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Alteration extraction method for imaging high-spectral boring rock core data

A hyperspectral and data technology, applied in the field of hyperspectral remote sensing applications, can solve the problems of hyperspectral alteration extraction that cannot be imaged, and achieve the effect of improving the efficiency of alteration extraction, shortening the extraction time, and improving the objective level

Active Publication Date: 2017-04-19
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

However, The Spectral Geologist can only analyze the spectrum at present, and cannot perform alteration extraction of the imaging hyperspectrum

Method used

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Embodiment Construction

[0020] The present invention is described in further detail below in conjunction with embodiment.

[0021] A method for extracting alteration of imaging hyperspectral borehole core data provided by the present invention, the method comprises the following steps:

[0022] Step 1, place the reference whiteboard and the core sample to be scanned

[0023] A diffuse reflectance white board is placed on the track of the Hyspex imaging hyperspectrometer, and the core samples placed are the core samples from the Xiangshan uranium ore field.

[0024] Step 2, use the hyperspectral scanning system to scan the white board and rock core in step 1 to obtain the original imaging hyperspectral data

[0025] The control system of the Hyspex imaging spectrometer is used to control the imaging spectrometer to scan along the track to obtain the original imaging hyperspectral data of the diffuse reflectance white slab and core.

[0026] Step 3, preprocessing the original imaging hyperspectral da...

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Abstract

The invention discloses an alteration extraction method for imaging high-spectral boring rock core data, and belongs to the field of high-spectral remote sensing application. The method comprises that a reference whiteboard and a rock core sample to be scanned are placed; the whiteboard and a rock core are scanned via a high spectrum, and original imaging high-spectral data is obtained; the original imaging high-spectral data is preprocessed to obtain imaging high-spectral reflectivity data; the format of the imaging high-spectral reflectivity data is converted to obtain data of a BIP format; the format of the BIP data is further converted to obtain ENVI Spectral Library data; spectral analysis is carried out on the ENVI Spectral Library data via software The Spectral Geologist, and an alteration analysis result is obtained; and format conversion is carried out on the alteration analysis result to obtain an alteration extracted image. The method can be used to extract imaging high-spectral rock core scanning data automatically.

Description

technical field [0001] The invention belongs to the application field of hyperspectral remote sensing, and in particular relates to a method for extracting alteration of imaging hyperspectral drilling core data. Background technique [0002] Hyperspectral core drilling scanning and alteration extraction are important means to grasp deep fluid activities, and have been widely used in the field of mineralization prediction. Traditional hyperspectral core scanning can only provide true-color pictures and limited spectral information, while imaging hyperspectral scanning realizes the scanning of images and spectra in one, and each pixel contains a spectral curve, which greatly improves the accuracy of alteration extraction. improve. At present, there are many methods for image hyperspectral core alteration extraction, but the interference of expert consciousness is serious. The Spectral Geologist software compiled by the Australian Commonwealth Science and Industry Organizatio...

Claims

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Application Information

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IPC IPC(8): G06T11/00G01N21/25
CPCG01N21/25G01N2201/12G06T11/00
Inventor 邱骏挺
Owner BEIJING RES INST OF URANIUM GEOLOGY
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