Method of detecting the location of a human being in three dimensions
First Claim
1. A method for detecting the location of a human being in three dimensions, the method comprising the steps of:
- inputting a spatial image of an area using a lens, at least a head of hair on a person being located in the areaidentifying at least one portion of the spatial image having density values within a predetermined range, the density values being based on brightness levels of the spatial image;
selecting at least one of the identified portions that has a top region forming the shape of an arch;
determining the width of the at least one selected portion;
calculating the distance from the lens to the person based on the horizontal width of the selected portion; and
calculating a horizontal coordinate value and a vertical coordinate value based on the distance from the lens to the person.
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Accused Products
Abstract
A method for detecting the location of a human being in three dimensions from a spatial image of an area that is generated using a lens. Portions of the image having density values within a predetermined range are labeled, those density values corresponding to brightness levels of the pixels in the image. A labeled portion corresponding to a part of the head is selected when the top region of that portion forms the shape of an arch. The width of the selected portion is then determined. Assuming that the part of the head having hair on all persons has a constant horizontal width, the distance from a lens to a human being is calculated based on the determined width of the selected portion. The coordinates of the person are determined based on that distance.
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Citations
9 Claims
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1. A method for detecting the location of a human being in three dimensions, the method comprising the steps of:
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inputting a spatial image of an area using a lens, at least a head of hair on a person being located in the area identifying at least one portion of the spatial image having density values within a predetermined range, the density values being based on brightness levels of the spatial image; selecting at least one of the identified portions that has a top region forming the shape of an arch; determining the width of the at least one selected portion; calculating the distance from the lens to the person based on the horizontal width of the selected portion; and calculating a horizontal coordinate value and a vertical coordinate value based on the distance from the lens to the person. - View Dependent Claims (2, 3)
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4. A method for determining distance from an observing instrument to a person, the method including the steps of:
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inputting a spatial image of an area within which at least a part of the person is located using the observing instrument; identifying a portion of the spatial image corresponding to a head of hair on the person; measuring a width of the portion of the spatial image identified as corresponding to the head of hair; and determining the distance from the observing instrument to the person based on the measured width. - View Dependent Claims (5, 6, 7, 8, 9)
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Specification