Navigation Apparatus Spatial Map Projection
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Solution Overview
Problem
Conventional navigation systems fail to provide a spatially realistic representation of digital maps, lacking the impression of depth and plasticity, especially when displaying journey or flight routes with height information.
Innovation Solution
A navigation apparatus that incorporates a processor module to transform digital geodata with height information into a visually perceptible 2D or 3D projection based on user-defined viewing directions, using color gradations and light sources to simulate depth, allowing for a spatially realistic perception of the map.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional 2D map representation is used, then the display is simple and easy to understand, but the spatial plasticity and depth perception are insufficient
Solution Approach 1:
The patent applies dimensionality change by transforming 2D map data into 3D visual representations. The processor module generates 3D coordinates from 2D geodata and associates them with height information, creating a three-dimensional projection that provides spatial plasticity while maintaining compatibility with conventional 2D data structures.
Solution Approach 2:
The patent uses color changes to enhance spatial perception. Different color codes are assigned to represent different height values and terrain features, allowing users to visually distinguish elevation changes, buildings, and other spatial characteristics without increasing geometric complexity.
2Illumination intensity
If 3D geodata is represented in 2D, then the data can be displayed on conventional screens, but the spatial realism and depth perception are lost
Solution Approach 1:
The patent recovers depth information by generating 3D coordinates from 2D geodata and associating them with height values. This creates a 3D projection that preserves spatial relationships and depth perception while still being renderable on 2D display screens.
Solution Approach 2:
The patent changes the parameter representation by associating visual perception values with different height values. This allows the display to convey depth and spatial information through parameter variations (color, brightness, position) rather than losing the information in a flat 2D representation.
3Loss of information
If color codes are assigned to different height values, then terrain relief can be visually distinguished, but the processing complexity increases
Solution Approach 1:
The patent systematically assigns color codes to different height values to make terrain relief visually distinguishable. This color-coding scheme allows users to quickly perceive elevation changes, buildings, and geographic features without requiring complex processing of raw height data.
Solution Approach 2:
The patent transforms height information into visual perception parameters (color codes, brightness levels) that can be efficiently processed and displayed. This parameter transformation simplifies the representation of complex terrain data while preserving all essential spatial information.
Data Source
AI summary
A navigation apparatus for spatially representing a digital map section around a geographical position on the earth's surface on the basis of digital geodata, wherein the digital geodata have height information, having a first input interface for the digital geodata; a second input interface for coordinates of the geographical position; a third input interface for a perspective stipulation variable corresponding to a desired viewing direction of the position; a processor module which is coupled to the first, second and third input interfaces; and an output interface coupled to the processor module and intended to output output data corresponding to the projection of the geodata which can be visually perceived in different ways and corresponds to the height information.