DocumentCode :
13290
Title :
A Lumen Detection-Based Intestinal Direction Vector Acquisition Method for Wireless Endoscopy Systems
Author :
Dan Wang ; Xiang Xie ; Guolin Li ; Zheng Yin ; Zhihua Wang
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Volume :
62
Issue :
3
fYear :
2015
fDate :
Mar-15
Firstpage :
807
Lastpage :
819
Abstract :
This paper proposes a novel method for acquiring an intestinal direction vector (IDV) based on a single static wireless endoscopic image. The IDV can be used for navigation of wireless capsule endoscopy, and for multicamera microball system, this information can help to select cameras to capture images of the region of interest. Our proposal is based on lumen detection, which involves Bayer-format downsample, adaptive threshold segmentation, and radial texture detection. Then, an IDV calculation method with only one single static image by modeling the small intestine and image capture process is put forward. The performance of the proposed method is verified with experiments based on real digestive tract images and the microball demo system. The lumen detection method achieves 95.5% precision and 98.1% sensitivity. The experimental results in pig intestine show that the error of IDV is limited by a sphere with center (-0.00629, 0.00097, 0.00061) and radius 0.085.
Keywords :
biomedical optical imaging; endoscopes; image capture; image segmentation; image texture; medical image processing; Bayer-format downsample; IDV calculation method; adaptive threshold segmentation; digestive tract image; image capture process; intestinal direction vector acquisition method; lumen detection; multicamera microball system; radial texture detection; single static wireless endoscopic image; small intestine; wireless capsule endoscopy; wireless endoscopy systems; Cameras; Endoscopes; Feature extraction; Image segmentation; Intestines; Mathematical model; Vectors; Intestinal direction vector (IDV) acquisition; Intestinal direction vector acquisition; lumen detection;
fLanguage :
English
Journal_Title :
Biomedical Engineering, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9294
Type :
jour
DOI :
10.1109/TBME.2014.2365016
Filename :
6936917
Link To Document :
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