Driving assistance system
First Claim
1. A driving assistance system provided in a vehicle that a driver operates, the system comprising:
- a detection unit that detects a distribution of a driver'"'"'s gaze;
an ideal computation unit that computes an ideal probability distribution of a driver'"'"'s gaze, from the distributions detected in a past and information, wherein the information is derived from the vehicle and a periphery surrounding the vehicle, the ideal computation unit includingan imaging unit that obtains image information ahead of the vehicle;
a visual-field-image accumulation unit that accumulates image information corresponding to a driver'"'"'s visual-field from the obtained image information and the detected distributions;
a first computation unit that computes a probability distribution of a driver'"'"'s gaze required for steering operation for traveling a road after obtaining a shape of the road from the accumulated image information, to thereby output a first result;
a second computation unit that computes a probability distribution of a driver'"'"'s gaze expected from a visual characteristic of the accumulated image information, to thereby output a second result; and
an addition unit that adds up the outputted first result and the outputted second result to thereby obtain the ideal gaze probability distribution;
a risk determination unit that determines presence of a risk when a difference between the detected distribution and the computed ideal probability distribution exceeds a given threshold; and
an output unit that outputs a result determined by the risk determination unit.
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Accused Products
Abstract
A driver'"'"'s gaze distribution is detected. Based on the detected distribution, an image corresponding to a driver'"'"'s visual-field is extracted from images photographed by a front monitor camera and is accumulated. A first driver'"'"'s gaze probability distribution necessary for steering operation is computed based on the accumulated images, and a second driver'"'"'s gaze probability distribution that is expected is computed based on visual characteristics within the images. An ideal gaze probability distribution is obtained by adding up the first and the second probability distributions. Presence of a risk is determined when the difference between the driver'"'"'s gaze and the ideal gaze probability distribution becomes a given threshold. A windshield display or a speaker outputs the determined result.
19 Citations
11 Claims
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1. A driving assistance system provided in a vehicle that a driver operates, the system comprising:
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a detection unit that detects a distribution of a driver'"'"'s gaze; an ideal computation unit that computes an ideal probability distribution of a driver'"'"'s gaze, from the distributions detected in a past and information, wherein the information is derived from the vehicle and a periphery surrounding the vehicle, the ideal computation unit including an imaging unit that obtains image information ahead of the vehicle; a visual-field-image accumulation unit that accumulates image information corresponding to a driver'"'"'s visual-field from the obtained image information and the detected distributions; a first computation unit that computes a probability distribution of a driver'"'"'s gaze required for steering operation for traveling a road after obtaining a shape of the road from the accumulated image information, to thereby output a first result; a second computation unit that computes a probability distribution of a driver'"'"'s gaze expected from a visual characteristic of the accumulated image information, to thereby output a second result; and an addition unit that adds up the outputted first result and the outputted second result to thereby obtain the ideal gaze probability distribution; a risk determination unit that determines presence of a risk when a difference between the detected distribution and the computed ideal probability distribution exceeds a given threshold; and an output unit that outputs a result determined by the risk determination unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification