Three-dimensional information processing device

Abstract

The present invention is equipped with: a basal plane intersection point calculation unit (8) that calculates intersection points between the line segments forming a set of apexes in a terrain model generated by a terrain apex combination unit (7) and the outer perimeter line segments of the basal plane of a building model extracted by a building basal plane extraction unit (3); an all-points height calculation unit (9) that calculates the height of the terrain model at each intersection point calculated by the basal plane intersection point calculation unit (8) and each apex forming the basal plane of the building model; a reference height calculation unit (10) that calculates a reference height for the three-dimensional information of a prescribed region, from the height of the terrain model as calculated by the all-points height calculation unit (9); and a building height correction unit (11) that uses the difference between the reference height, calculated by the reference height calculation unit (10), and the height of the terrain model at the apexes forming the basal plane of the building model, as calculated by the all-points height calculation unit (9), to correct the height of the building model.

Description

technical field [0001] The present invention relates to a three-dimensional information processing device for adjusting display information in the height direction of a three-dimensional model of a building or the like. Background technique [0002] For example, a device having a map display function such as a car navigator has a three-dimensional map top view display function of arranging building models such as commercial facilities on a three-dimensional topography model with undulations, and viewing the topography model and building models from a top view. The data used to realize the top view display function of the 3D map is usually 3D information provided by the map data production company, that is, terrain models and / or building models, and these 3D information are generated based on data measured on the spot. However, there are errors in the position measurement of the three-dimensional information of terrain and / or buildings, so when displaying a three-dimensional ...

AI Technical Summary

Problems solved by technology

However, there are errors in the position measurement of the three-dimensional information of the terrain and / or buildings, so when displaying a three-dimensional map based on the three-dimensional information, there may be cases where the building model floats relative to the terrain model or the building model floats relative to the terrain. model sinking problem

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