METHOD AND APPARATUS FOR MEASURING MOTION OF A SUBJECT USING A SERIES OF PARTIAL IMAGES FROM AN IMAGING SYSTEM
First Claim
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1. An apparatus for measuring the eye comprising:
- an optical coherence tomography (OCT) system having a radiation beam which is scanned over the eye;
a line-scan ophthalmoscope (LSO) for generating an image of the eye by scanning a line of light across the eye; and
a processor for controlling the OCT and LSO, said processor for capturing image data from the LSO corresponding to a position of the line of light on the eye and comparing the image data to a reference image to determine if the eye has moved and using that information to correct the positioning of the radiation beam used by the OCT.
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Abstract
A line scan imager is used to determine the motion of a subject. Each line of image data from the line scan imager is compared with a reference image. The location of a matching line in the reference image reveals the displacement of the subject. The current subject displacement can be determined based on each line of image data. The resulting displacement information can be used to correctly place other optical beams on the subject. The method can be applied to tracking the human eye to facilitate measurement, imaging, or treatment with a beam of optical radiation.
40 Citations
22 Claims
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1. An apparatus for measuring the eye comprising:
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an optical coherence tomography (OCT) system having a radiation beam which is scanned over the eye; a line-scan ophthalmoscope (LSO) for generating an image of the eye by scanning a line of light across the eye; and a processor for controlling the OCT and LSO, said processor for capturing image data from the LSO corresponding to a position of the line of light on the eye and comparing the image data to a reference image to determine if the eye has moved and using that information to correct the positioning of the radiation beam used by the OCT. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for measuring the eye comprising:
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an optical coherence tomography (OCT) system having a radiation beam which is scanned over the eye; a scanning optical imager for generating an image of the eye independent of the OCT system; and a processor for controlling the OCT and the scanning optical imager, said processor for capturing image data from the imager and comparing the image data to a reference image to determine if the eye has moved and using that information to correct the positioning of the radiation beam used by the OCT. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification