Mr. Kevin Tse Profile

Kevin Tse

at Univ of Hong Kong

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Proceedings Article | 27 February 2015 Paper

Geological applications of machine learning on hyperspectral remote sensing data

C. Tse, Yi-liang Li, Edmund Lam

Proceedings Volume 9405, 940512 (2015) https://doi.org/10.1117/12.2178400

KEYWORDS: Machine learning, Mars Reconnaissance Orbiter, Mars, Minerals, Remote sensing, Spectroscopy, Visible radiation, Spectral resolution, Earth sciences, Infrared radiation

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The CRISM imaging spectrometer orbiting Mars has been producing a vast amount of data in the visible to infrared wavelengths in the form of hyperspectral data cubes. These data, compared with those obtained from previous remote sensing techniques, yield an unprecedented level of detailed spectral resolution in additional to an ever increasing level of spatial information. A major challenge brought about by the data is the burden of processing and interpreting these datasets and extract the relevant information from it. This research aims at approaching the challenge by exploring machine learning methods especially unsupervised learning to achieve cluster density estimation and classification, and ultimately devising an efficient means leading to identification of minerals. A set of software tools have been constructed by Python to access and experiment with CRISM hyperspectral cubes selected from two specific Mars locations. A machine learning pipeline is proposed and unsupervised learning methods were implemented onto pre-processed datasets. The resulting data clusters are compared with the published ASTER spectral library and browse data products from the Planetary Data System (PDS). The result demonstrated that this approach is capable of processing the huge amount of hyperspectral data and potentially providing guidance to scientists for more detailed studies.

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