Reference Object Mapping for Cross-Vendor Position Transfer
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Solution Overview
Problem
In intelligent transportation systems, position information expressed by maps from different vendors is not universal due to varying cartographic rules and map element numbering methods, leading to inconsistencies and difficulties in position reference and data transfer between devices.
Innovation Solution
A method and apparatus for generating and using map information that includes a set of reference objects with universal identifiers and positions, allowing devices to use these reference objects for accurate position expression and data transfer, regardless of the map vendor, by selecting and optimizing reference points based on priority, precision, and confidence, and expressing positions using absolute or relative coordinates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different map vendors use different cartographic rules and map element numbering methods for position expression, then each vendor can maintain their own mapping standards and data organization, but position information becomes non-universal and cannot be transferred between devices using different maps
Solution Approach 1:
The patent introduces a universal reference object (such as a road segment or geographic feature) as an intermediary entity that both map vendors can reference. Instead of directly referencing vendor-specific map elements, position information is expressed relative to these universal reference objects, enabling cross-vendor compatibility while allowing each vendor to maintain their own data organization
Solution Approach 2:
The patent creates a universal position expression framework that can be used across different map vendors and devices. By defining reference objects with universal identifiers and coordinate systems that are independent of any specific vendor's cartographic rules, the system achieves multi-functionality where the same reference framework serves multiple vendors and devices
2Measurement precision
If relative position expression is performed based on vendor-specific reference points, then position information can be expressed within a single vendor's map system, but deflection errors occur when transferring position information between devices using different maps
Solution Approach 1:
The patent transforms the parameter system for position expression by changing from vendor-specific coordinate systems to a universal reference system. By defining positions relative to universal reference objects with standardized coordinate systems, the patent eliminates deflection errors that occur when transforming between different vendor-specific coordinate systems, thereby preserving position accuracy across devices
3Adaptability or versatility
If a universal reference object system is implemented across different map vendors, then position information can be transferred universally between devices, but additional complexity is introduced in selecting and managing reference objects
Solution Approach 1:
The patent applies local quality by allowing different levels of reference object detail and precision in different geographic areas or application scenarios. Reference objects can be selected with appropriate levels of specificity based on local requirements, balancing universality with practical usability and reducing unnecessary complexity
Data Source
AI summary
Generating first map information, where the first map information includes information about a first reference object set, and the information about the first reference object set indicates a first identifier, in a geographic area, of each reference object in at least one reference object included in the first reference object set, and indicates a first position of each reference object in the at least one reference object. The first map information is generated, and the first map information indicates related information of each reference object in the first reference object set, to implement a manner of expressing the related information of the reference object more abundantly, so that maps provided by different map vendors may use reference objects in the first map information to perform position expression on an element or an event.