Collaborative Research: A Statistical Learning Tool for the Analysis and Characterization of Mars Topography

协作研究：用于分析和表征火星地形的统计学习工具

• 批准号: 0430208
• 负责人: Tomasz Stepinski
• 金额: $ 22.5万
• 依托单位: Universities Space Research Association
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-01 至 2008-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0430208&HistoricalAwards=false
• 关键词: Collaborative; Research; Statistical; Learning; Tool

The goal of this project is to design and develop a statistical-learning tool (STL) for classification and characterization of topographical features on Mars. Major tools for studying the Martian surface are geomorphic mapping and geologic mapping. The standard approach to perform these mappings is through a manual interpretation of images. This laborious approach severely limits the number of Martian sites amenable to study. The STL automates geomorphic mapping and expedites geologic mapping. Thus, it enables fast and quantitative characterization of large sections of the Martian surface. The SLT uses digital topography instead of images to characterize Martian sites. Different topographical variables are fused into a multi-layer data structure. Each pixel in a site carries an array of local and regional topographic information. The automatic recognition and classification of topographic features is performed at the pixel level. This enables the quantitative characterization and comparison of different topographic formations based on statistics of their constituent pixels. The results can be conveniently visualized by means of thematic maps of topography. The capacity of the SLT can be extended by adding other data types (multispectral images) and by applying it to other planetary surfaces. This methodology has a potential to become a powerful investigative tool with a wide range of applications. To facilitate its adoption by the research community the code that implements the SLT and its documentation will be put in the public domain. The results of this work will be disseminated through new courses, seminar talks, and collaborations with other institutes.

该项目的目标是设计和开发一种统计学习工具（STL），用于对火星地形特征进行分类和表征。 研究火星表面的主要工具是地貌测绘和地质测绘。执行这些映射的标准方法是通过手动解释图像。这种费力的方法严重限制了适合研究的火星地点的数量。 STL 可实现地貌测绘自动化并加快地质测绘速度。 因此，它能够快速、定量地表征火星表面的大部分区域。 SLT 使用数字地形而不是图像来描述火星地点的特征。不同的地形变量被融合成多层数据结构。站点中的每个像素都携带一系列本地和区域地形信息。地形特征的自动识别和分类是在像素级别进行的。这使得能够根据组成像素的统计数据对不同地形形成进行定量表征和比较。结果可以通过地形专题图方便地可视化。 SLT 的容量可以通过添加其他数据类型（多光谱图像）并将其应用于其他行星表面来扩展。这种方法有可能成为具有广泛应用的强大调查工具。为了促进研究界的采用，实现 SLT 的代码及其文档将被置于公共领域。这项工作的成果将通过新课程、研讨会讲座以及与其他机构的合作来传播。