RERBEE: Robust efficient registration via bifurcations and elongated elements applied to retinal fluorescein angiogram sequences

Adria Perez-Rovira, Raul Cabido, Emanuele Trucco, Stephen J. McKenna, Jean Pierre Hubschman

    Research output: Contribution to journalArticle

    17 Citations (Scopus)

    Abstract

    We present RERBEE (robust efficient registration via bifurcations and elongated elements), a novel feature-based registration algorithm able to correct local deformations in high-resolution ultra-wide field-of-view (UWFV) fluorescein angiogram (FA) sequences of the retina. The algorithm is able to cope with peripheral blurring, severe occlusions, presence of retinal pathologies and the change of image content due to the perfusion of the fluorescein dye in time. We have used the computational power of a graphics processor to increase the performance of the most computationally expensive parts of the algorithm by a factor of over 1300, enabling the algorithm to register a pair of 3900 3072 UWFV FA images in 5-10 min instead of the 5-7 h required using only the CPU. We demonstrate accurate results on real data with 267 image pairs from a total of 277 (96.4%) graded as correctly registered by a clinician and 10 (3.6%) graded as correctly registered with minor errors but usable for clinical purposes. Quantitative comparison with state-of-the-art intensity-based and feature-based registration methods using synthetic data is also reported. We also show some potential usage of a correctly aligned sequence for vein/artery discrimination and automatic lesion detection.

    Original languageEnglish
    Pages (from-to)140-150
    Number of pages11
    JournalIEEE Transactions on Medical Imaging
    Volume31
    Issue number1
    DOIs
    Publication statusPublished - Jan 2012

    Keywords

    • Deformable registration
    • fluorescein angiogram
    • graphics processing unit (GPU)
    • retina
    • IMAGE REGISTRATION
    • NONRIGID REGISTRATION
    • ELASTIC REGISTRATION
    • MEDICAL IMAGES
    • PREMATURITY
    • RETINOPATHY
    • DIAGNOSIS

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