Parking Assistance Camera Selection for Reduced Processing Load
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Solution Overview
Problem
The processing load of parking assistance devices increases when multiple image-capturing units are used, potentially compromising vehicle safety.
Innovation Solution
A parking assistance device that selectively uses image-capturing units based on the vehicle's travel route, determining the need for obstacle detection by calculating attitude angle changes and threshold values, and prioritizing specific camera views for turning actions to reduce processing load while maintaining safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple image-capturing units are used for obstacle detection, then detection coverage and safety are improved, but processing load increases
Solution Approach 1:
The patent divides the detection task by segmenting the plurality of image-capturing units into different functional groups based on the vehicle's travel route. The selection unit selectively activates only the necessary cameras for the current maneuver (e.g., front and left cameras for left turns), rather than processing images from all cameras simultaneously. This segmentation reduces the number of images requiring processing while maintaining comprehensive safety coverage for the specific driving scenario.
2Measurement precision
If all image-capturing units process images simultaneously, then detection accuracy is improved, but processing time increases
Solution Approach 1:
The patent applies partial action by selectively processing images only from the image-capturing units relevant to the current travel route and turning action. Instead of processing all captured images simultaneously, the system processes a subset of images that are sufficient for the specific maneuver (e.g., processing only front and side camera images during a turn, rather than all 360-degree cameras). This reduces processing time while maintaining detection accuracy for the critical areas.
Data Source
AI summary
A parking assistance ECU is a device that assists parking of a subject vehicle and includes a route generation unit that generates a travel route on which the subject vehicle travels, a selection unit that selects, based on the travel route, a camera used for detection of an obstacle among a front camera, a right side camera, a left side camera, and a rear camera which capture an image of a surrounding of the subject vehicle, in a case where a turning action of the subject vehicle is included in the travel route, and an obstacle detection unit that detects an obstacle which possibly contacts with the subject vehicle from a captured image captured by the camera selected by the selection unit.