Infrastructure Radar Coordinate Mapping via Camera Overlay
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Solution Overview
Problem
Radars used for traffic monitoring face challenges in accurately setting the relationship between the coordinate space and the position of roads due to varying configurations such as lane numbers and shapes, making it difficult to detect vehicles accurately.
Innovation Solution
A display device and computer program that include a setting screen for inputting lane shape lines and mark points, which are superimposed on camera images to define the relationship between the coordinate space and road positions, allowing for accurate setting and adjustment of lane areas in the radar system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the radar uses fixed coordinate space settings, then the device complexity is reduced, but the measurement precision of vehicle detection deteriorates due to varying lane configurations
Solution Approach 1:
The patent uses camera images as visual copies of the road scene and overlays lane shape lines and mark points on these images. This allows operators to visually define the relationship between the radar's coordinate space and the actual road layout by manipulating graphical representations, thereby achieving precise vehicle detection without complex manual coordinate configuration.
Solution Approach 2:
The patent introduces an intermediary interface combining camera images, lane shape lines, and mark points to bridge the radar's coordinate system with the physical road environment. This intermediary visual representation system enables precise mapping between radar coordinates and road positions without requiring direct complex coordinate transformations.
2Measurement precision
If the radar settings are manually configured without visual reference, then the ease of operation is improved, but the measurement precision of lane position mapping deteriorates
Solution Approach 1:
The patent creates a visual copy of the road scene using camera images and overlays graphical lane shape lines and mark points on these images. Operators can easily define lane positions by interacting with these visual representations, which directly correspond to the physical road features, thereby achieving accurate lane position mapping with simple operations.
Solution Approach 2:
The patent transitions from abstract coordinate space to a visual two-dimensional image plane. By representing lane positions as graphical elements on camera images, the system makes the abstract coordinate mapping concrete and visually intuitive, allowing operators to easily and accurately define lane positions through graphical interaction.
3Adaptability or versatility
If the system does not account for varying lane shapes and configurations, then the device complexity is reduced, but the adaptability to different road conditions deteriorates
Solution Approach 1:
The patent implements a dynamic setting system where lane shape lines and mark points can be freely adjusted and reconfigured to match different road conditions. The system adapts to varying lane configurations by allowing operators to modify the graphical representations on camera images, enabling the radar to accurately model diverse road geometries without requiring complex built-in adaptability mechanisms.
Solution Approach 2:
The patent performs preliminary visual definition of lane shapes and positions using camera images and graphical overlays before actual vehicle detection occurs. By pre-configuring the coordinate space mapping based on visual inspection and manual adjustment of lane shape lines and mark points, the system prepares the radar's coordinate system to accurately reflect the specific road conditions, enabling high adaptability without complex real-time adjustments.
Data Source
AI summary
Provided is a display device including: a display configured to display a setting screen for setting a radio wave radar for infrastructure; and an input unit configured to receive an input of a lane shape line indicating a shape of a lane in a target area, and an input of a mark point indicating a specific position in the target area. The setting screen includes: an image display section configured to display the lane shape line and the mark point so that the lane shape line and the mark point are superimposed on an image obtained by a camera that images the target area; and a coordinate value display section configured to display coordinate values corresponding to the mark point. The coordinate values are coordinate values in a coordinate space of the radio wave radar for infrastructure.