Method and device for detecting an object in a vehicle in particular for occupant protection systems
First Claim
Patent Images
1. A method for detecting a position of a backrest of a vehicle seat, comprising:
- registering a 3D image area in an interior of the vehicle by a camera;
transmitting image information registered by the camera to an evaluation unit;
with the evaluation unit, selecting a specified section from the image area, the specified section located between a separating plane and a boundary plane, the separating plane and the boundary plane defined such that at least part of the specified section is at most partially obscured by an object, the boundary plane including and/or touching an edge of the backrest facing the camera, the boundary plane running parallel to a side surface of the backrest, the separating plane vertically transecting the vehicle seat and being parallel to the boundary plane;
determining the position of the backrest from the image information registered in the specified section.
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Abstract
In optical image processing methods for determining the occupation of a vehicle seat, it is advantageous to know the position of the vehicle seat (14), even in the case when said seat is occupied. The above is achieved, whereby the side surface of the backrest (11), facing the camera (30) is part of a boundary plane. A section (T, B), between a separating plane, cutting vertically through the vehicle seat and the boundary plane (B) is at least partly not covered by a seat occupant in the direction of the camera. By means of an image processing method the position of the seat may be determined.
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Citations
29 Claims
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1. A method for detecting a position of a backrest of a vehicle seat, comprising:
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registering a 3D image area in an interior of the vehicle by a camera; transmitting image information registered by the camera to an evaluation unit; with the evaluation unit, selecting a specified section from the image area, the specified section located between a separating plane and a boundary plane, the separating plane and the boundary plane defined such that at least part of the specified section is at most partially obscured by an object, the boundary plane including and/or touching an edge of the backrest facing the camera, the boundary plane running parallel to a side surface of the backrest, the separating plane vertically transecting the vehicle seat and being parallel to the boundary plane; determining the position of the backrest from the image information registered in the specified section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification