System and method of awareness detection
First Claim
1. An awareness detection system comprising:
- an imaging device positioned to obtain a plurality of images of at least a portion of a subject'"'"'s head; and
an awareness processor in communication with said imaging device, wherein said awareness processor receives said plurality of images from said imaging device and performs the steps comprising;
conducting a two-point head pose analysis of said subject and generating a head pose result when two eyes of said subject are located;
conducting a one-point head pose analysis of said subject and generating a head pose result when only one eye of said subject is located;
conducting a zero-point head pose analysis of said subject and generating a head pose result when zero said eyes of said subject are located;
detecting at least one point of interest in said plurality of images;
conducting a motion analysis of said plurality of images to estimate a head pose of said subject based upon said generated head pose result, wherein a motion vector for each said at least one point of interest is determined; and
determining a state of awareness of said subject based upon said motion analysis.
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Accused Products
Abstract
An awareness detection system and method are provided. The system includes an imaging device positioned to obtain a plurality of images of at least a portion of a subject'"'"'s head, and an awareness processor in communication with the imaging device. The awareness processor receives an image from the imaging device and performs the steps including conducting a two-point head pose analysis when two eyes of the subject are located, conducting a one-point head pose analysis when only one eye of the subject is located, and conducting a zero-point head pose analysis when zero eyes of the subject are located. The awareness processor further performs the steps of detecting at least one point of interest in the image, conducting a motion analysis of the image to estimate a head pose of the subject, and determining a state of awareness of the subject.
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Citations
21 Claims
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1. An awareness detection system comprising:
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an imaging device positioned to obtain a plurality of images of at least a portion of a subject'"'"'s head; and an awareness processor in communication with said imaging device, wherein said awareness processor receives said plurality of images from said imaging device and performs the steps comprising; conducting a two-point head pose analysis of said subject and generating a head pose result when two eyes of said subject are located; conducting a one-point head pose analysis of said subject and generating a head pose result when only one eye of said subject is located; conducting a zero-point head pose analysis of said subject and generating a head pose result when zero said eyes of said subject are located; detecting at least one point of interest in said plurality of images; conducting a motion analysis of said plurality of images to estimate a head pose of said subject based upon said generated head pose result, wherein a motion vector for each said at least one point of interest is determined; and determining a state of awareness of said subject based upon said motion analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of detecting awareness of a subject, said method comprising the steps of:
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obtaining a plurality of images of at least a portion of a subject; conducting a two-point head pose analysis of said subject and generating a head pose result when two eyes of said subject are located; conducting a one-point head pose analysis of said subject and generating a head pose result when only one said eye of said subject is located; conducting a zero-point head pose analysis of said subject and generating a head pose result when zero of said eyes of said subject are located; detecting at least one point of interest in said plurality of images; conducting a motion analysis of said plurality of images to estimate a head pose of said subject based upon said head pose result, wherein a motion vector for each said at least one point of interest is determined; and determining a state of awareness of said subject based upon said motion analysis. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of detecting awareness of a subject, said method comprising the steps of:
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obtaining a plurality of images of at least a portion of a subject; conducting a two-point head pose analysis of said subject and generating a head pose result when two eyes of said subject are located; conducting a one-point head pose analysis of said subject and generating a head pose result when only one said eye of said subject is located; conducting a zero-point head pose analysis of said subject and generating a head pose result when zero of said eyes of said subject are located; detecting at least one point of interest in said plurality of images; determining a motion vector for each said at least one point of interest; clustering said motion vectors for each of said at least one point of interest into groups based upon at least one of an orientation of said motion vector, a magnitude of said motion vector, and a spatial position of said motion vector; representing each said cluster with a dominate motion vector and forming a graph of each said dominate motion vector having a motion field, an orientation field, and a position field; matching said graph with at least one template that corresponds to graphs relating to prior information processed by an awareness processor; classifying at least one segmented area that corresponds to said dominate motion vector; monitoring said dominate motion vector across multiple said images for classifying said at least one point of interest in order to estimate a head pose of said subject; and determining a state of awareness of said subject that is a driver of a vehicle based upon said classification. - View Dependent Claims (20, 21)
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Specification