2023/06/07 by Eyram Schwinger, Ralph Twum, Schwinger, Eyram +6 · 1 voice
Computer Science · Engineering · #3D Modeling in Geospatial Applications #Computational Geometry and Mesh Generation #Data Management and Algorithms #cs.CG
paper · pdf · doi:10.48550/arxiv.2306.04316
In this work, we designed algorithms for the point in polygon problem based on the ray casting algorithm using equations from vector geometry. The algorithms were implemented using the python programming language. We tested the algorithm against the point in polygon algorithms used by the shapely (and by extension geopandas) library and the OpenCV library using points from the google Open Buildings project. Our algorithm in pure python performed much better than the shapely implementation. It also performed better than the OpenCV implementation when combined with the Numba optimization library. We also performed simulations to verify that our algorithm performance was of the order O(n).