Hyperacuity system and methods for real time and analog detection and kinematic state tracking
First Claim
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1. A method of calculating a position of a feature of an object at hyperacuity accuracy, the method comprising:
- receiving output signals from a plurality of sensors, wherein the plurality of sensors;
are configured in an array;
have overlapping spatial response profiles, wherein for each of the plurality of sensors, the spatial response profile is non-linear and is axio-symmetric about a respective center of the sensor; and
produce the output signals based on the spatial response profiles;
generating logarithmically amplified output signals by applying logarithmic amplification to each output signal;
multiplying the amplified output signals by predefined constants that are based on;
distances between each of the plurality of sensors and a physical origin of the array; and
a rate of response decay of each of the plurality of sensors; and
determining coordinates of the position of the feature with respect to the physical origin of the array by summing the logarithmically amplified output signals.
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Abstract
Methods and systems described herein determine a location of a tracked object with respect to a coordinate system of a sensor array by using analog signals from sensors having overlapping nonlinear responses. Hyperacuity and real time tracking are achieved by either digital or analog processing of the sensor signals. Multiple sensor arrays can be configured in a plane, on a hemisphere or other complex surface to act as a single sensor or to provide a wide field of view and zooming capabilities of the sensor array. The processing methods can be used to adjust to contrast reversals between an image and the background.
33 Citations
17 Claims
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1. A method of calculating a position of a feature of an object at hyperacuity accuracy, the method comprising:
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receiving output signals from a plurality of sensors, wherein the plurality of sensors; are configured in an array; have overlapping spatial response profiles, wherein for each of the plurality of sensors, the spatial response profile is non-linear and is axio-symmetric about a respective center of the sensor; and produce the output signals based on the spatial response profiles; generating logarithmically amplified output signals by applying logarithmic amplification to each output signal; multiplying the amplified output signals by predefined constants that are based on; distances between each of the plurality of sensors and a physical origin of the array; and a rate of response decay of each of the plurality of sensors; and determining coordinates of the position of the feature with respect to the physical origin of the array by summing the logarithmically amplified output signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tracking system for determining a position of a feature of an object at hyperacuity accuracy, the tracking system comprising:
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an array comprising a plurality of sensors, wherein for each of the plurality of sensors a spatial response profile is non-linear and is axio-symmetric about a respective center of the sensor, and the sensor produces an output signal based on the spatial response profile; and components configured to receive the output signals from the sensors, wherein, in response to receiving the output signals from the sensors, the components process the received output signals by; generating logarithmically amplified output signals by applying logarithmic amplification to each output signal; multiplying the amplified output signals by predefined constants that are based on; distances between each of the plurality of sensors and a physical origin of the array; and a rate of response decay of each of the plurality of sensors; and determining coordinates of the position of the feature with respect to the physical origin of the array by summing the logarithmically amplified output signals. - View Dependent Claims (9, 10, 11)
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12. A method of calculating positions of features of an object at hyperacuity accuracy, the method comprising:
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receiving output signals from a plurality of sensors, wherein the plurality of sensors; are configured in an array; have overlapping spatial response profiles, wherein for each of the plurality of sensors, the spatial response profile is non-linear and is axio-symmetric about a respective center of the sensor; and produce output signals based on the spatial response profiles; and processing the signals by; applying logarithmic amplification to each output signal; and determining positions of a plurality of dependent or independent features with respect to a physical origin of the array using a linear combination of the logarithmically amplified output signals, wherein; the independent features comprise focused images of respective objects; a quantity of features in the plurality of features is at most one less than a total number of the plurality of sensors; and determining the positions of the features uses at least two of the logarithmically amplified output signals comprising the logarithmically amplified output signals of a central sensor and of another sensor in the plurality of sensors. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification