Data preprocessing methods of domestic core spectral scanner CMS350 A
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摘要: 岩心高光谱编录是目前深度挖掘地质资料、实现地质找矿突破的有效支持技术之一.该技术实现了高光谱遥感矿物识别优势与钻探技术深部岩层采样特点的结合.针对国家重大科学仪器设备开发专项"岩心光谱扫描仪研发与产业化"支持研发的国内首台岩心光谱扫描仪CMS350A数据采集机理和获取的岩心图像及光谱数据的特点,对岩心光谱扫描数据预处理方法开展研究,提出了基于标准板的岩心扫描图像增强方法、图谱分析结合的干扰光谱识别和校正技术及岩心自动提取和拼接模型,实现了对岩心光谱扫描数据的实时、可靠处理,为后期岩心光谱分析、理化参数反演和矿物分析等工作奠定了基础.Abstract: Hyperspectrum logging of core is one of the effective techniques for excavating geological data deeply and making a breakthrough in geological prospecting. Using hyperspectral remote sensing technology and deep rock sampling based on drilling technology has the advantages of mineral recognition. The first core scanner CMS350A in China has been developed successfully through the special project of national great scientific instruments and equipment, namely "development and marketing of core spectral scanner". In consideration of the data collecting mechanism and characteristics of acquired core images and spectra by the scanner, the authors focused on developing the data preprocessing methods for the core image and spectrum data. A radiation correction method based on standard plate was developed for core scanning image, an interference spectrum detection and modification technology was proposed, and a model for automatic core image extraction and mosaicking was created to accurately process the data in time. These methods constitute the basis for core spectrum analysis, physic - chemical parameters inversion, and mineral analysis in future.
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Key words:
- core spectral scanner /
- image enhancement /
- core extraction /
- core mosaic /
- spectrum modification
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