Vehicle Detecting Device Region-Based Frequency Control
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Solution Overview
Problem
Existing vehicle detecting systems for adaptive driving beam (ADB) control face a trade-off between configuration complexity and accuracy, with simpler configurations leading to decreased accuracy in detecting front vehicles, which can result in reduced ADB control effectiveness.
Innovation Solution
A vehicle detecting device that sets multiple regions of interest with different ranges on image data from an image capturing device, using a region setting unit and a vehicle determining unit to detect front vehicles based on luminous points, with varying determination frequencies and standards for each region, and a light source device that independently controls illumination based on detection results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simpler element such as a simpler CPU is installed in the vehicle detecting device to simplify the configuration, then the configuration complexity is reduced, but the accuracy in detecting a front vehicle decreases
Solution Approach 1:
The image data is divided into multiple regions of interest (center region, side regions, oncoming vehicle regions) with different determination frequencies. The vehicle determining unit performs vehicle presence determination at different frequencies for each region, reducing the overall processing load while maintaining detection accuracy in critical areas.
Solution Approach 2:
Different regions of interest are assigned different determination frequencies based on their importance. The center region (where preceding vehicles appear) uses higher determination frequency, while side regions use lower frequency, optimizing the balance between detection accuracy and processing efficiency.
2Device complexity
If vehicle detection accuracy is maintained with a simpler configuration, then the ADB control accuracy may decrease, but the configuration is simplified
Solution Approach 1:
The detection system segments the field of view into multiple regions with different processing priorities, allowing a simpler CPU to efficiently handle the detection task while maintaining sufficient accuracy for ADB control by focusing computational resources on critical regions.
Solution Approach 2:
The system changes the determination frequency parameter across different regions, using higher frequencies for critical areas (center region) and lower frequencies for less critical areas (side regions), enabling accurate ADB control with reduced processing load.
Data Source
AI summary
A vehicle detecting device includes a region setting unit that sets a plurality of regions of interest having different ranges on image data acquired from an image capturing device that captures an image of a space in front of a host vehicle; and a vehicle determining unit that determines, for each of the regions of interest, presence of a front vehicle based on a luminous point present in the region and that executes a determination at different frequencies in the respective regions of interest.