Optical Sensor Orientation Control for Vehicle Roll Compensation
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Solution Overview
Problem
Computer vision techniques for vehicles are less effective when applied to vehicles that roll appreciably, such as motorcycles, due to the roll effect causing a loss of information during correction methods that rotate and fit optical data, leading to reduced detection accuracy.
Innovation Solution
A system that compensates for the roll effect by detecting the vehicle's roll using sensors and adjusting the orientation of the optical sensor in real-time to maintain a perpendicular view-up orientation relative to the road surface, preventing information loss and enhancing detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the captured optical data is rotated and fitted into the aspect ratio of the optical sensor to correct the roll effect, then the view-up orientation of the optical data is restored to be perpendicular with the road surface, but portions of the optical data are cropped off resulting in loss of information
Solution Approach 1:
The patent applies preliminary action by adjusting the optical sensor's orientation in real-time to counteract vehicle roll before the optical data is captured. The sensor orientation adjustment module receives sensor data indicating vehicle roll and generates an adjusted orientation for the optical sensor that compensates for the roll effect, ensuring the sensor remains perpendicular to the road surface during image capture. This prevents the need for post-capture rotation that would cause cropping and information loss.
Solution Approach 2:
The patent applies inversion by reversing the conventional approach: instead of rotating the captured image data to correct roll (which causes cropping), the system inverts the problem by pre-adjusting the sensor's physical orientation to counteract the expected roll. This is achieved by the sensor orientation adjustment module that calculates the opposite orientation needed to compensate for vehicle roll, thereby capturing data in the correct orientation from the start.
2Adaptability or versatility
If computer vision techniques are applied to optical data from vehicles that roll appreciably, then the system can be used on motorcycles and scooters, but the detection accuracy is significantly lower due to the roll effect
Solution Approach 1:
The patent applies dynamics by making the optical sensor's orientation adjustable and dynamic rather than fixed. The sensor orientation adjustment module continuously receives sensor data about vehicle roll and dynamically adjusts the sensor's orientation in real-time to maintain perpendicularity with the road surface. This dynamic adaptation enables the system to work effectively on various vehicle types including motorcycles and scooters while maintaining high detection accuracy.
Solution Approach 2:
The patent applies feedback by using sensor data about vehicle roll to continuously adjust the optical sensor's orientation. The sensor data indicating the amount of roll feeds back to the sensor orientation adjustment module, which generates an adjusted orientation to counteract the roll effect. This closed-loop feedback system ensures the sensor remains properly oriented despite vehicle rolling, maintaining detection accuracy across different vehicle types.
Data Source
AI summary
Embodiments of the present disclosure set forth techniques for compensating for a roll effect for an optical sensor. The techniques include receiving sensor data from at least one sensor associated with the vehicle, detecting an amount of a roll of the vehicle based on the sensor data, generating a command based on the detected amount of roll, and controlling an orientation of the optical sensor based on the command.