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Retina interlayer gray level analysis method based on 3D-OCT

A 3D-OCT, retinal layer technology, applied in the field of biomedical image processing, to achieve the effect of improving image quality

Active Publication Date: 2014-06-25
广州比格威医疗科技有限公司
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Problems solved by technology

However, there is a certain degree of subjectivity in the evaluation of retinal internal reflectance in clinical diagnosis, and it is mainly a qualitative process, which cannot give a quantitative index for the specific situation of RAO.

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  • Retina interlayer gray level analysis method based on 3D-OCT
  • Retina interlayer gray level analysis method based on 3D-OCT
  • Retina interlayer gray level analysis method based on 3D-OCT

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, a 3D-OCT-based retinal interlayer grayscale analysis method includes the following steps:

[0025] 1) Preprocess the input 3D-OCT image by using a bilinear filter to improve the image quality;

[0026] 2) Use graph search technology to segment the retina;

[0027] 3) Use the texture classification method to detect the RAO area;

[0028] 4) Finally, the grayscale analysis of the retinal layer is performed.

[0029] The step 2) specifically refers to: segmentation of retinal layers based on graph search technology, using graph search method to model the boundary between layers as the required layer surface, and treat this surface as a closed set; segmentation Generate similar terrain surfaces (that is, terrain-like surfaces); for multi-layer segmentation, construct a corresponding subgraph for each similar terrain surface; assign wei...

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Abstract

The invention discloses a retina interlayer gray level analysis method based on the 3D-OCT. The method includes the steps that firstly, an input 3D-OCT image is preprocessed; secondly, the multi-layer structure of the retina is segmented out through the image search technology; thirdly, detection is conducted through the texture classification method to find out the RAO area; fourthly, the gray levels of the retina layers are analyzed. According to the retina interlayer gray level analysis method based on the 3D-OCT, the gray levels of the retina layers in an RAO patient are analyzed in a quantitative mode, so that the qualitative judgment that the patient has the RAO disease is expressed in a quantitative mode, and quantitative indexes are provided, so that the severity degree of the RAO is independently and objectively judged. By proving the feasibility of the quantitative method, the foundation is laid for providing the objective basis of the illness state of the RAO patient for a doctor in future.

Description

technical field [0001] The invention relates to a 3D-OCT-based retinal interlayer grayscale analysis method, which belongs to the field of biomedical image processing. Background technique [0002] The retina is an important extension of brain organization responsible for the transformation of light signals into visual signals. The human body sends blood to the retina through the end of the artery, so the blockage of the retinal artery can lead to serious local bleeding problems and retinal dysfunction. The traditional method for the diagnosis and evaluation of RAO (Retinal artery occlusion, retinal artery occlusion) mainly relies on fluorescein angiography. complex. [0003] OCT (optical coherence tomography, optical coherence photography) technology has the advantages of non-invasive, high-speed, high-resolution, etc., and it can be found that the partial hemorrhage of the retina has a higher reflectivity in the OCT image, that is, a higher gray level value. Therefore,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00A61B3/14A61B3/12
Inventor 陈新建王莉芸向德辉陈浩宇陈新锋
Owner 广州比格威医疗科技有限公司
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