Driver Gaze Correction for Accurate Side Mirror Watching Detection
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Solution Overview
Problem
Judging whether an occupant is watching a vehicle mirror is technically challenging and requires high accuracy in estimating the line-of-sight.
Innovation Solution
A driving support device comprising a peripheral information acquisition unit, an occupant information acquisition unit, an outside-world information detection unit, a line-of-sight estimation unit, and a line-of-sight correction unit, which acquires and corrects the occupant's line-of-sight based on relative speed and position of surrounding vehicles, and accounts for occupant status like wearing glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional line-of-sight estimation methods are used, then the system structure remains simple, but the estimation accuracy is insufficient for determining mirror watching behavior
Solution Approach 1:
The patent introduces an external vehicle detection unit that detects other vehicles as an intermediary reference point. This external object serves as a mediator to establish a coordinate system for correcting the line-of-sight direction, transforming the complex direct measurement of mirror watching into a two-step process: first estimate line-of-sight, then correct using external vehicle position
Solution Approach 2:
The system implements feedback by using the detected position of other vehicles to generate correction values that are fed back to adjust the initially estimated line-of-sight direction. This closed-loop approach continuously refines the estimation accuracy by comparing the estimated gaze direction with the actual spatial relationship to external vehicles
2Reliability
If the system monitors line-of-sight continuously to determine mirror watching, then the accuracy of determining mirror watching behavior improves, but the computational load and processing time increase
Solution Approach 1:
The system performs preliminary action by pre-establishing the coordinate system transformation relationships and correction algorithms before actual mirror watching determination. The line-of-sight estimation and correction framework is prepared in advance, allowing rapid processing when mirror watching behavior needs to be determined without performing complex calculations in real-time
Data Source
AI summary
A driving support device is provided which can estimate the line-of-sight of an occupant with high accuracy. A driving support device 11 includes: a peripheral information acquisition unit 40 which acquires peripheral information of the periphery of a vehicle 1; a driver monitor camera 50 which acquires occupant information related to the occupant of the vehicle 1; an outside-world information detection unit 201 which detects the outside-world information including the position and speed of the target in the surroundings of the vehicle 1 based on the peripheral information; a line-of-sight estimation unit 202 which estimates the line-of-sight of the occupant of the vehicle 1 based on the occupant information; and a line-of-sight correction unit 203 which corrects the estimated line-of-sight, based on the outside-world information detected by the outside-world information detection unit 201.