Method and Apparatus for Making and Processing Aberration Measurements
First Claim
Patent Images
1. A method for determining a centroid coordinate of an image spot, comprising:
- a) determining a search region having a border;
b) identifying a first pixel in the search region, the pixel having a first intensity value;
c) determining an upper threshold intensity value greater than the first intensity value;
d) searching for a second pixel within the search region having an intensity value that is greater than the upper threshold intensity value; and
e) upon finding the second pixel, designating the first pixel an integration region center.
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Abstract
A method for determining a centroid coordinate of an image spot, comprising a) determining a search region having a border, b) identifying a first pixel in the search region, the pixel having a first intensity value, c) determining an upper threshold intensity value greater than the first intensity value, d) searching for a second pixel within the search region having an intensity value that is greater than the upper threshold intensity value, and e) upon finding the second pixel, designating the first pixel an integration region center.
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Citations
10 Claims
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1. A method for determining a centroid coordinate of an image spot, comprising:
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a) determining a search region having a border; b) identifying a first pixel in the search region, the pixel having a first intensity value; c) determining an upper threshold intensity value greater than the first intensity value; d) searching for a second pixel within the search region having an intensity value that is greater than the upper threshold intensity value; and e) upon finding the second pixel, designating the first pixel an integration region center. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for measuring an ocular aberration, comprising:
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an aberrometer including a lenslet component for forming an image containing an array of image spots; a sensor positioned to detect the image spot array; a processor component including executable software that provides an instruction for determining a centroid coordinate of each of said image spots, wherein the instruction comprises; a) determining a search region having a border; b) identifying a first pixel in the search region, the pixel having a first intensity value; c) determining an upper threshold intensity value greater than the first intensity value; d) searching for a second pixel within the search region having an intensity value that is greater than the upper threshold intensity value; and e) upon finding the second pixel, designating the first pixel an integration region center. - View Dependent Claims (8, 9, 10)
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Specification