Indoor Map POI Color Coding for Readability
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Solution Overview
Problem
Digital electronic maps on mobile devices become cluttered with multiple points of interest (POIs), making it difficult for users to discern specific POIs of interest from others, especially when using a single color for all POIs, which reduces readability and effectiveness in navigation.
Innovation Solution
A method where a mobile device receives a digital map and maps alphanumeric identifiers of POIs to distinct colors based on their type, location, user preferences, and ambient conditions, using color spaces like RGB, HSV, and LAB to ensure visually distinguishable colors, even for users with colorblindness, and dynamically adjusts colors for better visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple POIs are displayed on a digital map using a single color, then all POIs can be shown on the map, but the readability and ability to distinguish specific POIs is reduced
Solution Approach 1:
The patent applies local quality by assigning different colors to different POIs based on their categories (e.g., red for restaurants, blue for cafes, green for parks). This allows each POI to have a specific visual property (color) that corresponds to its type, enabling users to quickly distinguish and identify specific POIs of interest while maintaining the ability to display multiple POIs on the same map without clutter
Solution Approach 2:
The patent utilizes color changes as the core mechanism to differentiate POIs. By mapping category identifiers to specific colors and applying these colors to corresponding POI markers on the map, the system transforms a monochromatic display into a multi-color visualization that significantly improves readability and user ability to discern specific POIs from others
2Ease of operation
If color-coded POI differentiation is implemented, then POI distinguishability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal color mapping system where a single mapping mechanism handles all POI categories. The system uses a general-purpose mapping function that takes a category identifier (such as a POI type code) and returns the corresponding color, rather than requiring separate handling for each POI type. This multi-functional approach reduces device complexity while maintaining excellent POI distinguishability
Solution Approach 2:
The patent changes the parameter of POI visualization from a single monochromatic attribute to a multi-parameter system where each POI is characterized by its category identifier and corresponding color parameters. This parameter transformation enables systematic differentiation of POIs through color while maintaining a relatively simple implementation through consistent mapping rules across all POI types
Data Source
AI summary
Methods, apparatuses, and devices for rendering indoor maps on a display device of, for example, a mobile device, are presented. In one example, a processor of a mobile device may receive identifiers, such as alphanumeric identifiers, for points of interest (POI) and map at least portions of the identifiers to colors within a suitable color space, such as a RGB color space.