Position Mapping to Graphical Representations Without Georeferencing
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Solution Overview
Problem
In surveillance and monitoring applications, there is a need to map position detections from positioning devices like radar and LIDAR to graphical representations of scenes without relying on georeferenced maps, as these are often not available or up-to-date, and integrating GPS transceivers in fixed monitoring devices is costly and complex.
Innovation Solution
A method and system that generates a transformation function by detecting calibration positions in a scene using a positioning device, storing image coordinates, and comparing them to create a mapping that allows position detections to be accurately represented in graphical representations, such as images or drawings, without needing geographical coordinates, enabling the use of any type of image, including hand-drawn sketches, and allowing for easy updates to the scene layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS transceivers are integrated in fixed monitoring devices to provide georeferencing framework, then the ability to relate detected object positions to locations on georeferenced maps is improved, but the cost and device complexity increase
Solution Approach 1:
The patent extracts the georeferencing function from the monitoring device itself and relocates it to external GPS transceivers. The monitoring device only needs to receive position detections and map them to graphical representations without requiring built-in GPS capabilities, thereby reducing device complexity while maintaining position mapping accuracy.
Solution Approach 2:
The patent introduces graphical representations (maps, images, drawings) as an intermediary layer between the positioning device detections and the display system. This intermediary allows position mapping without requiring the monitoring device to directly process GPS coordinates or maintain georeferenced data structures.
2Measurement precision
If georeferenced maps are used as graphical representations, then the framework for relating position detections to locations is improved, but the availability and updatability of the graphical representations worsen due to resolution issues and lack of updates
Solution Approach 1:
The patent makes the system universal by accepting multiple types of graphical representations (maps, images, drawings, sketches) rather than being limited to georeferenced maps. This allows the system to adapt to different应用场景 and update graphical representations easily without requiring georeferencing data.
Solution Approach 2:
The patent changes the parameter set used for graphical representations from requiring georeferenced coordinates to using simple image coordinates. This parameter change allows any image or drawing to be used as a graphical representation, improving adaptability while maintaining position mapping capability through coordinate transformation.
3Measurement precision
If calibration positions are detected and stored with corresponding image coordinates, then the transformation function mapping accuracy is improved, but the calibration time and process complexity increase
Solution Approach 1:
The patent uses only two calibration positions (minimum required) rather than attempting to calibrate multiple positions throughout the scene. This partial action approach achieves sufficient transformation function accuracy while minimizing calibration time and process complexity.
Solution Approach 2:
The patent performs calibration setup in advance by storing the coordinates of two calibration positions and their corresponding locations in the graphical representation. This preliminary action allows the transformation function to be pre-computed and stored, eliminating the need for real-time calibration during operation.
Data Source
AI summary
A method, device and system for generating a transformation function, mapping position detections of objects in a scene, detected with a positioning device, to a graphical representation of the scene. The teachings enable the detected positions by the positioning device to be mapped to the graphical representation of the monitored scene without the need of previous references to geographical coordinate systems for the positioning device and the graphical representation of the scene. Virtually any type of image may hence be used as a graphical representation of the scene, even hand-drawn sketches.