| 遥感图像处理中比值法的解析及其应用 |
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| 引用本文： | 王海平,于志鸿,等.遥感图像处理中比值法的解析及其应用[J].地质论评,1992,38(1):82-89. |
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| 作者姓名： | 王海平 于志鸿 |
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| 作者单位： | 中国地质科学院矿床地质研究所 北京 |
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| 摘 要： | 本文从物理光学的基本数学模型出发，将卫星图像分解成直接光照区和阴影区两个分模型，运用朗伯面的光照原理，说明经大气散射校正后的比值图像与照度、太阳入射角和漫射光无关。这种图像处理技术可加大地物光谱反差、消除阴影效应、有效地区分同一属性的地质体并可判译可能与矿化有关的色形图像异常。文章结合作者近年来对遥感构造研究的部分成果，表明经大气散射校正后的比值图像，对华南与钨锡矿化有关的隐伏或半隐伏小岩体的蚀变带、华北金伯利岩及其共生的碱性岩脉的预测有着广泛的应用前景。
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| 关 键 词： | 比值处理 朗伯面 大气散射校正 光学处理 彩色编码 遥感图像 |
THE ANALYSIS OF THE RATIO METHOD OF LANDSAT IMAGE PROCESSING AND ITS APPLICATION |
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| Wang Haiping,Yu Zhihong,Liu Zhongping Institute of Mineral Deposits,Chinese Academy of Geological Sciences,Beijing.THE ANALYSIS OF THE RATIO METHOD OF LANDSAT IMAGE PROCESSING AND ITS APPLICATION[J].Geological Review,1992,38(1):82-89. |
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| Authors: | Wang Haiping Yu Zhihong Liu Zhongping Institute of Mineral Deposits Chinese Academy of Geological Sciences Beijing |
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| Abstract: | The ratio processing is one of the methods exhancing the landsat images. Bymeans of an analysis of the ratio method with the mathematical concept and themathematical model, the authors consider that the ratio image is not related tothe illuminance (I), sun elevation (E), normal line verctor of the ground (Q) anddiffuse light (D), but only bound up with the ground reflectance. Therefore, it ispossible to apply the ratio image in distinguishing the characteristics of a geolo-gical body on the ground. The authors think that it is necessary to make an atmo-spheric correction before ratio processing. The paper presents the ratio effectiveness in finding mineral image abnor-malities with some examples which have been worked out by the authors. |
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| Keywords: | ratio processing Lambert surface atmospheric dispersion correction colour--numbering |
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