3D Direction Display for Navigation Path Recognition
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Solution Overview
Problem
Conventional 2D path display maps fail to clearly indicate turns, especially when paths are occluded by buildings, as symbols become too small at a distance and are difficult to recognize.
Innovation Solution
A method and apparatus for generating a 3D direction display that uses a path line algorithm to create a 3D map, setting a direction display starting point based on angle differences, and generating additional interpolation points to maintain display visibility, allowing for color and animation effects to indicate turn angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a 2D image symbol is used to indicate turn area in conventional path display map, then the path display can be simplified, but the symbol becomes too small to recognize when viewed from a distance
Solution Approach 1:
The patent transitions from 2D image symbols to 3D directional indicators that extend vertically from the road surface. This dimensional change allows the indicator to maintain visible size at distances of 50-100 meters while still conveying turn direction information, effectively resolving the contradiction between display simplicity and recognizability at a distance
2Shape
If a 3D map is used to display path information, then the characteristic appearance of buildings can be displayed, but roads on left or right sides may be occluded by buildings making turns difficult to recognize
Solution Approach 1:
The patent extracts turn direction information from the complex 3D map environment and presents it through dedicated 3D directional indicators placed along the road. These indicators independently convey turn direction without being blocked by buildings, separating the navigation function from the visual map display function
Solution Approach 2:
The 3D directional indicators act as intermediary elements between the driver and the path information. Rather than relying on the driver to interpret occluded road segments in the 3D map, the indicators provide direct, unobstructed visual guidance for turns at appropriate distances
3Shape
If the path is displayed using conventional 2D symbols on a 3D map, then the map can maintain three-dimensional appearance, but the turn indication becomes less effective when viewed from long distances
Solution Approach 1:
The patent applies different visual qualities to different elements: the 3D map maintains its three-dimensional appearance for contextual information, while the turn indicators use enhanced local quality through vertical extension and strategic positioning to ensure recognizability at 50-100 meters. This localized enhancement resolves the contradiction between maintaining 3D map appearance and ensuring turn indication effectiveness
Data Source
AI summary
An apparatus and method for generating a three-dimensional (3D) path are provided. The apparatus includes: a polygon generation unit to generate a left polygon and a right polygon on the left and the right of path data, respectively, based on a linear interpolation point of the path data; and a polygon conversion unit to apply a height value to the linear interpolation point based on the left polygon and the right polygon and to thereby generate the 3D path.