Method of extracting circular region from fringe image

Details Method of extracting circular region from fringe image Method of extracting circular region from fringe image

2005-09-27

2005-09-27

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By light interference

Reexamination Certificate

active

06950191

ABSTRACT:
A circular region extracting method captures onto a coordinate system a fringe image of a sample having a circular region to be analyzed within an area to be observed, binary-codes the fringe image of the area by a fringe analysis method on the coordinate system, places a plurality of linear gratings in parallel with each other with a predetermined interval on thus binary-coded coordinate system, and uses the linear gratings so as to extract a circular image region representing the region to be analyzed on the coordinate system.

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patent: 6532073 (2003-03-01), Ge
patent: 6693715 (2004-02-01), Ge
patent: 6768554 (2004-07-01), Ge
patent: 6859566 (2005-02-01), Sun

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