Extraction of Retinal Blood Vessels by Using an Extended Matched Filter Based on Second Derivative of Gaussian

被引:0
|
作者
Nagendra Pratap Singh
Rajeev Srivastava
机构
[1] Indian Institute of Technology (BHU),Department of Computer Science and Engineering
来源
Proceedings of the National Academy of Sciences, India Section A: Physical Sciences | 2019年 / 89卷
关键词
Matched filter; Retinal blood vessels extraction; Second derivative of Gaussian; Local entropy thresholding;
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学科分类号
摘要
We propose a novel extension of matched filter approach by applying contrast-limited adaptive histogram equalization in pre-processing module and second derivative of Gaussian based matched filter to achieve a better retinal blood vessel structure. Proposed approach also concentrates towards extraction of thin as well as thick retinal blood vessels. The experimental results obtained for both DRIVE and STARE databases confirms that the proposed method has a higher true positive rate (sensitivity) as compared with other available retinal blood vessel segmentation approaches in literature. Further, the performance of the proposed method is also better for the extraction of pathological retinal images.
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页码:269 / 277
页数:8
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