Method of calibrating a biometric device
First Claim
1. A method of calibrating an optical biometric device useful to measure a physical characteristic of a physiological tissue comprising:
- (i) measuring the physical characteristic of at least two samples of a reference material selected from the group consisting of;
plastic, glass, fluid and gas with the optical biometric device to provide an actual output, wherein the reference material possesses at least one property of the physiological tissue which is required for the function of the optical biometric device and wherein the physical characteristic of each of the samples is pre-measured,(ii) calculating a calibration equation based on the actual output of the optical biometric device and the pre-measured physical characteristic of the samples; and
(iii) adjusting the actual output of the optical biometric device according to the calibration equation to yield a corrected output.
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Abstract
A method of calibrating a biometric device useful to measure a target dimension of a physiological tissue is provided comprising the steps of: measuring the target dimension of at least two samples of a reference material with the device to provide an actual output, wherein the reference material possesses at least one property of the tissue required for the function of the device and wherein each of the samples has a known target dimension; calculating a calibration equation based on the actual output of the device and the known target dimensions of the samples; and adjusting the actual output of the device according to the calibration equation to yield a corrected output. The calibration method provides a means of obtaining accurate tissue measurements. Also provided is a method of using a biometric device to measure a target dimension of a physiological tissue which incorporates calibration.
8 Citations
11 Claims
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1. A method of calibrating an optical biometric device useful to measure a physical characteristic of a physiological tissue comprising:
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(i) measuring the physical characteristic of at least two samples of a reference material selected from the group consisting of;
plastic, glass, fluid and gas with the optical biometric device to provide an actual output, wherein the reference material possesses at least one property of the physiological tissue which is required for the function of the optical biometric device and wherein the physical characteristic of each of the samples is pre-measured,(ii) calculating a calibration equation based on the actual output of the optical biometric device and the pre-measured physical characteristic of the samples; and (iii) adjusting the actual output of the optical biometric device according to the calibration equation to yield a corrected output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of measuring a physical characteristic of a physiological tissue using an optical biometric device comprising the steps of:
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(i) measuring the physical characteristic of at least two samples of a reference material selected from the group consisting of;
plastic, glass, fluid and gas with the optical biometric device to provide an actual output, wherein the reference material possesses at least one property of the tissue which is required for the function of the optical biometric device and wherein the physical characteristic of each of the samples is pre-measured;(ii) calculating a calibration equation based on the actual output of the optical biometric device and the pre-measured physical characteristic of the samples; (iii) adjusting the actual output of the optical biometric device according to the calibration equation to yield a corrected output; and (iv) measuring the physical characteristic of the tissue with the optical biometric device, wherein the measured physical characteristic is corrected according to the calibration equation. - View Dependent Claims (11)
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Specification