Document Type
Article
Publication Version
Version of Record
Publication Date
7-2017
Keywords
: Landsat-8; Sentinel-2; 20-m resolution; downscaling; image registration; resampling
Description
The Landsat 15-m Panchromatic-Assisted Downscaling (LPAD) method to downscale Landsat-8 Operational Land Imager (OLI) 30-m data to Sentinel-2 multi-spectral instrument (MSI) 20-m resolution is presented. The method first downscales the Landsat-8 30-m OLI bands to 15-m using the spatial detail provided by the Landsat-8 15-m panchromatic band and then reprojects and resamples the downscaled 15-m data into registration with Sentinel-2A 20-m data. The LPAD method is demonstrated using pairs of contemporaneous Landsat-8 OLI and Sentinel-2A MSI images sensed less than 19 min apart over diverse geographic environments. The LPAD method is shown to introduce less spectral and spatial distortion and to provide visually more coherent data than conventional bilinear and cubic convolution resampled 20-m Landsat OLI data. In addition, results for a pair of Landsat-8 and Sentinel-2A images sensed one day apart suggest that image fusion should be undertaken with caution when the images are acquired under different atmospheric conditions. The LPAD source code is available at GitHub for public use.
Publication Title
Remote Sensing
Volume
9
Issue
7
First Page
755
DOI of Published Version
10.3390/rs9070755
Pages
18
Type
text
Format
application/pdf
Language
en
Publisher
MDPI
Rights
Copyright © The Author(s)
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Li, Zhongbin; Zhang, Hankui K.; Roy, David P.; Yan, Lin; Huang, Haiyan; and Li, Jian, "Landsat 15-m Panchromatic-Assisted Downscaling (LPAD) of the 30-m Reflective Wavelength Bands to Sentinel-2 20-m Resolution" (2017). GSCE Faculty Publications. 25.
https://openprairie.sdstate.edu/gsce_pubs/25