Local descriptor for retinal fundus image registration

Ramli, Roziana and Idris, Mohd Yamani Idna and Hasikin, Khairunnisa and Karim, Noor Khairiah A. and Wahab, Ainuddin Wahid Abdul and Ahmedy, Ismail and Ahmedy, Fatimah and Arof, Hamzah (2020) Local descriptor for retinal fundus image registration. IET Computer Vision, 14 (4). pp. 144-153. ISSN 1751-9632, DOI https://doi.org/10.1049/iet-cvi.2019.0623.

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Official URL: https://doi.org/10.1049/iet-cvi.2019.0623


A feature-based retinal image registration (RIR) technique aligns multiple fundus images and composed of pre-processing, feature point extraction, feature descriptor, matching and geometrical transformation. Challenges in RIR include difference in scaling, intensity and rotation between images. The scale and intensity differences can be minimised with consistent imaging setup and image enhancement during the pre-processing, respectively. The rotation can be addressed with feature descriptor method that robust to varying rotation. Therefore, a feature descriptor method is proposed based on statistical properties (FiSP) to describe the circular region surrounding the feature point. From the experiments on public Fundus Image Registration dataset, FiSP established 99.227% average correct matches for rotations between 0° and 180°. Then, FiSP is paired with Harris corner, scale-invariant feature transform (SIFT), speeded-up robust feature (SURF), Ghassabi's and D-Saddle feature point extraction methods to assess its registration performance and compare with the existing feature-based RIR techniques, namely generalised dual-bootstrap iterative closet point (GDB-ICP), Harris-partial intensity invariant feature descriptor (PIIFD), Ghassabi's-SIFT, H-M 16, H-M 17 and D-Saddle-histogram of oriented gradients (HOG). The combination of SIFT-FiSP registered 64.179% of the image pairs and significantly outperformed other techniques with mean difference between 25.373 and 60.448% (p = <0.001*). © The Institution of Engineering and Technology 2020

Item Type: Article
Funders: Postgraduate Research Grant under grant PG039-2015B, MyBrain15 scheme of the Ministry of Higher Education, Malaysia, RU Geran RF010A-2018
Uncontrolled Keywords: Retina Image; Retina Blood Vessel; Hypertension Retinopathy
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
R Medicine
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Computer Science & Information Technology
Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 13 Aug 2020 05:04
Last Modified: 13 Aug 2020 05:04
URI: http://eprints.um.edu.my/id/eprint/25334

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