Abstract
Wireless capsule endoscopy (WCE) is a newly booming technology on gastrointestinal (GI) examinations. After the patient swallows the capsule, it starts taking video of the entire interior of the digestive tract, from the esophagus, stomach to small intestine, and colon. It transmits sequences of color images back to the computer, and hence allows the doctors to observe the patient’s GI tract vividly and hence diagnose precisely based on the visually accessed video instead of reconstructed images such as MRI. The entire process takes hours with around 50,000 images about the inside of the GI tract. It is very time-consuming to go through those images frame by frame. Therefore, many image/video processing techniques are adopted to develop software which is expected to annotate the images in different stage of the GI tract and detect unusual events, such as bleeding, polyps, and ulcers, automatically. In another words, the problems in WCE images/videos can be categorized in two classes, video segmentations and event detections. Various methods have been discussed in the literatures and generally can be seen as two-stage approaches, describing images and classifying images or regions. In this chapter, we will review various feature descriptors and classification methods that are often used on WCE images/videos.
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Acknowledgments
Partial support for this work was provided by the National Science Foundation’s Course, Curriculum, and Laboratory Improvement (CCLI) program under Award No. 0837584. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.
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Yang, G., Yin, Y., Man, H. (2013). Biomedical Image Analysis on Wireless Capsule Endoscopy Images and Videos. In: Guo, Y. (eds) Selected Topics in Micro/Nano-robotics for Biomedical Applications. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-8411-1_3
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