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Subsetting hyperspectral core imaging data using a graphic-identification based IDL program
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DOI：10.1016/j.cageo.2017.05.009.png)
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Abstract
En 中文
This study presents an IDL program to subset hyperspectral drill core imagery automatically based on graphic identification. A HySpex SWIR-320m-e imager and drill cores from the Xiangshan uranium deposit were used to do an application test. Based on the HySpex images, we found that the ratio variation tolerance of 75%, minimum market size of 37 pixel x 37 pixel (28 mm x 28 mm), and wavelength of 1141.3 nm (band #30) are preferences for the IDL program. The results indicate that the IDL program subsets hyperspectral images with high accuracy and efficiency without consuming additional time during the scanning process. Additionally, deformation of the core box, the material from which the core box is made, and variation in the diameter of the drill core do not significantly affect the quality of the results.
Keywords:
Hyperspectral imaging
HySpex
Drill core
IDL
Subset image
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