CEGIS

Multidimensional Representation of Geographic Features publications

Developing high-level constructs for geographic data and feature representation that capture human cognition of geographic space and are efficiently implemented in computer systems is the objective of this project. The project is focused on multidimensional representation, including three-dimensional and temporal object attributes. The initial focus has been on watershed

Developing high-level constructs for geographic data and feature representation that capture human cognition of geographic space and are efficiently implemented in computer systems is the objective of this project. The project is focused on multidimensional representation, including three-dimensional and temporal object attributes. The initial focus has been on watershed

Presentations and Publications from CEGIS

The availability of soil moisture affects plant production potential, rainfall runoff volume, and many other parameters that are of interest to agricultural production, forest management, soil conservation, and watershed management and modeling. Transformations of the spectral reflectance in remotely sensed images may be able to provide significant information on soil

Elevation model - multiscale representation

The above image shows Eastern Great Plans and Central Interior Appalachian landscape features spanning much of Missouri, Illinois, and Indiana as depicted with a 100-meter resolution elevation model overlain with 1:2,000,000-scale hydrographic features.

CEGIS Research Publications and Presentation - 2006-2012

presentation

The above image is a rendering of a lidar-derived digital surface model overlaying a digital elevation model of a forested stream channel in central Iowa. The vegetation makes optical identification of the presence of water in channels difficult. The digital models are being used to measure the structure of vegetation adjacent to channels in an attempt to identify features

The above image is a rendering of a lidar-derived digital elevation model of a low relief stream channel and associated National Hydrography Dataset line features in central Iowa. The low topographic relief makes flow accumulation modeling of surface water difficult. The digital models are being used to measure the structure of stream channels in an attempt to identify