计算机科学 ›› 2022, Vol. 49 ›› Issue (3): 204-210.doi: 10.11896/jsjkx.201100085

• 计算机图形学&多媒体 • 上一篇    下一篇

基于眼前节相干光断层扫描成像的核性白内障分类算法

章晓庆1, 方建生1, 肖尊杰1, 陈浜2, RisaHIGASHITA3, 陈婉4, 袁进4, 刘江1,2   

  1. 1 南方科技大学计算机科学与工程系 广东 深圳518055
    2 中国科学院宁波材料技术与工程研究所慈溪生物医学工程研究所 浙江 宁波315201
    3 Tomey公司 日本 名古屋4510051
    4 中山大学中山眼科中心 广州510060
  • 收稿日期:2020-11-12 修回日期:2021-03-22 出版日期:2022-03-15 发布日期:2022-03-15
  • 通讯作者: 刘江(liuj@sustech.edu.cn)
  • 作者简介:(11930927@mail.sustech.edu.cn)
  • 基金资助:
    广东省重点实验室项目(2020B121201001); 广东省普通高校重点领域专项基金(2020ZDZX3043)

Classification Algorithm of Nuclear Cataract Based on Anterior Segment Coherence Tomography Image

ZHANG Xiao-qing1, FANG Jian-sheng1, XIAO Zun-jie1, CHEN Bang2, Risa HIGASHITA3, CHEN Wan4, YUAN Jin4, LIU Jiang1,2   

  1. 1 Department of Computer Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong 518055,China
    2 Cixi Institute of Biomedical Engineering,Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo, Zhejiang 315201,China
    3 Tomey Corporation,Nagoya 4510051,Japan
    4 Zhongshan Ophthalmic Center,Sun Yat-sen University,Guangzhou 510060,China
  • Received:2020-11-12 Revised:2021-03-22 Online:2022-03-15 Published:2022-03-15
  • About author:ZHANG Xiao-qing,born in 1993,Ph.D candidate,is a student member of China Computer Federation.His main research interests include machine lear-ning and medical image processing.
    LIU Jiang,born in 1968,Ph.D,professor,Ph.D supervisor.His main research interests include medical image proces-sing and artificial intelligence.
  • Supported by:
    Guangdong Provincial Key Laboratory(2020B121201001) and Key areas of Guangdong Province Colleges and Universities Special Funding(2020ZDZX3043).

摘要: 白内障是导致视觉损害和致盲的主要眼病,眼前节光学相干断层成像技术(Anterior Segment Optical Coherence Tomography,AS-OCT)具有非接触、高分辨率、检查快速、客观定量化测量等特点,在临床上已经被广泛应用于眼病的诊断。目前缺乏基于眼前节OCT图像的核性白内障分类研究工作,为此提出了一种基于眼前节OCT图像的核性白内障分类算法。首先,利用自适应阈值方法、边缘检测 Canny 算法和手工校正相结合的方式从眼前节OCT图像中提取晶状体的核性区域;然后,基于图像强度和直方图的特征统计方法提取18个像素特征,并应用皮尔逊相关系数方法分析提取像素特征与核性白内障严重程度之间的相关性;最后,利用随机森林算法构建分类模型,从而得到核性白内障分类结果。在一个眼前节OCT图像数据集上的实验结果表明,所提算法对核性白内障严重程度的分类准确率和召回率分别达到了75.53%和74.04%,具有作为核性白内障临床诊断的定量分析参考工具的潜力。

关键词: 白内障, 核性区域, 机器学习, 晶状体, 随机森林, 眼前节光学相干断层成像

Abstract: Cataract is a main ocular disease for visual impairment and blindness.Anterior segment optical coherence tomography (AS-OCT) technique has the characteristics of non-invasiveness,high resolution,rapid inspection,and objective quantitative measurement.AS-OCT images have been widely used for the diagnosis of ocular diseases in clinical ophthalmology.Inthecurrent,it is lack of the research on classification methods of nuclear cataract based on AS-OCT images.To this end,this paper proposes a nuclear cataract classification method based on AS-OCT images.First,the nucleus region of the lens is extracted from AS-OCT images using a combination of adaptive threshold method,edge detection Canny algorithm and manual correction pattern.Then,eighteen pixel features are extracted based on image intensity and histogram feature statistical methods,and the Pearson correlation coefficient method is used to analyze the correlation between the extracted pixel features and the severity of nuclear cataract.Finally,the random forest algorithm is used to build a classification model for getting nuclear cataract classification results.Experimental results on an AS-OCT image dataset show that the proposed method achieves the accuracy and recall with 75.53% and 74.04% respectively.Therefore,the proposed method has the potential as a quantitative analysis reference tool for the clinical diagnosis of nuclear cataract.

Key words: Anterior segment optical coherence tomography, Cataract, Lens, Machine learning, Nuclear region, Random forest

中图分类号: 

  • TP391
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