地理信息科学总论2012：遥感04.pdf

1.WhatisOBIA? 2.WhyOBIA? 3.OBIA基本原理与方法 4.影像对象生成 5.对象分类 6.目前常用软件 7.基本操作步骤 8.问题讨论 9.基于区域不一致性度量的遥感影像分割参 数优选方法研究 基于对象的遥感影像分析 2 Geographic object-based image analysis (GEOBIA) is a sub-discipline of Geographic Information Science (GIScience) devoted to developing automated methods to partition remote sensing imagery into meaningful image-objects, and assessing their characteristics through spatial, spectral and temporal scales, so as to generate new geographic information in GIS-ready format. Essentially, GEOBIA provides a way to move from simply collecting images of our planet, to creating geo- intelligence. Hay, G. J., Castilla. Geographic Object-based Image Analysis (GEOBIA): a new name For a new discipline. In Object-based Image Analysis: Spatial Concepts for Knowledge -Driven Remote Sensing Applications (eds: T. Blaschke, S. Lang, and G. J. Hay). Springer-Verlag Berlin Herdelberg, 2008.  Object‐Oriented （OO ）Analysis, Design, or Programming  Object‐Based Image Analysis （OBIA ）或者Geographic‐ Object Based Image Analysis （GEOBIA ） L. Bian, 2007. Object-oriented representation of environmental phenomena: Is everything best represented as an object? Annals of the Association of American Geographers , 97(2): 267~281 基于对象的遥感影像分析 4 基于对象的遥感影像分析 5 难以有效解决“异物同谱”和“同物异谱” 问题 难以有效解决“椒盐现象”所带来的制图问题 难以集成地物形状、大小、上下文关系等特征进行综合的地 物信息提取 影像目视解译的工作量增加，以致难以承受 数据量的急剧增长  以往发展的基于像元的影像分析方法需要消耗大量的计算机资源，同样 难以为继 地物细节信息增加  以往的分类体系不再适用 影像分析重新重新退回人工目视解译时代 基于对象的遥感影像分析 6 影像分辨率与地物 细节层次的关系 Lands