Hyperspectral classification
This video presents a simple method for the classification of hyperspectral imagery acquired with a SPECIM hyperspectral camera in the short-wave infrared and which provides reproducible results.
Content:
0 – 10.25 min: Introduction SWIR Specim image
10.25 -16.34 min: Wavelength mapping
16.34 -23.30 min: Decision tree classification
23.30 -33.13 min: Standard decision trees
33.13 – 46.51 min: Summary products & customized decision trees
Tracing fluid pathways with hyperspectral remote sensing
This video presents a case study on the use of hyperspectral remote sensing imagery to study hydrothermal alteration systems in a 3.2 Ga Archean volcano-sedimentary sequence. It show very nicely how subtle differences in the chemical composition of white mica minerals play a key role in the mapping and recognition of a hydrothermal system developed in the Archean times. It also demonstrates the potential for hyperspectral imagery to identify zones where deposition of metals occurred during the time of hydrothermal fluid circulation.
Hydrothermal alteration - a brief explanation
This video explains hydrothermal alteration. The recognition of hydrothermal alteration is important in studies of hydrothermal mineral deposits, geothermal energy resources and early life environments.
No spectroscopy in this video, but information that is relevant for the spectral geologist who studies hydrothermal minerals.
The introduction is based on an example from the book by Roger Taylor titled “Ore Textures, recognition and interpretation.”
Information theory and hydrothermal processes
In this video, I explain how concepts from information theory can be used measure the effects of hydrothermal processes on rocks. The methods are useful in raw materials exploration and early life studies. It is based on a talk that I gave during the Netherlands’ Earth Science Conference in Utrecht 2020. At the end of the talk I will show the syntax for calculating the “Shannon entropy” on images and library spectra in using Hyppy software.
The topic is also explained in the open access publication: Link to article
Remote Detection of Mica-Bearing Rocks
In this video, I follow up on my brief explanation of the remote detection with ASTER satellite imagery of mica-bearing rocks in Southern Madagascar that was shown in the Dutch television program "Bodem in zicht", episode mica.
Link to television program (Dutch)
Link to interview in "UT in the media 2020" video (English)
Infrared Detection of Mica in Make-up
In this video, I follow up on my brief explanation of the infrared detection of mica in make-up that was shown in the Dutch television program "Bodem in zicht," episode mica.
Link to television program (Dutch)
Link to interview in "UT in the media 2020" video (English)