Intrusion detection system using linear imaging
First Claim
1. A method of detecting an intrusion condition of a vehicle having an occupant compartment partially defined by an outer structure of the vehicle, said method comprising the steps of:
- actuating an illuminator having a limited field of illumination extending within the vehicle occupant compartment adjacent the vehicle outer structure;
actuating an imager that has a field of view that substantially coincides with the field of illumination of the illuminator;
creating a first image of objects in the field of illumination when the illuminator is actuated;
creating a second image of objects in the field of illumination when the illuminator is not actuated;
subtracting the first image from the second image to establish a sample image;
determining the existence of an intrusion condition of the vehicle on the basis of a comparison of at least two sample images.
4 Assignments
0 Petitions
Accused Products
Abstract
A vehicle intrusion detection system (10) for detecting an intrusion condition of a vehicle (12) having an occupant compartment (14) partially defined by an outer structure (30) of the vehicle, comprises an actuatable illuminator (40) mounted in the vehicle and having a limited field of illumination (52) extending within the vehicle occupant compartment adjacent the vehicle outer structure. A linear imager (60) mounted in the vehicle (12) has a field of view (62) that substantially coincides with the field of illumination (52) of the illuminator (40). A controller (70) compares a first image taken by the imager (60) when the illuminator (40) is actuated and a second image taken by the imager when the illuminator is unactuated to help determine the existence of an intrusion condition of the vehicle.
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Citations
25 Claims
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1. A method of detecting an intrusion condition of a vehicle having an occupant compartment partially defined by an outer structure of the vehicle, said method comprising the steps of:
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actuating an illuminator having a limited field of illumination extending within the vehicle occupant compartment adjacent the vehicle outer structure;
actuating an imager that has a field of view that substantially coincides with the field of illumination of the illuminator;
creating a first image of objects in the field of illumination when the illuminator is actuated;
creating a second image of objects in the field of illumination when the illuminator is not actuated;
subtracting the first image from the second image to establish a sample image;
determining the existence of an intrusion condition of the vehicle on the basis of a comparison of at least two sample images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of detecting an intrusion condition of a vehicle having an occupant compartment, said method comprising the steps of:
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illuminating a predetermined field of illumination in the vehicle interior that is less than 5% of the vehicle occupant compartment, for a first predetermined period of time of less than ten milliseconds;
creating a first image of objects in the field of illumination when the illuminator is actuated during the first period of time;
when the illuminator is not actuated, creating a second image of objects in the field of illumination during a second predetermined period of time of less than then milliseconds;
subtracting the first image from the second image to establish a sample image; and
determining the existence of an intrusion condition of the vehicle on the basis of a comparison of at least two sample images. - View Dependent Claims (18, 19)
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20. A vehicle intrusion detection system for detecting an intrusion condition of a vehicle having an occupant compartment partially defined by an outer structure of the vehicle, said system comprising:
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an actuatable illuminator mounted in the vehicle and having a limited field of illumination extending within the vehicle occupant compartment adjacent the vehicle outer structure;
a linear imager mounted in the vehicle and having a field of view that substantially coincides with the field of illumination of said illuminator; and
means for comparing a first image taken by said imager when said illuminator is actuated and a second image taken by said imager when said illuminator is unactuated to help determine the existence of an intrusion condition of the vehicle. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification