Real-time correction of geometric distortion artefacts in large-volume optical coherence tomography

被引：7
|
作者：
Van der Jeught, Sam [1 ]
Buytaert, Jan A. N. [1 ]
Bradu, Adrian [2 ]
Podoleanu, Adrian Gh [2 ]
Dirckx, Joris J. J. [1 ]
机构：
[1] Univ Antwerp, Lab Biomed Phys, B-2020 Antwerp, Belgium
[2] Univ Kent, Sch Phys Sci, Appl Opt Grp, Canterbury CT2 7NH, Kent, England
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 2013年 / 24卷 / 05期
关键词：
optical coherence tomography; real time; GPU; distortion correction;
D O I：
10.1088/0957-0233/24/5/057001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Large-volume optical coherence tomography (OCT) setups employ scanning mirrors and suffer from geometric distortion artefacts in which the degree of distortion is determined by the maximum angles over which the mirrors rotate. In this note, we describe a straightforward coordinate transformation scheme to correct for these artefacts in three dimensions, creating an alternative to previously reported ray-tracing schemes. We demonstrate that this recalibration procedure can be applied in real time by implementing the proposed algorithm on the graphics card of a standard computer, making it useful for topography applications. The accuracy of the proposed calibration procedure is validated over an imaging volume of 12.35 x 10.13 x 2.36 mm(3) using optical moire measurements of a highly curved object.
引用
收藏
页数：5
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