Novel method for edge detection of retinal vessels based on the model of the retinal vascular network and mathematical morphology

Lei Xu; Xiaoxiang Zheng; Hengyi Zhang; Yajun Yu

doi:10.1117/12.323583

25 September 1998 Novel method for edge detection of retinal vessels based on the model of the retinal vascular network and mathematical morphology

Lei Xu, Xiaoxiang Zheng, Hengyi Zhang, Yajun Yu

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Proceedings Volume 3545, International Symposium on Multispectral Image Processing (ISMIP'98); (1998) https://doi.org/10.1117/12.323583
Event: International Symposium on Multispectral Image Processing, 1998, Wuhan, China

Abstract

Accurate edge detection of retinal vessels is a prerequisite for quantitative analysis of subtle morphological changes of retinal vessels under different pathological conditions. A novel method for edge detection of retinal vessels is presented in this paper. Methods: (1) Wavelet-based image preprocessing. (2) The signed edge detection algorithm and mathematical morphological operation are applied to get the approximate regions that contain retinal vessels. (3) By convolving the preprocessed image with a LoG operator only on the detected approximate regions of retinal vessels, followed by edges refining, clear edge maps of the retinal vessels are fast obtained. Results: A detailed performance evaluation together with the existing techniques is given to demonstrate the strong features of our method. Conclusions: True edge locations of retinal vessels can be fast detected with continuous structures of retinal vessels, less non- vessel segments left and insensitivity to noise. The method is also suitable for other application fields such as road edge detection.

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Lei Xu, Xiaoxiang Zheng, Hengyi Zhang, and Yajun Yu "Novel method for edge detection of retinal vessels based on the model of the retinal vascular network and mathematical morphology", Proc. SPIE 3545, International Symposium on Multispectral Image Processing (ISMIP'98), (25 September 1998); https://doi.org/10.1117/12.323583

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KEYWORDS

Edge detection

Detection and tracking algorithms

Image segmentation

Mathematical morphology

Image enhancement

Mathematical modeling

Eye models

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