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A Method of Optic Disc Segmentation in Fundus Image Based on Fast Mean Shift

A fundus image and mean shift technology, applied in the field of image processing, can solve the problems of low segmentation efficiency, low robustness and low accuracy, and achieve the effects of improving accuracy, simple calculation and fast speed

Active Publication Date: 2022-03-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] In view of the problems of the above research, the purpose of the present invention is to provide a method for segmenting the optic disc of fundus images based on fast mean shift, which solves the problem of low accuracy, low robustness and low segmentation efficiency of the optic disc segmentation method in the prior art. The problem

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  • A Method of Optic Disc Segmentation in Fundus Image Based on Fast Mean Shift
  • A Method of Optic Disc Segmentation in Fundus Image Based on Fast Mean Shift
  • A Method of Optic Disc Segmentation in Fundus Image Based on Fast Mean Shift

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Embodiment

[0133] Download the public fundus image dataset HEI_MED on the Internet, and select the picture numbered 37 (original fundus image) for optic disc segmentation, such as figure 2 shown. Input the original fundus image for preprocessing, such as image 3 shown. Using the multi-light source color constancy algorithm, the preprocessed original fundus image is color corrected. Then, based on the color-corrected fundus image, superpixels are divided by fast mean shift, such as Figure 4 shown. The blood vessel map of the color-corrected fundus image is obtained by using Gaussian matched filtering, such as Figure 5 shown. Combining the obtained blood vessel information for optic disc positioning, such as Image 6 shown.

[0134] Select the most complete R component channel image of the optic disc in the optic disc candidate region image, and use the circular structural element of size 7 to perform morphological expansion. The R component channel map of the original fundus i...

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Abstract

The invention discloses a method for segmenting the optic disc of a fundus image based on fast mean shift, which belongs to the technical field of image processing and solves the problems of low accuracy, low robustness and low segmentation efficiency of the optic disc segmentation method in the prior art . In the present invention, the original fundus image is input for preprocessing, wherein the original fundus image is the fundus image to be analyzed; the multi-light source color constancy algorithm is used to correct the color of the fundus image after color correction; the blood vessels in the image obtained by combining the preprocessing Based on the color-corrected fundus image, the optic disc area is segmented by fast mean shift to obtain the optic disc image. The invention is used for optic disc segmentation of fundus images.

Description

technical field [0001] A fundus image optic disc segmentation method based on fast mean shift is used for optic disc segmentation of fundus images, and belongs to the technical field of image processing. Background technique [0002] The optic disc, also known as the optic disc, is one of the main physiological structures of the retina, from which the optic nerve and blood vessels enter the eye and extend to the periphery. In normal color retinal fundus images, the optic disc generally appears as an approximately circular yellowish or white bright spot with a diameter of about 1.5mm and contains relatively thick blood vessels. Optic disc segmentation has become a hot research topic in recent years. [0003] Optic disc segmentation aims to accurately locate the optic disc in the retinal fundus image and separate it from the background in the fundus image. [0004] In the existing optic disc segmentation technology, the Toeplitz matrix template is often used to filter the fu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/11G06T7/60G06T7/70G06T7/00G06V10/762G06K9/62
Inventor 孔轩彭真明王慧范文澜赵学功曹兆洋张文超袁国慧王卓然蒲恬何艳敏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA