Blind Spot Object Detection Using Entry and Exit Status
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Solution Overview
Problem
Existing object detection devices cannot accurately determine the presence of obstacles in blind spots without estimating their movement position, leading to potential false identification of dangerous blind spots even after obstacles have passed out of the detection range.
Innovation Solution
An object detection device that acquires the entry/exit status of objects into/from closed blind spots using sensor detection results, allowing for determination of object presence without estimating obstacle movement, by identifying increases or decreases in object numbers within fixed blind spots that cannot be entered without passing through the sensor's visual field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If obstacle movement position estimation is used to determine dangerous blind spot regions, then the detection accuracy may be improved, but the system complexity and reliability deteriorate due to false identification when obstacles pass out of detection range
Solution Approach 1:
The patent extracts and removes the obstacle movement position estimation function from the system. Instead of estimating where obstacles may move to, the system only detects actual obstacle positions within the sensor's detection range and uses this concrete information to determine blind spot regions, eliminating the source of false identification while maintaining detection accuracy
Solution Approach 2:
The system uses the sensor's own detection results directly to determine blind spot regions without requiring external estimation algorithms. By relying on actual detected obstacle positions rather than predicted movement positions, the system achieves reliable operation without false positives
2Reliability
If obstacle movement position estimation is implemented, then potential dangerous regions can be identified, but the device complexity increases due to additional estimation algorithms
Solution Approach 1:
The patent removes the complex obstacle movement position estimation algorithm from the system entirely. The simplified approach uses only the sensor's direct detection results to determine blind spot regions, achieving reliable identification of dangerous areas without requiring complex estimation algorithms
Solution Approach 2:
Instead of estimating future obstacle positions to identify dangerous regions, the patent inverts the approach by using actual detected obstacle positions to determine which blind spot regions are currently dangerous. This reversal eliminates the need for complex estimation while maintaining reliability
Data Source
AI summary
An object detection device that determines whether or not an object is present in a blind spot of a sensor mounted on a moving object includes an acquisition unit configured to acquire an entry/exit status of the object into/from a closed blind spot of the sensor on the basis of a detection result from the sensor, and a determination unit configured to determine the presence or absence of the object in the closed blind spot on the basis of the entry/exit status.