On Finding Spherical Geodesic Paths and Circles in ℤ3

R. Biswas, P. Bhowmick, 8668 (2014).

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Conference Paper | Published | English
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Abstract
A discrete spherical geodesic path between two voxels s and t lying on a discrete sphere is a/the 1-connected shortest path from s to t, comprising voxels of the discrete sphere intersected by the real plane passing through s, t, and the center of the sphere. We show that the set of sphere voxels intersected by the aforesaid real plane always contains a 1-connected cycle passing through s and t, and each voxel in this set lies within an isothetic distance of 32 from the concerned plane. Hence, to compute the path, the algorithm starts from s, and iteratively computes each voxel p of the path from the predecessor of p. A novel number-theoretic property and the 48-symmetry of discrete sphere are used for searching the 1-connected voxels comprising the path. The algorithm is output-sensitive, having its time and space complexities both linear in the length of the path. It can be extended for constructing 1-connected discrete 3D circles of arbitrary orientations, specified by a few appropriate input parameters. Experimental results and related analysis demonstrate its efficiency and versatility.
Publishing Year
Date Published
2014-01-01
Volume
8668
Page
396-409
Conference
DGCI: International Conference on Discrete Geometry for Computer Imagery
Conference Location
Siena, Italy
Conference Date
2014-09-10 – 2014-09-12
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Biswas R, Bhowmick P. On Finding Spherical Geodesic Paths and Circles in ℤ3. 2014;8668. doi:10.1007/978-3-319-09955-2_33
Biswas, R., & Bhowmick, P. (2014). On Finding Spherical Geodesic Paths and Circles in ℤ3. Presented at the DGCI: International Conference on Discrete Geometry for Computer Imagery, Berlin, Heidelberg: Springer. https://doi.org/10.1007/978-3-319-09955-2_33
Biswas, Ranita, and Partha Bhowmick. “On Finding Spherical Geodesic Paths and Circles in ℤ3.” Lecture Notes in Computer Science. Berlin, Heidelberg: Springer, 2014. https://doi.org/10.1007/978-3-319-09955-2_33.
R. Biswas and P. Bhowmick, “On Finding Spherical Geodesic Paths and Circles in ℤ3,” vol. 8668. Springer, Berlin, Heidelberg, 2014.
Biswas R, Bhowmick P. 2014. On Finding Spherical Geodesic Paths and Circles in ℤ3. 8668.
Biswas, Ranita, and Partha Bhowmick. On Finding Spherical Geodesic Paths and Circles in ℤ3. Vol. 8668, Springer, 2014, doi:10.1007/978-3-319-09955-2_33.

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