Aberrometer having reduced noise
US7874674B2 · kind B2 · utility
0Cited by
40References
19Claims
0Family size
Inventors
Key dates
| Filing date | Dec 12, 2007 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Apr 11, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/1015
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and apparatus for facilitating determination of centroids of image spots in an image containing an array of image spots generated by an aberrometer, the image comprising a first plurality of pixels each pixel having a corresponding intensity value, the method comprising calculating an average intensity value for a second plurality of pixels in a perimeter around a pixel, the average calculated using a subset of the second plurality exclusive of at least a portion of the pixels in the perimeter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.