Automatic montage of retinal images in adaptive optics confocal scanning laser ophthalmoscope

Hao Li; Jing Lu; Guohua Shi; Yudong Zhang

doi:10.1117/1.OE.51.5.057008

18 May 2012 Automatic montage of retinal images in adaptive optics confocal scanning laser ophthalmoscope

Hao Li, Jing Lu, Guohua Shi, Yudong Zhang

Author Affiliations +

Funded by: Chinese Academy of Sciences, Knowledge Innovation Program of the Chinese Academy of Sciences

Optical Engineering, Vol. 51, Issue 5, 057008 (May 2012). https://doi.org/10.1117/1.OE.51.5.057008

Abstract

We introduce an automatic technique to stitch retinal images recorded with an adaptive optics confocal scanning laser ophthalmoscope (AOSLO). The AOSLO images whose field size is 1.5 deg are recorded while the fixation target is moving according to a square pattern so as to cover a wide field of view. Principal components analysis-scale invariant feature transform is used to extract and match point features of the retinal images. With the matched point features, the affine transformation is used to stitch the images to generate eight montaged images. Then, the eight images are stitched together to construct a wide-field image by a cross-correlation algorithm. An image blending algorithm is also developed to reduce seam artifacts. With the proposed algorithms, a montage whose field size is approximately 10.5×9.6 deg is constructed.

Citation Download Citation

Hao Li, Jing Lu, Guohua Shi, and Yudong Zhang "Automatic montage of retinal images in adaptive optics confocal scanning laser ophthalmoscope," Optical Engineering 51(5), 057008 (18 May 2012). https://doi.org/10.1117/1.OE.51.5.057008

Published: 18 May 2012

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