Velocity-Synchronized Vehicle Imaging for High-Speed Capture
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Solution Overview
Problem
Existing imaging systems struggle to capture clear images of vehicles moving at high velocities without framing out the objects, leading to difficulties in accurately identifying vehicle models and drivers, especially at night or in conditions with low ambient light, and can result in obscured license plates due to inter-vehicular distances.
Innovation Solution
An imaging system utilizing a sensor to measure object velocity and a separate camera, controlled by a processing circuit, generates control data for the camera to image objects at appropriate timings based on velocity, position, and measurement timing information, enabling clear imaging of both slow and fast-moving objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a fixed imaging interval is used, then imaging is simple to implement, but fast-moving objects are framed out and cannot be captured completely
Solution Approach 1:
The system performs preliminary velocity measurement using a sensor before imaging, and uses this measured velocity information to calculate and determine the optimal imaging timing in advance, ensuring the object is fully captured within the imaging frame
Solution Approach 2:
The imaging interval is dynamically adjusted based on the measured velocity of the object. When velocity increases, the imaging interval decreases, and vice versa, allowing the system to adapt to different motion speeds and prevent framing out of fast-moving objects
2Measurement precision
If multiple vehicle detectors are installed to meet multiple determination criteria, then vehicle recognition accuracy improves, but device complexity increases
Solution Approach 1:
The imaging system is designed to serve multiple functions: it captures images for vehicle classification, records license plate information, and provides visual documentation for toll calculation. This single multi-functional system replaces what would otherwise require multiple specialized detectors
Solution Approach 2:
The patent combines velocity measurement, position detection, and image capture into an integrated system. The imaging device simultaneously performs multiple detection tasks that would traditionally require separate detectors, reducing overall system complexity while maintaining recognition accuracy
Data Source
AI summary
An imaging system includes a sensor that measures a velocity of a moving object, a camera that is different from the sensor and images the object, and a processing circuit that controls the operations of the sensor and the camera, wherein the processing circuit causes the sensor to generate velocity information on the object and measurement timing information on the velocity by causing the sensor to measure the velocity of the object, generates control data, including imaging timing information on the camera, in accordance with (a) position information on the object or distance information on the object at a time of velocity measurement, (b) the velocity information, and (c) the measurement timing information, and causes the camera to output, in response to the control data, image data including image information on the object.