Development and application of multiscale object-based approaches for remote sensing landcover analysis and resource management

用于遥感土地覆盖分析和资源管理的多尺度基于对象的方法的开发和应用

• 批准号: 327225-2006
• 负责人: Hay, Geoffrey
• 金额: $ 1.19万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=365932
• 关键词: Development; application; multiscale; object; based

This planet, and the landscapes it supports are complex systems composed of a large number of heterogeneous components that interact in non-linear ways, are hierarchically structured, spatially correlated and scale dependent. Remote sensing technologies represent the primary source for large area landcover data. Therefore, to fully understand, monitor, model, and manage our interaction within landscapes, we require approaches capable of integrating remote sensing imagery and appropriate multiscale-theory and methods to define landscape components (i.e., scene objects) at their specific scales of expression, and link/evaluate them with related objects at corresponding hierarchical scales. However, there are no objects in remote sensing images, only pixels, the concept of 'landscape' varies between users, there is no 'science of scale', nor are there fixed scaling laws or rules for translating data between scales. In a concerted effort to overcome these challenges the goal of my scientific program is to develop and apply innovative multiscale object-based approaches using remote sensing, geographic information systems, high-performance computing and geo-visualization. This will result in enhanced theory and understanding of landscape structure and dynamics at multiple scales, and innovative new tools and methods to better assess and manage complex environments. Specific projects focus on forest landscapes and the development of multiscale object-based tools for (i) improved forest biomass/carbon estimates, (ii) stratified forest sampling schemes to extend expensive LiDAR (Light Detection and Ranging) estimates over larger areas, and (iii) computer assisted forest inventory updating from individual trees, to stands and regions. This research program will take advantage of high-profile remote sensing data sets, high-performance computing, and collaborative research with experts in national and international projects (i.e., EOSD, and NFI). Considerable training of highly qualified personnel will be achieved (1 PDF, 4 PhD, 8 MSc students and 5 Field/Research Assistants).

这个星球及其支持的景观是由大量异质成分组成的复杂系统，这些成分以非线性方式相互作用，具有层次结构、空间相关性和尺度依赖性。遥感技术是大面积土地覆盖数据的主要来源。因此，为了充分理解、监测、建模和管理我们在景观中的相互作用，我们需要能够整合遥感图像和适当的多尺度理论和方法的方法，以在特定的表达尺度上定义景观成分（即场景对象），并将它们与相应层次尺度上的相关对象链接/评估。然而，遥感图像中没有物体，只有像素，“景观”的概念因用户而异，不存在“尺度科学”，也没有固定的缩放法则或在尺度之间转换数据的规则。为了共同努力克服这些挑战，我的科学计划的目标是利用遥感、地理信息系统、高性能计算和地理可视化来开发和应用创新的多尺度基于对象的方法。这将增强对多个尺度的景观结构和动态的理论和理解，以及更好地评估和管理复杂环境的创新工具和方法。具体项目侧重于森林景观和开发基于对象的多尺度工具，以实现（i）改进森林生物量/碳估算，（ii）分层森林采样方案，以将昂贵的激光雷达（光探测和测距）估算扩展到更大的区域，以及（iii）从单棵树木到林分和区域的计算机辅助森林清单更新。该研究计划将利用备受瞩目的遥感数据集、高性能计算以及与国内和国际项目（即 EOSD 和 NFI）专家的合作研究。将实现大量高素质人才的培训（1名PDF学生、4名博士生、8名硕士生和5名现场/研究助理）。