Object detection apparatus
First Claim
Patent Images
1. An object detection apparatus for detecting the states of an eye of an operator, said object detection device comprising:
- a light emission device which includes at least two emitters for selectively operating either one of said emitters for emitting light at a visible wavelength of approximately 0.76 μ
m with nearly no sunlight disturbance or a non-visible light wavelength of approximately 0.94 μ
m with nearly no sunlight disturbance, to the eye of the operator;
a camera which includes a light reception device for receiving reflected light from the eye of the operator;
a filter for allowing light to pass through at the wavelength; and
an image processor for analyzing the filtered light to determine the state of the eye of the operator.
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Abstract
Provided is an object detection apparatus, which includes a light emission device irradiating an object with light at a wavelength having less disturbance, and a light reception device including a filter that permits light having the aforementioned wavelength to pass, for receiving reflected light from the object. When the disturbance is sunlight, the light having a wavelength whereat the spectral radiative illuminance is damped is employed in accordance with the spectral characteristic of sunlight. In one embodiment, an object detection apparatus, which is mounted in a vehicle, employs, as an object, the eyes of a crew member in the vehicle, and obtains reflected images of the crew member'"'"'s corneas and retinas to calculate the observed point viewed by the crew member.
31 Citations
3 Claims
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1. An object detection apparatus for detecting the states of an eye of an operator, said object detection device comprising:
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a light emission device which includes at least two emitters for selectively operating either one of said emitters for emitting light at a visible wavelength of approximately 0.76 μ
m with nearly no sunlight disturbance or a non-visible light wavelength of approximately 0.94 μ
m with nearly no sunlight disturbance, to the eye of the operator;
a camera which includes a light reception device for receiving reflected light from the eye of the operator;
a filter for allowing light to pass through at the wavelength; and
an image processor for analyzing the filtered light to determine the state of the eye of the operator.
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2. An object detection apparatus mounted on a vehicle comprising:
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a light emission device which includes at least two emitters for selectively operating either one of said emitters for emitting light at a visible wavelength of approximately 0.76 μ
m with nearly no sunlight disturbance or a non-visble light wavelength of approximately 0.94 μ
m with nearly no sunlight disturbance, to an eye of an operator;
a camera which includes a light reception device for receiving reflected light from the eye of the operator;
a filter for allowing light to pass through at the wavelength;
a calculator module for calculating an observed point view by the operator upon said filtered light; and
an image processor for analyzing the filtered light upon the calculated point to determine the state of the eye of the operator.
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3. An object detection apparatus for detecting the states of an eye of an operator, said object detection device comprising:
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a light emission device which includes at least two emitters for selectively operating either one of said emitters for emitting light at a visible wavelength of approximately 0.76 μ
m with nearly no sunlight disturbance or a non-visble light wavelength of approximately 0.94 μ
m with nearly no sunlight disturbance, to the eye of the operator;
a camera which includes a light reception device for receiving reflected light from the eye of the operator;
a ratio module for detecting a signal to noise (S/N ratio) for the light at the wavelength;
a filter for allowing light to pass through at said wavelength with a selected S/N ratio; and
an image processor for analyzing the filtered light with said selected S/N ratio to determine the state of the eye of the operator.
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Specification
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Current AssigneeHonda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
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Original AssigneeHonda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
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InventorsKanasugi, Katsumi
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Primary Examiner(s)TONG, NINA C
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Application NumberUS09/348,700Publication NumberTime in Patent Office1,049 DaysField of Search340/540, 340/575, 340/576, 340/573.1, 250/221US Class Current340/540CPC Class CodesG01S 17/06 Systems determining positio...G01S 17/875 for determining attitudeG06V 10/143 Sensing or illuminating at ...G06V 40/18 Eye characteristics, e.g. o...
