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  1. No Access

    Article

    Detection of Seismic Precursors in Converted Ultrasonic Waves to Shear Failure of Natural Sandstone Rock Joints

    Geophysical wave measurements have been used as a remote and non-destructive method to monitor the changes in the state of contact, stress, and deformation in rock joints. In recent studies, geophysical precur...

    Amin Gheibi, Hua Li, Ahmadreza Hedayat in Rock Mechanics and Rock Engineering (2021)

  2. No Access

    Article

    Path Refinement in Weighted Regions

    In this paper, we study the weighted region problem (WRP) which is to compute a shortest path in a weighted partitioning of a plane. Recent results show that WRP is not solvable in any algebraic computation mo...

    Amin Gheibi, Anil Maheshwari, Jörg-Rüdiger Sack, Christian Scheffer in Algorithmica (2018)

  3. Chapter and Conference Paper

    Minimizing Walking Length in Map Matching

    In this paper, we propose a geometric algorithm for a map matching problem. More specifically, we are given a planar graph, H, with a straight-line embedding in a plane, a directed polygonal curve, T, and a dista...

    Amin Gheibi, Anil Maheshwari, Jörg-Rüdiger Sack in Topics in Theoretical Computer Science (2016)

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  4. No Access

    Article

    Geometric algorithm for dominant point extraction from shape contour

    In this paper we propose a new algorithm for extracting dominant points from the real contour of a digital shape. A polygonal approximation of the shape can be obtained by the set of dominant points. In the pr...

    Maedeh S. Tahaei, Seyed Naser Hashemi, Ali Mohades… in Pattern Analysis and Applications (2014)