Three‐dimensional modeling of an image‐based GIS to aid land use planning

Abstract

Abstract Three‐dimensional modeling of an image‐based geographic information system is being proposed to assist in land use planning and management operations. The model is composed of several interrelated databases using spatial modeling techniques linking image databases generated from satellite images, digital line graph (DLG) files and aspatial databases which handle the attribute data relating to these spatial data coverages. Image‐based geographic information systems viewed in 3‐D displays provide the user with a more realistic view of landscape conditions. The potential usefulness of this technology in evaluating crop performance due to soil variability as a result of physical, chemical or other toxic problems has been demonstrated. Three‐dimensional displays of an image‐based GIS provide the farm manager with an easily understood view of the landscape and the ability to model conditions that are viewed as potential problems. The images of the farm can be interchanged and/or merged to generate imag...