Map Generating Apparatus Roundabout Pattern Recognition
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Solution Overview
Problem
Existing map generating apparatuses fail to effectively improve visibility of roundabouts on road maps, often confusing them with peripheral roads, and struggle to display roundabouts and peripheral maps simultaneously without deforming the road shape.
Innovation Solution
A map generating apparatus that extracts and replaces patterned ground objects like roundabouts with predefined patterns, allowing for easy recognition and display on a single screen without contradicting the peripheral map, using techniques such as pattern judgment and insertion methods to optimize road shape representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the road shape is deformed to improve visibility of peripheral map, then the peripheral map visibility is improved, but the visibility of roundabout features is lost
Solution Approach 1:
The patent creates a simplified copy or symbol representation of the roundabout feature that captures its essential characteristics without requiring the actual complex road geometry. This symbolic copy is then displayed in place of the detailed roundabout shape, allowing both the roundabout identification and peripheral map to be visible simultaneously.
Solution Approach 2:
The patent extracts the key identifying features of the roundabout (such as its circular pattern and connection points) from the complete road network data. By separating these essential characteristics from the full geometric detail, the system can display a simplified representation that maintains feature recognition while freeing up display space for the peripheral map.
2Loss of information
If the actual roundabout shape is displayed, then the roundabout pattern is visible, but the peripheral map cannot be displayed wider
Solution Approach 1:
The patent applies different levels of detail to different parts of the map display. The roundabout feature is represented with a simplified local pattern that captures its essence, while the surrounding peripheral area is displayed with greater detail and wider coverage. This local differentiation allows optimal use of display space for both feature recognition and contextual information.
3Ease of operation
If the road is shaped into a straight line for summary display, then visibility is improved, but roundabout points cannot be distinguished
Solution Approach 1:
The patent uses distinctive visual patterns, colors, or symbols to mark roundabout features that differ from the simplified straight-line road representation. This visual differentiation allows the road network to be displayed in a simplified, readable format while still enabling easy identification of roundabout locations through their unique visual characteristics.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
According to the present invention, when displaying a map for navigation, there is a case that a road shape becomes complicated because of shortage of road data resolution and information on a patterned ground object may not be understood correctly. A patterned ground object, or a patterned feature is extracted from stored map data and a pattern stored in advance is inserted into the map data to replace the patterned ground object. Moreover, the map into which the pattern has been inserted is displayed on a single screen (115).