传感技术学报2017，Vol.30Issue(5)：708-714,7.DOI:10.3969/j.issn.1004-1699.2017.05.013
基于胶囊内窥镜图像的肠胃道三维重建技术
3D Recovery of Gastrointestinal Tract Based on Capsule Endoscopic Images
摘要
Abstract
In order to improve the accuracy and authenticity for the capsule endoscopic examination,we present the 3D recovery technique for gastrointestinal tract based on the sequential endoscopic images. First,the corresponding feature points are extracted from the two sequential images by SIFT method,and their 2D coordinates on the imaging plane are acquired. Then the position and orientation shifts are calculated by the 8-point algorithm, which are related to the rotation matrix and transition vector. Further,the 3D relative and global coordinates are computed for all the feature points. Finally,the 3D feature points are gridded by Delaunay triangular subdivision algorithm and the 3D recovery is realized for the real scene. The experimental results show that the depth error is smaller than 1mm in case that the distance is 100 mm from camera to the tested point, and smaller than 3 mm the distance 250 mm. These results validate the feasibility of the proposed method.关键词
胶囊内窥镜/三维重建/胃肠道图像/8点位姿算法Key words
capsule endoscopy/3D recovery/gastrointestinal tract images/8-point algorithm分类
信息技术与安全科学引用本文复制引用
胡超,蔡振宇,尤晓赫,张智焕..基于胶囊内窥镜图像的肠胃道三维重建技术[J].传感技术学报,2017,30(5):708-714,7.基金项目
国家自然科学基金项目( 61273332) （ 61273332）
与宁波市科技项目(创新团队) （创新团队）
计划项目( 2014B82015) （ 2014B82015）
