Raster mapping of topographic parameters derived from high resolution Digital Elevation Models

Yi Hua Wang, Yi Hsing Tseng

Research output: Contribution to conferencePaperpeer-review

Abstract

Meter-level resolution Digital Elevation Models (DEMs) have become widely available since airborne LiDAR systems are popular. Although displaying high-resolution DEMs with stereo viewing screen allows us to realistically experience the topographic changes, it is difficult to overlay or inter-analyze with other thematic maps. This study devotes to the theory of deriving topographic parameters from high-resolution DEMs and the visualization of the parameters as raster maps, such as hillshade maps, slope maps, aspect maps, openness maps and multi-directional hillshade maps and so on. These maps enable users to observe topographic features with two-dimensional maps. For demonstration, maps of some example topographic parameters are generated with the Global Mapper. The characteristics and advantages of each topographic parameter will be analyzed through a visual investigation of the maps. The tint scheme and color continuity of multiple frames will be discussed as well. The combination of multiple topographic parameters into a map will also be assessed to display topographic information, which meets the requirements of some particular applications. This study is expected to be useful for a variety of applications of high-resolution DEMs.

Original languageEnglish
Publication statusPublished - 2015 Jan 1
Event36th Asian Conference on Remote Sensing: Fostering Resilient Growth in Asia, ACRS 2015 - Quezon City, Metro Manila, Philippines
Duration: 2015 Oct 242015 Oct 28

Other

Other36th Asian Conference on Remote Sensing: Fostering Resilient Growth in Asia, ACRS 2015
CountryPhilippines
CityQuezon City, Metro Manila
Period15-10-2415-10-28

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

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