用户登录
期刊信息
  • 主管单位:
  • 中国科学技术协会
  • 主办单位:
  • 中国仪器仪表学会、上海光学仪器研究所、中国光学学会工程光学专业委员会
  • 主  编:
  • 庄松林
  • 地  址:
  • 上海市军工路516号上海理工大学《光学仪器》编辑部
  • 邮政编码:
  • 200093
  • 联系电话:
  • 021-55270110
  • 电子邮件:
  • gxyq@usst.edu.cn
  • 国际标准刊号:
  • 1005-5630
  • 国内统一刊号:
  • 31-1504/TH
  • 邮发代号:
  • 单  价:
  • 15.00
  • 定  价:
  • 90.00
胶囊内窥系统的像质提升方法
Image quality enhancement method for capsule endoscope system
投稿时间:2022-02-21  
DOI:10.3969/j.issn.1005-5630.2022.004.004
中文关键词:  胶囊内窥镜  Q-type非球面  光学设计  图像处理
英文关键词:capsule endoscope  Q-type aspheres  optical design  image processing
基金项目:
作者单位E-mail
王星琪 上海理工大学 光电信息与计算机工程学院,上海 200093  
杨波 上海理工大学 光电信息与计算机工程学院,上海 200093 504534891@qq.com 
摘要点击次数: 2074
全文下载次数: 1435
中文摘要:
      针对目前胶囊内窥镜存在分辨率低,视场角有限,受噪声影响大等问题,提出了系统解决方案。通过引入Q-type非球面校正像差,得到一款全视场角为160°,相对孔径为F#3.0,系统总长为4.3 mm的内窥镜成像镜头,在140 lp/mm处各视场调制传递函数(MTF)值均大于0.3。光学系统成像质量的好坏不仅取决于镜头的性能,还与图像传感器有关,尤其在低照度环境下。通过分析传感器工作时各个阶段噪声的特性得到噪声模型。利用建立的噪声模型,合成了胶囊内窥镜图像数据集,并训练神经网络模型。对算法模型的测试结果表明,本文提出的综合解决方案可以有效地提高胶囊内窥镜系统的成像质量。
英文摘要:
      Aiming at the problems of the current capsule endoscope, such as low resolution, limited field of view, and great influence by noise, a system solution was proposed. First, by introducing Q-type aspheric surface to correct aberrations, an endoscope imaging lens with a full field of view of 160°, a relative aperture of F#3.0, and a total system length of 4.3mm was finally obtained. MTF values at 140 lp/mm were all greater than 0.3. The imaging quality of an optical system depends not only on the performance of the lens, but also on the image sensor, especially in low-light environments. The noise model was obtained by analyzing the noise characteristics of each stage when the sensor was working. Using the established noise model, the capsule endoscope image data set was synthesized, and the neural network model was trained. The test results of the algorithm model show that the proposed comprehensive solution can effectively improve the imaging quality of capsule endoscope system.
HTML   查看全文  查看/发表评论  下载PDF阅读器
关闭