Occupant information detection system
First Claim
1. An occupant information detection system for detecting information related to a vehicle occupant on a vehicle seat, comprising:
- an image detecting device configured to face a vehicle seat area and obtain a three-dimensional image;
an information extraction processing section configured to extract information related to a three-dimensional surface profile of a detected object on a vehicle seat based on the three-dimensional image;
a conversion processing section configured to convert the extracted information into numerical coordinates of a predetermined coordinate system;
a computation processing section configured to derive a computed value by subtracting an average of first and second coordinate components from a third coordinate component, wherein the first and second coordinate components are arbitrary points and the third coordinate component is a middle point of the arbitrary points on a coordinate axis extending between the detected object and the image detecting section in the numerical coordinates; and
a determination processing section determining the concave-convex shape of a line segment formed by the arbitrary points and the middle point based on the computed value;
wherein the determination processing section is configured to determine that the line segment forms a convex shape as seen from the image detecting section when the computed value is negative, that the line segment forms a concave shape as seen from the image detecting section when the computed value is positive, and that the line segment forms a plane when the computed value is zero.
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Accused Products
Abstract
An occupant information detection system for detecting information related to a vehicle occupant on a vehicle seat includes an image detecting section facing a vehicle seat area taking a three-dimensional image, an information extraction processing section extracting information related to a three-dimensional surface profile of a detected object on a vehicle seat based on the three-dimensional image, a conversion processing section converting the extracted information into numerical coordinates of a predetermined coordinate system, and a computation processing section deriving a computed value by subtracting an average of first and second coordinate components from a third coordinate component. The system also includes a determination processing section determining the concave-convex shape of a line segment formed by the arbitrary points and the middle point based on the computed value.
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Citations
16 Claims
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1. An occupant information detection system for detecting information related to a vehicle occupant on a vehicle seat, comprising:
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an image detecting device configured to face a vehicle seat area and obtain a three-dimensional image; an information extraction processing section configured to extract information related to a three-dimensional surface profile of a detected object on a vehicle seat based on the three-dimensional image; a conversion processing section configured to convert the extracted information into numerical coordinates of a predetermined coordinate system; a computation processing section configured to derive a computed value by subtracting an average of first and second coordinate components from a third coordinate component, wherein the first and second coordinate components are arbitrary points and the third coordinate component is a middle point of the arbitrary points on a coordinate axis extending between the detected object and the image detecting section in the numerical coordinates; and a determination processing section determining the concave-convex shape of a line segment formed by the arbitrary points and the middle point based on the computed value; wherein the determination processing section is configured to determine that the line segment forms a convex shape as seen from the image detecting section when the computed value is negative, that the line segment forms a concave shape as seen from the image detecting section when the computed value is positive, and that the line segment forms a plane when the computed value is zero. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An occupant information detection system for detecting information related to a vehicle occupant on a vehicle seat, comprising:
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an image detecting device configured to face a vehicle seat area and obtain a three-dimensional image; a controller including an information extraction processing section configured to extract information related to a three-dimensional surface profile of a detected object on the vehicle seat based on the three-dimensional image; wherein the controller further includes a conversion processing section configured to convert the extracted information into numerical coordinates of a predetermined coordinate system, and a computation processing section configured to derive a computed value by subtracting an average of first and second coordinate components from a third coordinate component, wherein the first and second coordinate components are arbitrary points and the third coordinate component is a middle point of the arbitrary points on a coordinate axis extending between the detected object and the image detecting section in the numerical coordinates; and wherein the controller further includes a determination processing section configured to determine the concave-convex shape of a line segment formed by the arbitrary points and the middle point based on the computed value, wherein the determination processing section is configured to determine that the line segment forms a convex shape when the computed value is negative and that the line segment forms a concave shape when the computed value is positive, and that the line segment forms a plane when the computed value is zero. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification