基于机器视觉的石英流体包裹体自动识别与指数计算  

Index Calculation and Automatic Identification of Quartz Fluid Inclusions Based on Machine Vision

作　　者：赵毅[1,2,3] 王守敬 郭理想[1,2,3] 朱黎宽 刘磊 ZHAO Yi;WANG Shoujing;GUO LiXiang;ZHU Likuan;LIU Lei(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China;China National Engineering Research Center for Utilization of Industrial Minerals,Zhengzhou 450006,China;China Engineering Technology Innovation Center for Development and Utilization of High Purity Quartz,Ministry of Natural Resources,Zhengzhou 450006,China)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,河南郑州450006 [2]国家非金属矿资源综合利用工程技术研究中心,河南郑州450006 [3]自然资源部高纯石英开发利用工程技术创新中心,河南郑州450006

出　　处：《矿产保护与利用》2022年第5期28-34,共7页Conservation and Utilization of Mineral Resources

基　　金：中国地质调查项目(DD20221698)。

摘　　要：石英中流体包裹体的含量对石英提纯等级及后续石英制品熔炼加工性能有显著影响,传统人工镜下识别石英包裹体特征并定性评价石英流体包裹体含量的方法在其工作效率和量化精度方面存在缺陷。利用机器视觉技术对包裹体显微照片进行石英颗粒的分割提取,使用自主研发的石英流体包裹体量化计算软件对石英颗粒内部流体包裹体特征开展灰度量化统计。为了验证所得计算结果的可靠性,采用美国尤尼明IOTA-STA标准砂作为参比样品并建立其样品数据集,利用随机抽样方法获取了尤尼明标样参考标准值稳定存在的抽样模拟条件及最佳图像采集数量,建立了针对待测石英样品流体包裹体指数的计算方法,并以河南东秦岭地区伟晶岩型高纯石英LD-5号脉体不同采样位置的石英样品为研究对象开展流体包裹体指数计算,结果显示该矿脉石英流体包裹体指数均值为93.09,整个矿脉的流体包裹体指数接近尤尼明标准砂且波动较小,为后续进一步优化找矿目标提供了有益的借鉴和指导。The content of fluid inclusions in quartz has a significant effect on the grade of quartz purification and the subsequent melting processing properties of quartz products.However,the traditional method of identifying quartz inclusions and qualitatively evaluating the content of fluid inclusions under artificial microscope has some defects in its efficiency and quantification accuracy.In this paper,the machine vision technology was used to segment and extract quartz particles from the micrographs of inclusions,and the self-developed quantitative calculation software of quartz fluid inclusions was used to carry out grayscale quantitative statistics on the characteristics of fluid inclusions inside quartz particles.In order to verify the reliability of the calculated results,this paper adopted the IOTA-STA standard sand as the reference sample and then established its sample data set.By the random sampling method,the sampling simulation condition for the stable existence of the reference standard value of the standard sample and the optimal number of image acquisition were obtained,and the calculation method for fluid inclusion index of the measured quartz sample was established.In addition,the fluid inclusion indexes of quartz samples from different sampling locations of pegmatite highpurity quartz LD-5 vein in the Eastern Qinling mountains of Henan Province were calculated.The results showed that the mean fluid inclusion index of LD-5 was 93.09,which was close to the Unimin standard sand and fluctuated slightly.Above all,this work provided useful reference and guidance for further optimization of prospecting target.

关 键 词：高纯石英 机器视觉 流体包裹体 筛选评价 

分 类 号：TD973.3[矿业工程—选矿] TD91