Image alignment system for use in laser ablation treatment...

Details Image alignment system for use in laser ablation treatment... Image alignment system for use in laser ablation treatment...

2011-05-03

2011-05-03

Farah, Ahmed M (Department: 3769)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

C351S205000, C351S212000

Reexamination Certificate

active

07934833

ABSTRACT:
A system and method for aligning a first and a second image of an eye includes making a determination of a limbus location on a first eye image and a second eye image. The limbus location of the first and the second eye images are then aligned in two dimensions. A second eye feature location is determined on the first and the second eye image. One of the first and the second eye image is relatively rotated, and a correlation is performed on the first and the second eye image at a plurality of relative rotational positions using the second eye feature location. From the correlation an optimal first and second image alignment is identified.

REFERENCES:
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patent: 2004/0143244 (2004-07-01), Gray et al.
patent: 2005/0024586 (2005-02-01), Teiwes et al.
patent: 2008/0273173 (2008-11-01), Grotehusmann et al.
patent: 2010/0157244 (2010-06-01), Leblanc
patent: WO02087442 (2002-11-01), None
patent: WO2004089214 (2004-10-01), None

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