{"id":81,"date":"2016-04-12T03:31:54","date_gmt":"2016-04-12T03:31:54","guid":{"rendered":"\/wordpress\/?page_id=81"},"modified":"2020-03-02T22:52:02","modified_gmt":"2020-03-02T22:52:02","slug":"why-arent-you-using-hyperspectral-imagery","status":"publish","type":"page","link":"https:\/\/www.legacycorescanning.com\/wordpress\/why-arent-you-using-hyperspectral-imagery\/","title":{"rendered":"“So, why aren’t you using Hyperspectral Imaging?”"},"content":{"rendered":"\n

Hyperspectral Imaging (HSI<\/strong>) is the process by which many (i.e., >50) narrow (e.g., 2-10 nm) samples of the electromagnetic spectrum are measured. So many samples make a representative spectrum. These data can be either collected over reflected (400-3,300 nm) or emitted (>3,300 nm – 15,000 nm) light, or both. The result of collecting all these individual spectra is a cube which can be visualized as in Figure 1. <\/p>\n\n\n\n

\n\n
\"hsi\"<\/figure><\/figure>

<\/p>\n

Figure 1<\/p>\n<\/div>\n\n\n\n

Reflected light is light that originates externally and shines on a material’s surface. This light does one of three things: it’s absorbed, transmitted, or reflected. Since most light penetration is restricted to a few microns, reflected light contains information about the interactions of incoming photons with the surface material. Longer thermal infrared wavelengths (> 3,300 nm) are dominated by emitted light. These are thermal photons emitted by materials with a temperature above absolute zero.<\/p>\n\n\n\n

The wavelength of the light dictates the resolution capabilities of the measured light. Shorter wavelengths (< 1000 nm) called Electronic Effects. These photons interact with an atom’s electron cloud. Absorbance features produced by this interaction are strongly dominated by intervalence charge transfer (IVCT). <\/p>\n\n\n\n

There are a number of diagnostic absorption features between 2,000-2,500 nm. Many of these are combinations and overtones from primary absorption features at wavelengths > 3,300 nm. Thermal wavelengths (> 3,300 nm) measure molecular bond properties, i.e., bending, twisting, and stretching of molecules.<\/p>\n\n\n\n

Below are examples of using Hyperspectral Imagery to find Rare Earth Elements. <\/p>\n\n\n\n

All images can be clicked on to enlarge.<\/p>\n\n\n\n

<\/a><\/p>\n\n\n\n

Microscope <\/span><\/b> (click on photograph to enlarge)<\/strong> <\/p>\n\n\n\n

\"ThinSection2\"<\/a><\/figure><\/div>\n\n\n\n
\"ThinSection1\"<\/a><\/figure><\/div>\n\n\n\n
\"ThinSectionNd\"<\/a><\/figure><\/div>\n\n\n\n
\n\n\n\n

Handsample<\/span><\/b> (click on photograph to enlarge)<\/strong><\/p>\n\n\n\n

\"\"<\/a><\/figure><\/div>\n\n\n\n
\"\"<\/a><\/figure><\/div>\n\n\n\n
\"\"<\/a><\/figure><\/div>\n\n\n\n
\n\n\n\n

<\/a><\/p>\n\n\n\n

Airborne\u00a0–\u00a0AVIRIS<\/span><\/b> (click on photograph to enlarge)<\/strong> <\/p>\n\n\n\n

\"AVIRISmtnPassFlightLineLoc\"<\/figure><\/div>\n\n\n\n

<\/p>\n\n\n\n

\"AVIRISmtnPassFlightLine\"<\/a><\/figure><\/div>\n\n\n\n

<\/p>\n\n\n\n

\"AVIRISmtnPassFlightLineLnNd\"<\/a><\/figure><\/div>\n\n\n\n
\n\n\n\n

Satellite – Hyperion Imagery<\/span><\/b><\/p>\n\n\n\n

Mountain Pass, California<\/span><\/b> (click on photograph to enlarge)<\/strong> <\/p>\n\n\n\n

\"HyperionMtnPass1\"<\/a><\/figure><\/div>\n\n\n\n
\"HyperionMtnPassSm\"<\/a><\/figure><\/div>\n\n\n\n
\"HyperionMtnPassNd\"<\/a>
Neodymium<\/figcaption><\/figure><\/div>\n\n\n\n
\n\n\n\n

Bayan Obo Mine, China<\/span><\/b> (click on photograph to enlarge)<\/strong> <\/p>\n\n\n\n

\"HyperionBayanOboMap\"<\/a><\/figure><\/div>\n\n\n\n
\"Baiyunebo_ast_2006181\"<\/a>
Bayan Obo Mine, AKA, Baiyunebo<\/figcaption><\/figure><\/div>\n\n\n\n
\"HyperionBayanOboNd\"<\/a>
Neodymium + other Light REE<\/figcaption><\/figure><\/div>\n\n\n\n
\"HyperionBayanOboSm\"<\/a>
Samarium<\/figcaption><\/figure><\/div>\n\n\n\n
\"HyperionBayanOboDy\"<\/a>
Dysprosium<\/figcaption><\/figure><\/div>\n\n\n\n
\"HyperionBayanOboEu\"<\/a>
Europium<\/figcaption><\/figure><\/div>\n\n\n\n
\n","protected":false},"excerpt":{"rendered":"

Hyperspectral Imaging (HSI) is the process by which many (i.e., >50) narrow (e.g., 2-10 nm) samples of the electromagnetic spectrum are measured. So many samples make a representative spectrum. These data can be either collected over reflected (400-3,300 nm) or emitted (>3,300 nm – 15,000 nm) light, or both. The result of collecting all these … Continue reading “So, why aren’t you using Hyperspectral Imaging?”<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-81","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.legacycorescanning.com\/wordpress\/wp-json\/wp\/v2\/pages\/81"}],"collection":[{"href":"https:\/\/www.legacycorescanning.com\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.legacycorescanning.com\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.legacycorescanning.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.legacycorescanning.com\/wordpress\/wp-json\/wp\/v2\/comments?post=81"}],"version-history":[{"count":84,"href":"https:\/\/www.legacycorescanning.com\/wordpress\/wp-json\/wp\/v2\/pages\/81\/revisions"}],"predecessor-version":[{"id":2286,"href":"https:\/\/www.legacycorescanning.com\/wordpress\/wp-json\/wp\/v2\/pages\/81\/revisions\/2286"}],"wp:attachment":[{"href":"https:\/\/www.legacycorescanning.com\/wordpress\/wp-json\/wp\/v2\/media?parent=81"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}