Hobart

Seminar Abstract

Friday 2 July 2010, 11.30am (Tas time)
CSIRO Auditorium, Hobart

Chris Jackett
QMS PhD candidate
University of Tasmania/CSIRO
Hobart

Deconvolving and improving the spatial resolution of satellite data using the maximum entropy method

Monitoring coastal environments is an important component in the sustainable management of regions affected by natural events, human activity and anthropogenic climate change. Satellite instruments provide spectral and spatial imagery which are valuable to the management of these coastal regions. However, every satellite instrument has a unique spatial response function which becomes convolved with the input radiance field and contributes to the overall error in the recorded signal. The presence of detector-based noise further complicates the situation making deconvolution ill-posed. This means that no unique or stable solution exists. Can Information Theory and Statistical Mechanics be used to optimally remove instrument effects from satellite imagery? A maximum entropy based algorithm will be described with the potential to deconvolve and increase the spatial resolution of satellite data in a robust and unbiased manner. Efficient computational techniques such as FFT convolution, wavelet image decomposition, iterative step-size estimation and algorithm multi-threading will be discussed and their impacts on the algorithm will be analysed. The final outcome of this research is to produce a general image processing algorithm that can efficiently, robustly and autonomously deconvolve and spatially enhance data from a wide range of optical instruments.

Seminar recording

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Location:
CSIRO = Marine Laboratories Auditorium, Castray Esplanade, Hobart

For further information, or to schedule a seminar, contact:
To schedule a seminar, contact:
Clothilde Langlais, (Oceanographic seminars) CSIRO Marine and Atmospheric Research (03) 6232 5399
Natalie Kelly, (Biology/Modelling seminars) CSIRO Marine and Atmospheric Research 0438 452 483
Jillian Enraght-Moony, (seminar administrator) CSIRO Marine and Atmospheric Research (03) 6232 5320
Communications Manager, Antarctic Climate and Ecosystems CRC (03) 6226 2265
Tracey Cochrane, Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (03) 6226 2937

Last updated 16/07/10