SYSTEMS AND METHODS FOR EVALUATING CHANGES IN TERRAIN TOPOGRAPHY OVER TIME

Systems and methods for evaluating changes in terrain topography over time are provided. A first point cloud corresponds to the terrain topography during a first time period. A second point cloud corresponds to the terrain topography during a second time period. One or more processors collectively e...

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Bibliographic Details
Main Authors LATO, MATTHEW, FERRIER, ALEX
Format Patent
LanguageEnglish
French
Published 09.01.2023
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Summary:Systems and methods for evaluating changes in terrain topography over time are provided. A first point cloud corresponds to the terrain topography during a first time period. A second point cloud corresponds to the terrain topography during a second time period. One or more processors collectively execute instructions to: for each point in the first point cloud, determine a point plane; align the first and second point clouds based on a plurality of plane offset distances; for each point in the aligned second point cloud, calculate a normal direction; for each point in the aligned second point cloud, identify one or more corresponding points in the aligned first point cloud; and generate a third point cloud representing topographical differences. The first point cloud can be divided into a plurality of grid cells and a plurality of graphics processing cores can execute parallel point processing based on the plurality of grid cells.
Bibliography:Application Number: CA20223155263