HiT: hierarchical triangular model for variable representation of terrain

Myeong Sun Kim, Chang Sung Jeong

    Research output: Contribution to journalConference articlepeer-review

    Abstract

    Representation of terrain at arbitrary level of accuracy is considered as a basic requirement for terrain rendering and ground analysis in a number of visual applications. In all of such applications, there exists compromise between the desire for accuracy and the amount of information to be needed. For visualization of terrain, an efficient way to achieve the compromise is to display an approximation at high accuracy in specific areas of interest, while a coarse approximation is used over the other areas. And, for analytical purpose, it is efficient to employ a proper approximation of terrain with maximum precision for given tasks. Multiresolution terrain models offer the possibility to visualize and analyze terrain in 3D at different levels of precision. In this paper, we focus on a multiresolution representation of triangulated terrain, called HiT model, which can efficiently support rendering operations at interactive rate as well as analytical operations. HiT model is a new type of unified model for multiresolution description of triangulated terrain. In this paper, we'll describe HiT model in a formally way. We also presents algorithms for extraction of constant approximation and view-dependent approximation.

    Original languageEnglish
    Pages (from-to)129-138
    Number of pages10
    JournalProceedings of SPIE - The International Society for Optical Engineering
    Volume3643
    Publication statusPublished - 1999
    EventProceedings of the 1999 Visual Data Exploration and Analysis VI - San Jose, CA, USA
    Duration: 1999 Jan 271999 Jan 28

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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