pages (from-to)1494-1498
Number of pages5
JournalIEEE Geoscience and Remote Sensing Letters
Issue number9
Publication statusPublished - 1 Jan 2014


  • Class allocation
  • remote sensing
  • subpixel mapping (SPM)
  • superresolution mapping

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Electrical and Electronic Engineering

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