中国组织工程研究

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

基于MATLAB视网膜视锥细胞的图像处理

赵超阳1,姚军平2,刘  勇2,戴  云3,谷  昕1,阴正勤1   

  1. 1重庆大学生物工程学院,重庆市 400044
    2解放军第三军医大学西南医院眼科,重庆市  400038
    3中科院成都光电技术研究所,四川省成都市  610000
  • 收稿日期:2012-08-10 修回日期:2012-09-13 出版日期:2013-04-09 发布日期:2013-04-09
  • 通讯作者: 阴正勤,博士后,主任医师,重庆大学生物工程学院,重庆市 400044 qinzyin@yahoo.com.cn
  • 作者简介:河南省漯河市人,汉族,2012年重庆大学毕业,硕士,主要从事人眼视觉修复及视觉假体研究。 zcychao@163.com

Processing of the retinal cone image based on the MATLAB

Zhao Chao-yang1, Yao Jun-ping2, Liu Yong2, Dai Yun3, Gu Xin1, Yin Zheng-qin1   

  1. 1 School of Bioengineering, Chongqing University, Chongqing  400044, China
    2 Department of Ophthalmology, Xinan Hospital, Third Military Medical University of Chinese PLA, Chongqing  400038, China
    3 Photoelectricity Institute of Chengdu, Chinese Academy of Sciences, Chengdu  610000, Sichuan Province, China
  • Received:2012-08-10 Revised:2012-09-13 Online:2013-04-09 Published:2013-04-09
  • Contact: Yin Zheng-qin, Doctor, Chief physician, School of Bioengineering, Chongqing University, Chongqing 400044, China qinzyin@yahoo.com.cn
  • About author:Zhao Chao-yang★, Master, School of Bioengineering, Chongqing University, Chongqing 400044, China zcychao@163.com
  • Supported by:

    the National 863 Program of China, No. 2007AA04Z324*; the Tackle Key Program of Chongqing City, No. CSTC,2010AB5118*

摘要:

背景:视网膜自适应光学成像系统所获取的视锥细胞图像具有灰度分布相对集中、亮点边缘比较模糊、存在伪轮廓及边缘相粘连的特点,寻找一种适合视锥细胞图像的处理算法来获取视网膜视锥细胞清晰轮廓成为今后工作的重点内容。
目的:采用MATLAB图像处理工具箱对视锥细胞图像进行边缘提取,获取其清晰的边缘轮廓。
方法:对30例正常受试者不同部位视锥细胞图像进行预处理、边缘提取和形态学处理,获取视锥细胞图像清晰的边缘轮廓;对处理后的图像进行细胞计数,并分析视锥细胞密度分布特性,进而来验证图像处理算法应用于视锥细胞分布特性研究的可行性。
结果与结论:获取了清晰的视网膜视锥细胞图像轮廓;从结果来看,随着远离黄斑中心凹,细胞密度呈现出降低的趋势,从黄斑中心凹偏0.5°到1°范围内,视网膜视锥细胞密度下降最快。结果提示:实验所设计的图像处理算法在研究视网膜视锥细胞分布特性方面是可行的。

关键词: 组织构建, 组织构建细胞学实验, 视网膜, 视锥细胞, 图像处理, 对比度拉伸, 边缘提取, Laplacian算子, 自适应光学, 黄斑中心凹, 形态学, 腐蚀与膨胀, 863项目

Abstract:

BACKGROUND: The cone cell for the image retina adaptive optical imaging system is characterized by the relatively concentrated gray distribution, vague window edge, the existing pseudo outline, and the adhesion of edge photograph. Looking for a suitable processing algorithm of the cone image to get the clear outline is the key content for the future work.
OBJECTIVE: To perform edge extraction of the retina cone cell image and get clear edge profile of the cone cell based on the MATLAB.  
METHODS: According to the retinal image of the different parts of 30 normal subjects, based on Mat lab image processing toolbox, we could preprocess the cone cell image, edge extraction and process morphological, and get the clear edge profile of the cone cell image. The cell numbers of processed image was counted, the cone distribution characteristics were analyzed, and then the feasibility of this study which designed image processing algorithm applied to the study of the distribution characteristics of cone cells were verified.
RESULTS AND CONCLUSION: A clear outline of the retinal cones image was obtained successfully. From the results of cone cell’s density, as far away from the center fovea of macula, the cell density presented a trend of reduction; from the center fovea of macula partial range 0.5° to 1°, the retinal cones density decreased rapidly. The findings indicated that the algorithm of the image processing designed in this study can be used to study the retinal characteristics of the cones distribution.

Key words: tissue construction, cytology experiment in tissue construction, retina, cone cells, image processing, contrast stretching, edge extraction, Laplacian operator, adaptive optics, fovea, morphology, corrosion and expansion, National “863&rdquo, Program of China

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