基于彩色数字图像技术的矿物反射率计算模型研究  

Research on calculating model of mineral reflection index based on color digital image technique

作　　者：邱贵宝[1] 吕学伟[1] 白晨光[1] 温良英[1] 黄青云[1] 梁栋[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《冶金分析》2008年第5期5-9,共5页Metallurgical Analysis

基　　金："973计划"资助项目(2007CB13503);重庆大学研究生科技创新项目(200701Y1B0020188)

摘　　要：针对目前钢铁冶金领域矿相测试方法中反射率测定存在问题,首先,从矿物反射率的定义和矿相显微镜的成像原理出发,结合RGB(红、绿、蓝)和HSI(色调、饱和度、亮度)颜色模型关系,推导出了利用矿物数字显微图像计算反射率的理论数学模型,并通过实验对该模型进行了修正,最后,利用数字图像处理技术计算了各种矿物的含量。本数学模型用于一烧结矿的矿相组成测定,根据所测矿物反射率并结合矿物相关形态结构及其他实验数据,进行综合分析后得出该矿主要由赤铁矿、铁酸钙和硅酸盐组成,这与常规检测方法得到的结果是一致的,说明了该模型用于计算矿物的反射率是准确的,模型设计是合理的。To counter the problem of measuring reflection index in the determination of mineral phase in steel metallurgy field, at first, in light of the definition of the reflection index and the imaging principle combined with RGB（Red-Green-Blue） and HIS（Hue-Saturation-Intensity） color model, a theoretical model of reflection index calculated by mineral＇s digital micro-image is deduced, and then it is revised throuch some experiments. At last, the content of compositions is calculated by digital image processing technique. This theoretical model is applied in the measurement of composition in a sinter ore sample. On the basis of reflection index obtained in the measurement, associated with relative mineral forms as well as other experimental data, comprehensive analysis is performed to get conclusion as following： this mine is composed of hematite, calcium ferrite and silicate, which is consistent with the result obtained by normal method. The conclusion shows that the model is accurate in the calcution of reflection inder and reasonable in its design.

关 键 词：反射率 数字图像处理 颜色模型 计算模型 

分 类 号：TF031[冶金工程—冶金物理化学]