The Experts below are selected from a list of 798 Experts worldwide ranked by ideXlab platform

Max J Egenhofer - One of the best experts on this subject based on the ideXlab platform.

  • The 9 +-Intersection for Topological Relations between a Directed Line Segment and a Region
    2008
    Co-Authors: Yohei Kurata, Max J Egenhofer
    Abstract:

    Abstract. This paper develops a formal model of topological relations between a Directed Line Segment (DLine) and a region in a two-dimensional space. Such model forms a foundation for characterizing movement patterns of an agent with respect to a region. The DLine-region relations are captured by the 9intersection for Line-region relations with further distinction of the Line’s boundary into two subparts (starting and ending points). This 9 +-intersection distinguishes 26 topological DLine-region relations. The relations ’ conceptual neighborhood graph takes the shape of a V-shaped tube, whose upper and lower halves are isomorphic to the conceptual neighborhood graph of 19 topological Line-region relations. The conceptual neighborhood graph of the 26 DLineregion relations is applied to the iconic representation of movement patterns that satisfy a qualitative condition. By manipulating such iconic representations, the movement patterns that satisfy complex conditions are easily deduced. 1

  • the 9 intersection for topological relations between a Directed Line Segment and a region
    BMI, 2007
    Co-Authors: Yohei Kurata, Max J Egenhofer
    Abstract:

    This paper develops a formal model of topological relations between a Directed Line Segment (DLine) and a region in a two-dimensional space. Such model forms a foundation for characterizing movement patterns of an agent with respect to a region. The DLine-region relations are captured by the 9intersection for Line-region relations with further distinction of the Line’s boundary into two subparts (starting and ending points). This 9-intersection distinguishes 26 topological DLine-region relations. The relations’ conceptual neighborhood graph takes the shape of a V-shaped tube, whose upper and lower halves are isomorphic to the conceptual neighborhood graph of 19 topological Line-region relations. The conceptual neighborhood graph of the 26 DLineregion relations is applied to the iconic representation of movement patterns that satisfy a qualitative condition. By manipulating such iconic representations, the movement patterns that satisfy complex conditions are easily deduced.

Yan Qiu Chen - One of the best experts on this subject based on the ideXlab platform.

  • Orientation of a fruit fly.
    2015
    Co-Authors: Xi En Cheng, Shuo Hong Wang, Zhi-ming Qian, Yan Qiu Chen
    Abstract:

    (a) The front image of an adult fruit fly. (b) The fruit fly locates at (x, y, z). Its orientation is defined by two angles (θ, ϕ) against the coordinate system. θ is an angle from x-axis and ϕ is an angle from horizontal (the x-y plane). Concatenating the location (x, y, z) and orientation (θ, ϕ), it defines a Directed Line-Segment in 3D space, the center-axis of the target.

  • The fruit fly’s model.
    2015
    Co-Authors: Xi En Cheng, Shuo Hong Wang, Zhi-ming Qian, Nan Jiang, Aike Guo, Yan Qiu Chen
    Abstract:

    (a) The front image of an adult fruit fly. (b) The articulated model of the fruit fly. (c) A fruit fly locates at (x, y, z). Its orientation is defined by two angles (θ, ϕ) against the world’s coordinate system. θ is an angle from x-axis and ϕ is an angle from horizontal (the x-y plane). Combining the location (x, y, z) and orientation (θ, ϕ), it defines a Directed Line-Segment in 3D space, the center-axis of the fruit fly.

Yohei Kurata - One of the best experts on this subject based on the ideXlab platform.

