Utilizing multiple subpixel shifted images in subpixel mapping with image interpolation

Qunming Wang, Wen Zhong Shi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

32 Citations (Scopus)


In this letter, multiple subpixel shifted images (MSIs) were utilized to increase the accuracy of subpixel mapping (SPM), based on the fast bilinear and bicubic interpolation. First, each coarse spatial resolution image of MSI is soft classified to obtain class fraction images. Using bilinear or bicubic interpolation, all fraction images of MSI are upsampled to the desired fine spatial resolution. The multiple fine spatial resolution images for each class are then integrated. Finally, the integrated fine spatial resolution images are used to allocate hard class labels to subpixels. Experiments on two remote sensing images showed that, with MSI, both bilinear and bicubic interpolation-based SPMs are more accurate. The new methods are fast and do not need any prior spatial structure information.
Original languageEnglish
Article number6594805
Pages (from-to)798-802
Number of pages5
JournalIEEE Geoscience and Remote Sensing Letters
Issue number4
Publication statusPublished - 1 Apr 2014


  • Image interpolation
  • remote sensing
  • subpixel mapping (SPM)
  • subpixel shifted images
  • superresolution mapping

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Electrical and Electronic Engineering


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