Journal
IEEE SIGNAL PROCESSING LETTERS
Volume 26, Issue 10, Pages 1511-1515Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LSP.2019.2938631
Keywords
Retinal vessel segmentation; filamentary structures; optimal adaptive filters; inverse problem; regularization
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The problems of filamentary structures segmentation encompass retinal vessel detection in fundus images, reconstruction and tracing of neurons in microscopic images and segmentation of human vasculatures in two-dimensional digital angiography. In this letter, we focus on retinal vessel segmentation which is an important and challenging problem among others. Many retinal vessel segmentation algorithms have been developed, where most of them rely on the filtering technique. However, the available filters suffer from undesirable responses at some vessel and non-vessel structures. Thus, we propose a new framework based on optimal adaptive filters for retinal vessel segmentation. The filter coefficients are obtained by solving multiple inverse problems under a regularization framework. The performance of the proposed framework is evaluated on fundus images from the DRIVE and STARE datasets. In the experimental section, we show that the proposed framework outperforms all of the compared methods in four indicators namely sensitivity, F1-score, G-mean and Mathews correlation coefficient.
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