Computer aided wireless capsule endoscopy video segmentation

	Computer aided wireless capsule endoscopy video segmentation
	Li Baopu; Xu Guoqing; Zhou Ran; Wang Tianfu
刊名	Medical Physics
	2015
英文摘要	Wireless capsule endoscopy (WCE) opens a new door for the digestive tract examination and diagnosis. However, the examination of its video data is tedious. This study aims to assist a physician to interpret a WCE video by segmenting it into different anatomic parts in the digestive tract.A two level WCE video segmentation scheme is proposed to locate the boundary between the stomach, small intestine, and large intestine. In the rough level, the authors utilize color feature to draw a dissimilarity curve for a WCE video and obtain an approximate boundary. Meanwhile, training data for the fine level segmentation can be collected automatically between the two approximate boundaries of organs to overcome the difficulty of training data collection in traditional approaches. In the fine level, color histogram in the HSI color space is used to segment the stomach and small intestine. Then, color uniform local binary pattern (CULBP) algorithm is applied for discrimination of the small intestine and large intestine, which includes two patterns, namely, color norm and color angle pattern. The CULBP feature is robust to variation of illumination and discriminative for classification. In order to increase the performance of support vector machine, the authors integrate it with the Adaboost approach. Finally, the authors refine the classification results to segment a WCE video into different parts, that is, the stomach, small intestine, and large intestine.The average precision and recall are 91.2% and 90.6% for the stomach/small intestine classification, 89.2% and 88.7% for the small/large intestine discrimination. Paired t-test also demonstrates a significant better performance of the proposed scheme compared to some traditional methods. The average segmentation error is 8 frames for the stomach/small intestine discrimination, and 14 frames for the small/large intestine segmentation. The results have demonstrated that the new video segmentation method can accurately locate the boundary between different organ regions in a WCE video. Such a segmentation result may enhance the efficiency of WCE examination.
收录类别	SCI
原文出处	http://www.ncbi.nlm.nih.gov/pubmed/25771558
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/6600]
专题	深圳先进技术研究院_集成所
作者单位	Medical Physics
推荐引用方式 GB/T 7714	Li Baopu,Xu Guoqing,Zhou Ran,et al. Computer aided wireless capsule endoscopy video segmentation[J]. Medical Physics,2015.
APA	Li Baopu,Xu Guoqing,Zhou Ran,&Wang Tianfu.(2015).Computer aided wireless capsule endoscopy video segmentation.Medical Physics.
MLA	Li Baopu,et al."Computer aided wireless capsule endoscopy video segmentation".Medical Physics (2015).