File(s) under permanent embargo
Deconvolution of MODIS imagery using multiscale maximum entropy
journal contribution
posted on 2023-05-17, 09:20 authored by Christopher JackettChristopher Jackett, Turner, PJ, Lovell, JL, Williams, RNA multiscale maximum entropy method (MEM) for image deconvolution is implemented and applied to MODIS (moderate resolution imaging spectroradiometer) data to remove instrument point-spread function (PSF) effects. The implementation utilizes three efficient computational methods: a fast Fourier transform convolution, a wavelet image decomposition and an algorithm for gradient method step-size estimation that together enable rapid image deconvolution. Multiscale entropy uses wavelet transforms to implicitly include an image’s two-dimensional structural information into the algorithm’s entropy calculation. An evaluation using synthetic data shows that the deconvolution algorithm reduces the maximum individual pixel error from 90.01 to 0.34%. Deconvolution of MODIS data is shown to resolve significant features and is most effective in regions where there are large changes in radiance such as coastal zones or contrasting land covers.
History
Publication title
Remote Sensing LettersPagination
179-187ISSN
2150-704XDepartment/School
School of Information and Communication TechnologyPublisher
Taylor & Francis LtdPlace of publication
United KingdomRights statement
Copyright 2011 CSIRO.Repository Status
- Restricted