Laser Radar Vehicle Behavior Detection Using Point Cloud Tracking
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Solution Overview
Problem
Existing vehicle monitoring devices face challenges in accurately detecting vehicle behavior due to image processing susceptibility to environmental disturbances and false detection issues when displacement is small.
Innovation Solution
A detection device utilizing a laser radar to generate point cloud information, which is less affected by light intensity and weather conditions, and detects vehicle behavior by tracking movement from a first area to a second area within a preset detection zone, improving accuracy regardless of vehicle speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image processing is used to detect vehicle behavior, then the detection device can identify vehicle movements, but the position information accuracy deteriorates due to environmental disturbances
Solution Approach 1:
The patent replaces optical image processing with laser radar technology. The laser radar emits laser beams and detects reflected light to generate point cloud information, which is then used to calculate precise three-dimensional coordinates of vehicles. This substitution of the detection mechanism eliminates the susceptibility to environmental lighting conditions and weather disturbances that affect camera-based image processing, thereby improving position information accuracy.
Solution Approach 2:
The patent changes the detection parameter from two-dimensional image coordinates to three-dimensional point cloud data. By using laser radar to capture spatial information in three dimensions (x, y, z coordinates), the system achieves more precise position measurement that is not affected by environmental factors such as light intensity, weather conditions, or time of day, thus resolving the accuracy deterioration problem.
2Reliability
If feature point displacement is used to determine travel direction, then the detection device can identify vehicle behavior, but false detection occurs when displacement is small
Solution Approach 1:
The patent replaces the feature point displacement method with laser radar-based three-dimensional coordinate tracking. Instead of measuring subtle changes in feature point positions that are prone to error, the system calculates the distance between the laser radar and the vehicle in three-dimensional space. This approach provides more reliable and precise measurement of vehicle movement, eliminating false detection issues that occur with small displacements in image-based systems.
Solution Approach 2:
The patent transitions from two-dimensional image coordinate measurement to three-dimensional spatial coordinate measurement. By using laser radar to obtain point cloud information with x, y, and z coordinates, the system can accurately measure vehicle displacement in three-dimensional space. This dimensional enhancement provides greater measurement precision and reliability, especially for small movements that are difficult to detect in two-dimensional images.
3Adaptability or versatility
If camera-based image capture is used, then the detection device can monitor vehicle behavior, but the system becomes sensitive to light intensity and weather conditions
Solution Approach 1:
The patent replaces the optical camera system with a laser radar system. The laser radar emits active laser beams and detects reflected light to generate point cloud information. This active sensing mechanism is independent of ambient light conditions, allowing the system to operate reliably in various environmental conditions including night, rain, fog, and other weather conditions where camera-based systems fail or produce inaccurate results. This substitution significantly improves both environmental adaptability and detection stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the accuracy of vehicle behavior detection by using point cloud information from laser radar, reducing false positives and improving reliability in various environmental conditions.
Implementation Method 1
a laser radar that irradiates the detection area with laser light and receives reflected light of the laser light to generate point cloud information
Implementation Method 2
receives reflected light of the laser light to generate point cloud information
Data Source
AI summary
A detection device, which detects a behavior of a vehicle in a preset detection area using a laser radar that generates point cloud information by irradiating the detection area with laser light and receiving reflected light resulting from the irradiation with the laser light, includes an acquisition unit configured to acquire the point cloud information, a vehicle detection unit configured to detect a vehicle on the basis of the point cloud information, and a behavior detection unit configured to detect a target behavior that is a vehicle behavior subjected to detection in response to the vehicle detected by the vehicle detection unit having moved from a first area to a second area, in which the first area and the second area are included in the detection area and are set according to the target behavior.