3D Parking Assist Using Odometry for Overhead Clearance
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Solution Overview
Problem
Existing parking assist systems lack the capability to provide a comprehensive three-dimensional view of a vehicle's surroundings, particularly above and around the vehicle, which is crucial for precise parking maneuvers, as they typically rely on sensors that do not include upward-facing components.
Innovation Solution
A system utilizing a combination of forward and rearward-facing cameras and sensors, along with odometry, to determine a three-dimensional envelope around the vehicle, including the top, lateral, and longitudinal sides, and displaying distance measurements to the closest objects on a heads-up display or central vehicle display, with color coding for different distance ranges and providing audio or haptic alerts for potential interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If forward and rearward-facing cameras and sensors are used without upward-facing sensors, then the system structure is simpler and cost is reduced, but the measurement precision of the three-dimensional volume above the vehicle deteriorates
Solution Approach 1:
The patent applies odometry to transform two-dimensional sensor data from forward and rearward-facing cameras into three-dimensional spatial information. By combining 2D image data with vehicle motion data (odometry), the system reconstructs 3D positions of objects above the vehicle, effectively using another dimension (temporal motion data) to compensate for the missing upward-facing sensor dimension.
2Measurement precision
If upward-facing sensors are installed to directly measure the volume above the vehicle, then the measurement precision improves, but the device complexity and cost increase
Solution Approach 1:
The patent introduces odometry data as an intermediary element that mediates between the available 2D sensor data and the desired 3D measurement. The odometry information about vehicle motion serves as a bridge, allowing the system to infer three-dimensional positions from two-dimensional camera images without requiring direct 3D sensing capability.
3Manufacturing precision
If comprehensive three-dimensional sensing is implemented, then the parking accuracy improves, but the system complexity and computational requirements increase
Solution Approach 1:
The patent segments the sensing task into two parts: 2D object detection using forward and rearward-facing cameras, and 3D position reconstruction using odometry data. This segmentation allows each component to be optimized independently - the cameras focus on reliable 2D detection while the odometry system handles the 3D spatial transformation, reducing overall system complexity compared to using a single comprehensive 3D sensing system.
Data Source
AI summary
Systems and methods for providing a three-dimensional (3-D) parking assist feature include receiving sensor data from a plurality of different sensors with respect to a 3-D volume surrounding a top side of a vehicle, lateral sides of the vehicle, and at least one longitudinal end side of the vehicle, determining a 3-D envelope around the vehicle defined by a closest object relative to each of the top side, the lateral sides, and the at least one longitudinal end side of the vehicle, and outputting a distance measurement of the 3-D envelope relative to each of the top side, the lateral sides, and the at least one longitudinal end side of the vehicle on one or more vehicle display, wherein a negative distance is indicative of an overshoot or interference condition.