题目/Title：Research on 2D Representation Method of Wireless Micro-Ball Endoscopic Images

作者/Author：王丹,谢翔,李国林,谷荧柯,尹征,王志华
                        Dan Wang,Xiang Xie,Guolin Li,Yingke Gu,Zheng Yin,Zhihua Wang

会议/Conference：EMBC 2012

地点/Location：San Diego, CA

年份/Issue Date：2012.28 Aug.-1 Sept.

页码/pages：pp. 1145 - 1148

摘要/Abstract：
Nowadays the interpretation of the images acquired by wireless endoscopy system is a tedious job for doctors. A viable solution is to construct a map, which is the 2D representation of gastrointestinal (GI) tract to reduce the redundancy of images and improve the understandability of them. The work reported in this paper addresses the problem of the 2D representation of GI tract based on a new wireless Micro-Ball endoscopy system with multiple image sensors. This paper firstly models the problem of constructing the map, and then discusses mainly on the issues of perspective distortion correction, image preprocessing and image registration, which lie in the whole problem. The perspective distortion correction algorithm is realized based on attitude angles, while the image registration is based on phase correlation method (PCM) and scale invariant feature transform (SIFT) combined with particular image preprocessing methods. Based on R channels of images, the algorithm can deal with 26.3% to 100% of image registration when the ratio of overlap varies from 25% to 80%. The performance and effectiveness of the algorithms are verified by experiments.