Apparatus for identifying objects outside of a line-of-sight
First Claim
Patent Images
1. An optical system for non-line-of-sight object identification comprising:
- a coherent light source;
an optical field sampler providing a two-dimensional array of light sensor elements, the array positionable to receive reflections of light from a non-line-of-sight object illuminated by the coherent light source to produce a corresponding array of light sensor signals; and
a machine learning system receiving the array of light sensor signals and processing them according to training by a training set of light sensor signals to identify a given object within an object class of different objects, wherein the training set links different objects of the object class to light sensor signals associated with the different objects when those different objects are not within a line-of-sight of a light sensor collecting the light sensor signals and are illuminated by a coherent light source.
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Abstract
An optical field sensor is used to make phase measurements over an area of light reflected from an object outside a field of view of the light field sensor. These phase measurements are applied to a machine learning system trained with similar phase measurements from objects outside of a field of view to identify the object within a class of objects subject to the training.
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Citations
17 Claims
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1. An optical system for non-line-of-sight object identification comprising:
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a coherent light source; an optical field sampler providing a two-dimensional array of light sensor elements, the array positionable to receive reflections of light from a non-line-of-sight object illuminated by the coherent light source to produce a corresponding array of light sensor signals; and a machine learning system receiving the array of light sensor signals and processing them according to training by a training set of light sensor signals to identify a given object within an object class of different objects, wherein the training set links different objects of the object class to light sensor signals associated with the different objects when those different objects are not within a line-of-sight of a light sensor collecting the light sensor signals and are illuminated by a coherent light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of identifying a given object outside of a line-of-sight comprising:
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(a) creating a training set of light sensor signals associated with different objects of an object class when those objects are not within a line-of-sight of a light sensor producing the light sensor signals and are illuminated by a coherent light source; (b) training a machine learning system using the training set; (c) illuminating a given object with coherent light and collecting reflected light at a location outside of the line-of-sight of the object; and (d) processing the collected light using the trained machine learning system to identify a given object within the object class based on the collected light. - View Dependent Claims (15, 16, 17)
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Specification