  • The 9 +-Intersection for Topological Relations between a Directed Line Segment and a Region
    2008
    Co-Authors: Yohei Kurata, Max J Egenhofer
    Abstract:

    Abstract. This paper develops a formal model of topological relations between a Directed Line Segment (DLine) and a region in a two-dimensional space. Such model forms a foundation for characterizing movement patterns of an agent with respect to a region. The DLine-region relations are captured by the 9intersection for Line-region relations with further distinction of the Line’s boundary into two subparts (starting and ending points). This 9 +-intersection distinguishes 26 topological DLine-region relations. The relations ’ conceptual neighborhood graph takes the shape of a V-shaped tube, whose upper and lower halves are isomorphic to the conceptual neighborhood graph of 19 topological Line-region relations. The conceptual neighborhood graph of the 26 DLineregion relations is applied to the iconic representation of movement patterns that satisfy a qualitative condition. By manipulating such iconic representations, the movement patterns that satisfy complex conditions are easily deduced. 1

  • the 9 intersection for topological relations between a Directed Line Segment and a region
    BMI, 2007
    Co-Authors: Yohei Kurata, Max J Egenhofer
    Abstract:

    This paper develops a formal model of topological relations between a Directed Line Segment (DLine) and a region in a two-dimensional space. Such model forms a foundation for characterizing movement patterns of an agent with respect to a region. The DLine-region relations are captured by the 9intersection for Line-region relations with further distinction of the Line’s boundary into two subparts (starting and ending points). This 9-intersection distinguishes 26 topological DLine-region relations. The relations’ conceptual neighborhood graph takes the shape of a V-shaped tube, whose upper and lower halves are isomorphic to the conceptual neighborhood graph of 19 topological Line-region relations. The conceptual neighborhood graph of the 26 DLineregion relations is applied to the iconic representation of movement patterns that satisfy a qualitative condition. By manipulating such iconic representations, the movement patterns that satisfy complex conditions are easily deduced.

Xi En Cheng - One of the best experts on this subject based on the ideXlab platform.

  • Orientation of a fruit fly.
    2015
    Co-Authors: Xi En Cheng, Shuo Hong Wang, Zhi-ming Qian, Yan Qiu Chen
    Abstract:

    (a) The front image of an adult fruit fly. (b) The fruit fly locates at (x, y, z). Its orientation is defined by two angles (θ, ϕ) against the coordinate system. θ is an angle from x-axis and ϕ is an angle from horizontal (the x-y plane). Concatenating the location (x, y, z) and orientation (θ, ϕ), it defines a Directed Line-Segment in 3D space, the center-axis of the target.

  • The fruit fly’s model.
    2015
    Co-Authors: Xi En Cheng, Shuo Hong Wang, Zhi-ming Qian, Nan Jiang, Aike Guo, Yan Qiu Chen
    Abstract:

    (a) The front image of an adult fruit fly. (b) The articulated model of the fruit fly. (c) A fruit fly locates at (x, y, z). Its orientation is defined by two angles (θ, ϕ) against the world’s coordinate system. θ is an angle from x-axis and ϕ is an angle from horizontal (the x-y plane). Combining the location (x, y, z) and orientation (θ, ϕ), it defines a Directed Line-Segment in 3D space, the center-axis of the fruit fly.

Zhi-ming Qian - One of the best experts on this subject based on the ideXlab platform.

  • Orientation of a fruit fly.
    2015
    Co-Authors: Xi En Cheng, Shuo Hong Wang, Zhi-ming Qian, Yan Qiu Chen
    Abstract:

    (a) The front image of an adult fruit fly. (b) The fruit fly locates at (x, y, z). Its orientation is defined by two angles (θ, ϕ) against the coordinate system. θ is an angle from x-axis and ϕ is an angle from horizontal (the x-y plane). Concatenating the location (x, y, z) and orientation (θ, ϕ), it defines a Directed Line-Segment in 3D space, the center-axis of the target.

  • The fruit fly’s model.
    2015
    Co-Authors: Xi En Cheng, Shuo Hong Wang, Zhi-ming Qian, Nan Jiang, Aike Guo, Yan Qiu Chen
    Abstract:

    (a) The front image of an adult fruit fly. (b) The articulated model of the fruit fly. (c) A fruit fly locates at (x, y, z). Its orientation is defined by two angles (θ, ϕ) against the world’s coordinate system. θ is an angle from x-axis and ϕ is an angle from horizontal (the x-y plane). Combining the location (x, y, z) and orientation (θ, ϕ), it defines a Directed Line-Segment in 3D space, the center-axis of the fruit fly.