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Development of a New D16 Algorithm for Single Flow Direction Model

  • Wan Muhd Hairi Wan Ab KarimEmail author
  • Mohamad Ghazali Hashim
Chapter
Part of the Lecture Notes in Geoinformation and Cartography book series (LNGC)

Abstract

Currently, D8 algorithm is widely used on raster-based dataset to illustrate the correlation and relationship between a particular pixel with its neighbouring pixels in water flow direction model. Unfortunately, D8 algorithm has some limitations, for instance, it is not being suitable to model flow divergence in ridge area, sub-catchment identification, among others. Several applications on drainage network, agricultural and some construction planning need accurate information of flow direction. Thus, this study tries to develop a new algorithm, which has the capability to improve the efficiency, accuracy, and reliability of the current D8 algorithm on surface Single Flow Direction (SFD) modelling. The proposed algorithm is called D16 algorithm. This D16 algorithm, not only adds eight new flow direction options, but also introduces some rules and equations to overcome the limitations of the current SFD as well as the D8 algorithm. This paper highlights the process of deriving the D16 model, logical structures, equations, comparison results between D8 and D16 algorithm on topographic map, Shuttle Radar Topography Mission (SRTM) and Advance Spaceborne Thermal Emission and Reflection (ASTER) data.

Keywords

D8 algorithm Raster-based dataset Water flow direction Single flow direction model New D16 algorithm 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Wan Muhd Hairi Wan Ab Karim
    • 1
    Email author
  • Mohamad Ghazali Hashim
    • 1
  1. 1.Department of Geoinformation, Faculty of Geoinformation and Real EstateUniversiti Teknologi Malaysia (UTM)Johor BahruMalaysia

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