A-RANSAC: Adaptive random sample consensus method in multimodal retinal image registration

被引：24

作者：

Hossein-Nejad, Zahra ^{[1
]}

Nasri, Mehdi ^{[2
]}

机构：

[1] Islamic Azad Univ, Sirjan Branch, Dept Elect Engn, Sirjan, Iran

[2] Islamic Azad Univ, Khomeinishahr Branch, Young Researchers & Elite Club, Khomeinishahr, Iran

来源：

BIOMEDICAL SIGNAL PROCESSING AND CONTROL | 2018年 / 45卷

关键词：

Angiographic imaging; Image registration; Retinal images; SIFT; RANSAC; FUNDUS IMAGES; MUTUAL-INFORMATION; FEATURE-EXTRACTION; ALGORITHM;

D O I：

10.1016/j.bspc.2018.06.002

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this paper, an adaptive Random Sample Consensus (A-RANSAC) method is proposed for multimodal retinal image registration. In this method, the features of two various images from images taken with different modalities such as FA (Fluorescein angiography) and RF (Red free) are extracted using a modified version of Scale Invariant Feature Transform method (SIFT) called SAR-SIFT which is originally used for Synthetic Aperture Radar images. Then, the matching performance between these images is enhanced using the proposed A-RANSAC. In the A-RANSAC method, the threshold value is chosen so that the Root Mean Square Error (RMSE) and the number of removed matches are optimized simultaneously. The efficiency of the proposed method has been investigated in other modes such as high resolution and low-quality retinal image registration in addition to multimodal registration. The simulation results on several retinal image datasets show that the proposed method improves the precision matching by 9.89% and rate of success by 25% on the average compared to the SAR-SIFT method. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：325 / 338

页数：14

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