Information notification apparatus and information notification method
First Claim
Patent Images
1. An information notification apparatus comprising:
- a camera configured to capture an image of a driver of a vehicle;
a memory; and
a processor coupled to the memory and configured to;
perform line-of-sight detection based on the image captured by the camera;
calculate a forward gaze degree of a gaze of the driver in accordance with a line-of-sight direction obtained in the line-of-sight detection, the forward gaze degree indicates whether the gaze of the driver is within a predetermined area of a direction in which the vehicle is traveling;
provide a notification to the driver in a first information when the forward gaze degree is lower than a first threshold; and
provide the notification to the driver in a second information when the forward gaze degree is higher than or equal to the first threshold, the second information includes less than the first information,wherein the processor further executes the notification in the second information when the forward gaze degree is lower than a second threshold which is lower than the first threshold,wherein the processor further classifies the forward gaze degree as a first group when a position at a time when the forward gaze degree was calculated is a traffic intersection, as a second group when an inter-vehicle distance at a time when the forward gaze degree was calculated is smaller than a predetermined value, and as a third group when the forward gaze degree is not classified as either the first group or the second group, after which the processor creates a forward gaze degree histogram for each of the first group, the second group, and the third group and sets the first threshold and the second threshold according to three forward gaze degree histograms related to the first group, the second group, and the third group.
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Abstract
An information notification apparatus includes a camera; a memory; and a processor coupled to the memory and configured to perform line-of-sight detection on an image captured by the camera, calculate a forward gaze degree of a gaze directed to a predetermined area in accordance with a line-of-sight direction obtained in line-of-sight detection; execute a notification to an outside in a first information if the forward gaze degree is lower than a first threshold; and execute the notification in a second information which information is less than the first information if the forward gaze degree is higher than or equal to the first threshold.
25 Citations
9 Claims
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1. An information notification apparatus comprising:
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a camera configured to capture an image of a driver of a vehicle; a memory; and a processor coupled to the memory and configured to; perform line-of-sight detection based on the image captured by the camera; calculate a forward gaze degree of a gaze of the driver in accordance with a line-of-sight direction obtained in the line-of-sight detection, the forward gaze degree indicates whether the gaze of the driver is within a predetermined area of a direction in which the vehicle is traveling; provide a notification to the driver in a first information when the forward gaze degree is lower than a first threshold; and provide the notification to the driver in a second information when the forward gaze degree is higher than or equal to the first threshold, the second information includes less than the first information, wherein the processor further executes the notification in the second information when the forward gaze degree is lower than a second threshold which is lower than the first threshold, wherein the processor further classifies the forward gaze degree as a first group when a position at a time when the forward gaze degree was calculated is a traffic intersection, as a second group when an inter-vehicle distance at a time when the forward gaze degree was calculated is smaller than a predetermined value, and as a third group when the forward gaze degree is not classified as either the first group or the second group, after which the processor creates a forward gaze degree histogram for each of the first group, the second group, and the third group and sets the first threshold and the second threshold according to three forward gaze degree histograms related to the first group, the second group, and the third group. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An information notification method comprising:
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capturing, with a camera, an image of a driver of a vehicle; performing, with a processor, line-of-sight detection based on the image captured by the camera, calculating, with the processor, a forward gaze degree of a gaze of the driver in accordance with a line-of-sight direction obtained in line-of-sight detection, the forward gaze degree indicates whether the gaze of the driver is within a predetermined area of a direction in which the vehicle is travelling; providing a notification to the driver in a first information when the forward gaze degree is lower than a first threshold; and providing the notification in a second information when the forward gaze degree is higher than or equal to the first threshold, the second information includes less information than the first information, wherein the processor further executes the notification in the second information when the forward gaze degree is lower than a second threshold which is lower than the first threshold, wherein the processor further classifies the forward gaze degree as a first group when a position at a time when the forward gaze degree was calculated is a traffic intersection, as a second group when an inter-vehicle distance at a time when the forward gaze degree was calculated is smaller than a predetermined value, and as a third group when the forward gaze degree is not classified as either the first group or the second group, after which the processor creates a forward gaze degree histogram for each of the first group, the second group, and the third group and sets the first threshold and the second threshold according to three forward gaze degree histograms related to the first group, the second group, and the third group.
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9. A vehicle-mounted apparatus to provide notifications to a driver, the vehicle-mounted apparatus comprising:
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a notification device configured to present notifications to the driver of a vehicle in a plurality of forms based on a workload of the driver; a memory; a processor coupled to the memory and the at least one notification device, the processor configured to; acquire a travelling direction of the vehicle; perform line-of-sight detection to determine a line-of-sight for the driver; calculate a gaze degree associated with the driver, the gaze degree indicating frequency of the determined line-of-sight of the driver included within a predetermined range of the travelling direction of the vehicle; classify the workload of the driver as low when the calculated forward gaze degree is lower than a threshold; classify the workload of the driver as high when the calculated forward gaze degree is higher than the threshold; provide a notification to the at least one notification device in a first information when the workload of the driver is classified as low; and provide the notification to the at least one notification device in a second information when the workload of the driver is classified as high, the second information includes less information than the first information, wherein the line-of-sight detection determines a line-of-sight vector for the driver that interconnects a central position of a pupil of the eyeball and a center of the curvature of the cornea, and the processor calculates the gaze degree by determining whether an angle formed by the line-of-sight vector and a vector of the traveling direction of the vehicle is within a predetermined range, wherein the processor further classifies the forward gaze degree as a first group when a position at a time when the forward gaze degree was calculated is a traffic intersection, as a second group when an inter-vehicle distance at a time when the forward gaze degree was calculated is smaller than a predetermined value, and as a third group when the forward gaze degree is not classified as either the first group or the second group, after which the processor creates a forward gaze degree histogram for each of the first group, the second group, and the third group and sets the first threshold and the second threshold according to three forward gaze degree histograms related to the first group, the second group, and the third group.
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Specification