Determining positional information of an object in space
First Claim
1. A method of determining positional information of a target object in a region of space within range of a light sensitive sensor, the method including:
- scanning the region of space monitored by the light sensitive sensor by selectively illuminating respective directionally oriented non-coplanar light sources of a plurality of directionally oriented light sources that (i) are mounted to a single surface and (ii) have at least some overlapping fields of illumination;
measuring, using the light sensitive sensor, one or more differences in an intensity of returning light emitted from the respective directionally oriented non-coplanar light sources and reflected from the target object as the target object moves through the region of space; and
recognizing signals in response to (i) positional information of the target object determined based on at least, a first position in space at a first time tO and a second position in space at a second time t1 sensed using the measured one or more differences in the intensity of the returning light and (ii) a non-coplanar movement of the target object.
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Accused Products
Abstract
The technology disclosed relates to determining positional information of an object in a field of view. In particular, it relates to calculating a distance of the object from a reference such as a sensor including scanning the field of view by selectively illuminating directionally oriented light sources and measuring one or more differences in property of returning light emitted from the light sources and reflected from the object. The property can be intensity or phase difference of the light. It also relates to finding an object in a region of space. In particular, it relates to scanning the region of space with directionally controllable illumination, determining a difference in a property of the illumination received for two or more points in the scanning, and determining positional information of the object based in part upon the points in the scanning corresponding to the difference in the property.
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Citations
20 Claims
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1. A method of determining positional information of a target object in a region of space within range of a light sensitive sensor, the method including:
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scanning the region of space monitored by the light sensitive sensor by selectively illuminating respective directionally oriented non-coplanar light sources of a plurality of directionally oriented light sources that (i) are mounted to a single surface and (ii) have at least some overlapping fields of illumination; measuring, using the light sensitive sensor, one or more differences in an intensity of returning light emitted from the respective directionally oriented non-coplanar light sources and reflected from the target object as the target object moves through the region of space; and recognizing signals in response to (i) positional information of the target object determined based on at least, a first position in space at a first time tO and a second position in space at a second time t1 sensed using the measured one or more differences in the intensity of the returning light and (ii) a non-coplanar movement of the target object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of determining positional information of a target object in a region of space within range of a light sensitive sensor, the method including:
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scanning the region of space monitored by the light sensitive sensor by selectively illuminating respective directionally oriented non-coplanar light sources of a plurality of directionally oriented light sources that (i) are mounted to a single surface and (ii) have at least some overlapping fields of illumination; measuring, using the light sensitive sensor, one or more differences in a property of returning light emitted from the respective directionally oriented non-coplanar light sources and reflected from the target object as the target object moves through the region of space; and recognizing signals in response to (i) positional information of the target object determined based on at least, a first position in space at a first time tO and a second position in space at a second time t1 sensed using the measured one or more differences in the property of the returning light and (ii) a non-coplanar movement of the target object. - View Dependent Claims (16)
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17. A method of determining positional information of an object in a region of space within range of a light sensitive sensor, the method including:
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scanning the region of space monitored by the light sensitive sensor with directionally controllable illumination from selected directionally oriented non-coplanar illumination sources of a set of directionally oriented illumination sources that are mounted to a single surface; detecting illumination in the region of space including illumination reflected by non-coplanar movement of the object as the object moves through the region of space; determining a difference in a property of the illumination received for two or more points in the scanning; determining positional information of the object to identify the non-coplanar movement of the object; and generating, by a computer system, a three-dimensional model of the object. - View Dependent Claims (18, 19, 20)
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Specification